A kind of articulated chassis of a pack-back vehicle

Abstract

The present invention discloses a joint chassis of a piggyback vehicle, the joint chassis comprises a joint chassis section, the joint chassis section comprises a joint chassis body, a joint connection mechanism fixed at the rear end of the joint chassis body, and a joint fixed at the front end of the joint chassis; the joint connection mechanism comprises: a joint connection hook, the hook mouth of the joint connection hook faces upward, the inner hook surface of the joint connection hook is provided with a joint groove extending in the transverse direction, and the joint groove is used to place and support the lower circular shaft of the piggyback vehicle support part upward. In addition, the joint connection mechanism also comprises a joint longitudinal support member for supporting the support part in the longitudinal direction, and a joint transverse limit member for limiting the transverse position of the support part. In addition, the joint chassis also comprises a locking mechanism capable of limiting the vertical position of the support part and a transverse stop mechanism capable of assisting the support part in accurately resetting. The joint chassis can be reliably connected to the support part and can be conveniently separated from the support part.

Description

Technical Field

[0001] The invention relates to the technical field of piggyback transportation, in particular to a joint chassis of a piggyback vehicle. Background Art

[0002] Piggyback transport refers to a convenient mode of transport in which a road vehicle such as a road truck or semi-trailer is loaded with goods and driven onto the piggyback vehicle at the departure railway station, and the goods are transported over long distances by rail. After arriving at the destination railway station, the road vehicle can drive off the piggyback vehicle and drive to the final destination.

[0003] The body of a packback vehicle generally includes a main body and a detachable support portion. When loading and unloading, the support portion can be separated from the main body to facilitate the on and off of road vehicles. After loading and unloading, the support portion can be installed on the main body. The connection reliability between the main body and the support portion of the existing packback vehicle is not high and is not easy to separate.

[0004] Therefore, improving the connection reliability and separation convenience of the main body and the support part of the saddlebag is a technical problem that needs to be solved by those skilled in the art. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a joint frame of a piggyback, wherein the joint frame includes a joint frame section, wherein the joint frame section includes a joint frame body, a joint connecting mechanism fixed at the rear end of the joint frame body, and a joint fixed at the front end of the joint frame body; the joint is connected to the joint of another joint frame section through a joint bearing, and in the connected state, the two joint frame sections can rotate laterally and vertically; the hook mouth of the joint connecting hook faces upward, and the inner hook surface of the joint connecting hook is provided with a joint groove extending laterally, and the joint groove is used to place and upwardly support the lower circular shaft of the piggyback support part.

[0006] When the lower round shaft of the support is placed in the end groove, it is supported by the upward support force from the inner surface of the end groove, so that it is effectively supported vertically. At the same time, the inner surface of the end groove can also play a certain longitudinal limiting role on the lower round shaft. Therefore, the joint chassis and the support have good connection reliability. Moreover, by applying an upward lifting force to the support, the lower round shaft can be disengaged from the end groove, which facilitates the separation of the joint chassis and the support. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1A A structural diagram of a specific implementation of the joint chassis provided by the present invention;

[0008] Figure 2A for Figure 1A A side view of the structure mounted on the bogie and connected to the bracket;

[0009] Figure 3A This is a structural diagram of the support part;

[0010] Figure 4A for Figure 1A A structural diagram of a joint chassis subdivision;

[0011] Figure 5A for Figure 4A Another perspective of the picture;

[0012] Fig. 6A for Figure 1A A structural diagram of another joint chassis subdivision;

[0013] Fig. 7A for Figure 4A Exploded view of;

[0014] Fig. 8A for Fig. 7A Enlarged view of the longitudinal support of the mid-joint;

[0015] Fig. 9A for Fig. 7A An enlarged view of the lateral stopper of the middle joint;

[0016] Fig. 10A for Fig. 7A A magnified view of the first component;

[0017] Fig.11A for Fig. 7A Enlarged view of the second joint beam and the third joint beam;

[0018] Fig. 12A for Fig. 7A An enlarged view of a side bearing of a joint;

[0019] Fig.13A for Fig. 7A An enlarged view of a set of reinforcement plates;

[0020] Figure 1B This is a structural diagram of the first locking mechanism installed on the end connecting hook;

[0021] Figure 2B It is a structural diagram of the end connecting hook, the support part and the first locking mechanism in a locked state;

[0022] Figure 3B for Figure 2B Side view of

[0023] Figure 4B for Figure 2B Side view in unlocked state;

[0024] Figure 5B It is a structural diagram of the connection between the lock body and the locking drive beam assembly;

[0025] Figure 6B for Figure 5B Exploded view of;

[0026] Figure 7B A structural diagram showing the first limiting portion, the second limiting portion and the guide sleeve being fixed to the end connecting hook;

[0027] Figure 1C This is a structural diagram of the second locking mechanism installed on the end connecting hook;

[0028] Figure 2C It is a structural diagram of the end connecting hook, the support part and the second locking mechanism in the locked state;

[0029] Figure 3C It is a structural diagram of the end connecting hook, the support part and the second locking mechanism in the unlocked state;

[0030] Figure 4C A structural diagram showing the guide sleeve, the second limiting portion, and the rotating support body being fixed to the end connecting hook;

[0031] Figure 5C It is the connection structure diagram of the push beam, the connecting beam unit and the lock body;

[0032] Figure 6C It is a structural schematic diagram of the connecting sleeve;

[0033] Figure 7C It is a structural diagram of the transfer block;

[0034] Figure 8C It is a schematic diagram of the structure of the lock;

[0035] Fig. 9C It is a structural schematic diagram of the lock body;

[0036] Fig. 10C It is a schematic diagram of the structure of the rotating support body.

[0037] Figure 1D This is a structural diagram of the first transverse stop mechanism installed on the end connecting hook;

[0038] Figure 2D It is a structural diagram of a specific implementation method of the first transverse stop mechanism;

[0039] Figure 3D for Figure 2D Exploded view of;

[0040] Figure 4D is a structural schematic diagram of the support;

[0041] Figure 5D This is the split structure diagram of the first coupling beam;

[0042] Fig.6D It is a structural diagram of another specific implementation of the first transverse stop mechanism;

[0043] Fig.7D for Fig.6D An exploded view of the connection structure between the stop beam and the connecting part.

[0044] Figure 1E A diagram showing the relative positions of the second transverse stop mechanism, the end connecting hook and the support portion in the stop state;

[0045] Figure 2E for Figure 1E A partial enlarged view of the part within the middle circle;

[0046] Figure 3E A diagram showing the relative positions of the second transverse stop mechanism, the end connecting hook and the support portion in the unlocked state;

[0047] Figure 4E for Figure 3E A partial enlarged view of the part within the middle circle;

[0048] Figure 5E This is a structural diagram of the second transverse stop mechanism installed on the end connecting hook;

[0049] Fig. 6E for Figure 5E Exploded view of the .

[0050] The following are the descriptions of the reference numerals:

[0051] 1 body part;

[0052] 3 joint chassis, 3a joint chassis division, 31 joint chassis body, 3101 first joint cross beam, 3102 second joint cross beam, 3103 third joint cross beam, 3104 first joint longitudinal beam, 3105 second joint longitudinal beam, 3106 joint traction beam, 3107 first joint floor, 3108 second joint floor, 3109 joint side bearing, 3110 reinforcement plate, 32 joint connection mechanism, 321 end connection hook, 321a end groove, 321b joint hook body, 321b-1 joint hook split, 321b-2 joint accommodating cavity, 321c joint hook wall plate, 321d joint first connection hole, 321e joint second connection hole, 322 end longitudinal support, 322a end longitudinal support body, 322b Joint wear plate, 323 end lateral limit piece, 323a joint lateral limit groove, 323b left guide surface, 323c right guide surface, 33 joint, 34 joint bearing.

[0053] 4 supporting part, 412c lower round shaft, 421 upper hook, 422 guide limiter.

[0054] 5 locking mechanism, 51 lock body, 511 locking end, 512 first limiting end, 513 mounting groove, 514 second limiting end, 52 hinge shaft, 521 locking mounting plate, 522 bolt, 53 first limiting part, 54 locking drive beam assembly, 541 push beam, 541a connecting sleeve, 541b locking elastic member, 541c supporting member, 542 guide sleeve, 543 transmission beam, 55 second limiting part.

[0055] 5′ locking mechanism, 51′ locking head, 511′ locking part, 512′ supporting part, 513′ arc-shaped notch, 514′ supporting groove, 52′ lock body, 521′ insertion section, 522′ sliding groove, 523′ large-size supporting section, 524′ small-size supporting section, 53′ locking drive beam assembly, 531′ pushing beam, 531a′ connecting sleeve, 531b′ first elastic member, 531c′ supporting member, 532′ guide sleeve, 533′ connecting beam unit, 533a′ first locking connecting beam, 533b′ second locking connecting beam, 533c′ adapter block, 533c-1′ fixed hinge point, 533c-2′ first hinge point, 533c-3′ second hinge point, 54′ rotating support body, 541′ rotating shaft, 542′ first limiting part, 543′ sliding rail, 55′ second limiting part.

[0056] 6 transverse stop mechanism, 61 support, 611 through hole, 612 mounting hole, 613 connecting plate, 614 guard plate, 615 upper cover plate, 62 stop beam, 621 thick neck, 622 thin neck, 623 step surface, 624 first anti-loosening member, 63 stop driving beam assembly, 631 first connecting beam, 6311 driving end, 6312 connecting end, 631a long plate, 631a-1 strip guide hole, 631b short plate, 631b-1 through hole, 631c roller, 631d roller, 631d-1 rod, 631d-2 head, 631d-3 locking nut, 631e strip guide groove, 631f locking member, 631g gasket, 632 second connecting beam, 633 first hinge shaft, 633a mounting plate, 634 second hinge shaft, 64 stop elastic member, 65 limiting member.

[0057] 6' transverse stop mechanism, 61' stop beam, 611' driving end, 612' stop end, 613' hinge shaft, 613a' large diameter section, 613b' small diameter section, 613c' third limiter, 613d' gasket, 62' limit beam, 63' first limiter, 64' second limiter, 65' stop elastic member. DETAILED DESCRIPTION

[0058] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0059] First of all, it should be noted that in the description of the present invention, the length direction of the sled vehicle is the front-to-back direction. "Front" can be the side where the front of the vehicle is located, or it can be the side where the rear of the vehicle is located; when facing forward, the left-hand side is "left" and the top of the head is "up". In addition, in the description of the present invention, "longitudinal" is roughly the front-to-back direction, "lateral" is roughly the left-right direction, and "vertical" is roughly the up-down direction. In the horizontal direction, the position relatively close to the lateral center of the railway track is the inside, and the position relatively far from the lateral center of the railway track is the outside. In addition, in the description of the present invention, "first", "second", "third" and other similar reference words are only for the convenience of distinguishing the description, and cannot be understood as indicating or implying relative importance or representing a sequential relationship.

[0060] As described in the background technology, the body of a saddlebag usually includes a main body and a support 4. The joint chassis 3 provided by the present invention is a part of the main body. During transportation, the support 4 is connected to the joint chassis 3, so it is necessary to ensure that the support 4 and the joint chassis 3 are reliably connected. During loading and unloading, the support 4 is separated from the joint chassis 3, so it is also necessary to ensure that the support 4 and the joint chassis 3 are easy to separate. The joint chassis 3 designed by the present invention can be reliably connected to the support 4 and can be easily separated from the support 4.

[0061] like Figure 1A As shown, the joint chassis 3 includes two joint chassis divisions 3a. The joint chassis division 3a includes a joint chassis body 31, a joint connecting mechanism 32 and a joint 33. The joint connecting mechanism 32 is fixed at the rear end of the joint chassis body 31, and the joint 33 is fixed at the front end of the joint chassis body 31. It should be noted that the ends of the two joint chassis divisions 3a that are close to each other are the front ends of the two joint chassis divisions, and the ends that are away from each other are the rear ends of the two joint chassis divisions. When in use, the joints 33 of the two joint chassis divisions 3a are connected by joint bearings. In the connected state, the two joint chassis divisions 3a can rotate laterally and vertically to meet the flexibility requirements of the vehicle when turning and walking on a ramp.

[0062] like Figure 2A As shown, when used, each joint frame section 3a is connected to a support portion 4, so that two adjacent support portions 4 are connected through the joint frame 3, and a bogie is provided under the two joint frame sections 3a, that is, two joint frame sections 3a (one joint frame 3) are correspondingly installed on a bogie.

[0063] like Figure 4A and Fig. 6A As shown, the structures of the joints 33 of the two joint chassis divisions 3a are different. The joint 33 of one joint chassis division 3a is set as a concave joint, and the joint of the other joint chassis division 3a is set as a convex joint. In the connected state, the convex joint extends into the concave joint to achieve a rotatable connection.

[0064] The joint connection mechanisms 32 of the two joint chassis divisions 3a have the same structure, and the joint chassis bodies 31 also have the same structure. In the connected state, the joint connection structures 32 of the two are relatively laterally symmetrical, and the joint chassis bodies 31 of the two are also relatively laterally symmetrical. The specific structure of the joint connection mechanism 32 is first described below, and then the specific structure of the joint chassis body 31 is described.

[0065] Joint connection mechanism 32

[0066] like Figure 4A As shown, the joint connection mechanism 32 includes a joint connection hook 321. The hook mouth of the joint connection hook 321 faces upward, and a joint groove 321a extending in the transverse direction is provided on the inner hook surface of the joint connection hook 321.

[0067] like Figure 3A As shown, a lower circular shaft 412c is provided at the lower side of the end of the support portion 4.

[0068] like Figure 2A As shown, in the connected state, the lower circular shaft 412c of the support part 4 is placed in the joint groove 321a, and is supported by the upward support force from the inner surface of the joint groove 321a, so that the vertical direction is effectively supported. At the same time, the inner surface of the joint groove 321a can also play a certain longitudinal limiting role on the lower circular shaft 412c. Therefore, the joint chassis 3 and the support part 4 have good connection reliability. Moreover, by applying an upward lifting force to the support part 4, the lower circular shaft 412c can be disengaged from the joint groove 321a, which facilitates the separation of the joint chassis 3 and the support part 4.

[0069] Further, such as Figure 4A As shown, the joint connection mechanism 32 further includes a joint longitudinal support member 322 , and the joint longitudinal support member 322 is located above the joint connection hook 321 , specifically, it can be directly above or obliquely above.

[0070] like Fig. 8A As shown, the joint longitudinal support member 322 includes a joint longitudinal support body 322a and joint wear plates 322b fixed to the front and rear ends of the joint longitudinal support body 322a.

[0071] like Figure 3A As shown, an upper hook 421 is provided on the upper side of the end of the support portion 4, and the hook mouth of the upper hook 421 faces downward.

[0072] like Figure 2AAs shown, in the connected state, the end longitudinal support body 322a extends into the hook opening of the upper hook 421, and the two are hooked together. At the same time, the joint wear plate 322b at the front end abuts against the front side of the inner hook surface of the upper hook 421, and the joint wear plate 322b at the rear end abuts against the rear side of the inner hook surface of the upper hook 421, thereby playing a longitudinal supporting role for the support part 4. In this way, the connection reliability between the joint base frame 3 and the support part 4 can be further improved, and the convenience of separating the joint base frame 3 and the support part 4 will not be affected.

[0073] like Fig. 8A As shown, the upper part of the joint wear plate 322b at the front end is tilted backward relative to the lower part, and the upper part of the joint wear plate 322b at the rear end is tilted forward relative to the lower part. At the same time, the inner surface of the joint groove 321a forms a joint guide surface, which can guide the joint chassis section 3a to rotate horizontally when cooperating with the lower circular shaft 412c. With such an arrangement, when the support part 4 and the joint chassis 3 are connected, as the support part 4 gradually falls, the clamping degree between the joint longitudinal support body 322a and the upper hook 421 gradually increases, so that it is convenient for the upper hook 421 to firmly hook the joint longitudinal support body 322a; when the support part 4 and the joint chassis 3 are separated, an upward lifting force is applied to the position of the joint chassis 3 close to the rear end ( Figure 2A When the lifting force F is applied, the joint chassis 3 is lifted to a certain height, and the joint chassis 3 is guided by the inner surface of the joint groove 321a and rotates horizontally around the lifting force position as the fulcrum ( Figure 2A The joint longitudinal support body 322a is moved in the direction of the middle arrow, so that the clamping degree between the joint longitudinal support body 322a and the upper hook 421 is gradually weakened, and the lower round shaft 412c is gradually slid out of the joint groove 321a, thereby facilitating the separation of the joint chassis 3 and the support 4. In short, such a configuration can improve the connection reliability and separation convenience of the joint chassis 3 and the support 4.

[0074] In the illustrated embodiment, the top of the joint longitudinal support body 322a is a trapezoidal structure with a small top and a large bottom (see Fig. 8A ), the height position of the joint wear plate 322b at the rear end is lower than the height position of the joint wear plate 322b at the front end, so that the joint chassis section 3a can smoothly produce the above-mentioned lateral rotation without interference. Of course, the structure for avoiding interference is not limited to this, and can be reasonably adjusted in actual implementation. Fig. 8A In the embodiment, the joint wear plate 322b is connected to the joint longitudinal support body 322a by bolts and nuts. The joint longitudinal support body 322a is a hollow structure with an oblong hole at the bottom, so that the joint wear plate 322b can be easily replaced.

[0075] In the illustrated embodiment, the joint groove 321a is a cylindrical groove (see Figure 4A), so that its inner surface can play the above-mentioned guiding role when cooperating with the cylindrical lower round shaft 412c. Of course, in actual implementation, the joint groove 321a is not limited to a cylindrical groove.

[0076] Further, such as Figure 4A As shown, the joint connection mechanism 32 also includes a joint transverse limiter 323, which is located above the joint connection hook 321, specifically directly above or obliquely above, and the joint transverse limiter 323 is located in front of the joint longitudinal support member 322, specifically directly in front or obliquely in front.

[0077] like Fig. 9A As shown, the joint transverse limiting member 323 includes a joint transverse limiting groove 323a.

[0078] like Figure 3A As shown, a guide limiter 422 is provided at the end of the support portion 4 .

[0079] like Figure 2A As shown, in the connected state, the guide limiter 422 is inserted into the joint transverse limiter groove 323a, and the left groove wall and the right groove wall of the joint transverse limiter groove 323a are respectively located on the left and right sides of the guide limiter 422 to limit the transverse position of the guide limiter 422. In this way, the connection reliability between the joint chassis 3 and the support part 4 can be further improved.

[0080] In the illustrated embodiment, the upper part of the left groove wall and the upper part of the right groove wall of the joint transverse limiting groove 323a respectively form a left guide surface 323b and a right guide surface 323c (see Fig. 9A ), the upper side of the left guide surface 323b is inclined to the left relative to the lower side, and the upper side of the right guide surface 323c is inclined to the right relative to the lower side, so that the guide limit member 422 can be guided into the joint transverse limit groove 323a.

[0081] Fig. 9A In the embodiment, the joint transverse limiter 323 is composed of a U-shaped plate and two rib plates. In actual implementation, the structure of the joint transverse limiter 323 is not limited to this.

[0082] Joint chassis body 31

[0083] like Figure 4A and Figure 5A As shown, the joint chassis body 31 includes a first joint cross beam 3101 , a second joint cross beam 3102 , a third joint cross beam 3103 , a first joint longitudinal beam 3104 , a second joint longitudinal beam 3105 , a joint traction beam 3106 , a first joint floor 3107 , and a second joint floor 3108 .

[0084] The first joint cross beam 3101 is arranged behind the second joint cross beam 3102 and the third joint cross beam 3103, the left end of the first joint cross beam 3101 is fixed to the left end of the second joint cross beam 3102 through the first joint longitudinal beam 3104, the right end of the first joint cross beam 3101 is fixed to the right end of the third joint cross beam 3103 through the second joint longitudinal beam 3105, the right end of the second joint cross beam 3102 and the left end of the third joint cross beam 3103 are respectively fixed to the front end of the joint traction beam 3106, so as to form a joint frame; the rear end of the joint traction beam 3106 is fixed to the first joint cross beam 3101; the fixing method between the beams can be welding. The joint 33 is fixed to the front end of the joint traction beam 3106, which can be specifically fixed by welding.

[0085] The first joint floor 3107 and the second joint floor 3108 cover the top frame of the joint frame and are respectively located on the left and right sides of the joint traction beam 3106. The first joint floor 3107 is fixed to the second joint cross beam 3102, the first joint longitudinal beam 3104 and the joint traction beam 3106. The second joint floor 3108 is fixed to the third joint cross beam 3103, the second joint longitudinal beam 3105 and the joint traction beam 3106, and can be specifically fixed by welding.

[0086] like Fig. 10A As shown, the first joint beam 3101 and the joint connecting hook 321 form a first component. In the figure, two joint connecting hooks 321 are provided, one is fixed to the lower side of the left end of the first joint beam 3101, and the other is fixed to the lower side of the right end of the first joint beam 3101. In conjunction with Figure 4A, two joint longitudinal support members 322 are also provided, one is fixed to the rear side of the left end of the first joint beam 3101, and the other is fixed to the rear side of the right end of the first joint beam 3101; two joint transverse limit members 323 are also provided, one is fixed to the upper side of the left end of the first joint beam 3101, and the other is fixed to the upper side of the right end of the first joint beam 3101.

[0087] In a specific solution, the second joint cross beam 3102 and the third joint cross beam 3103 have the same structure, both including a bottom plate, a double web plate and a partition plate arranged between the double web plates (see Fig.11A The first joint longitudinal beam 3104 and the second joint longitudinal beam 3105 have the same structure, both of which are grooved beams with the notches facing upwards (see Fig. 7A The first joint floor 3107 and the second joint floor 3108 have the same structure, both of which are plate structures with a hole in the center. The joint traction beam 3106 includes a traction upper cover plate and a traction lower cover plate and a traction vertical plate arranged therebetween.

[0088] Further, such as Figure 4AAs shown, the joint chassis body also includes two joint side bearings 3109, which are respectively located on the left and right sides of the joint 33, one joint side bearing 3109 is fixed to the front side of the second joint cross beam 3102, and the other joint side bearing 3109 is fixed to the front side of the third joint cross beam 3103. In a specific solution, the structures of the two joint side bearings 3109 are the same. Fig. 12A As shown, the joint side bearing includes a side bearing lower cover plate, a side bearing upper cover plate and a side bearing vertical plate arranged therebetween.

[0089] Further, such as Figure 4A As shown, the joint chassis body 31 also includes a reinforcement plate 3110. In the specific solution, two sets of reinforcement plates 3110 are provided (see Fig. 7A ), one group of reinforcing plates 3110 is fixed between the first joint floor 3107 and the first joint cross beam 3101, and another group of reinforcing plates is fixed between the second joint floor 3108 and the first joint cross beam 3101. Fig.13A As shown, each group of reinforcement components 3110 includes a transverse rib plate and two triangular rib plates.

[0090] Furthermore, the joint chassis section 3a also includes a locking mechanism, such as Fig. 10A As shown, the joint connection hook 321 includes a joint hook body 321b, and the joint hook body 321b includes two joint hook parts 321b-1 arranged in a lateral interval and a joint accommodating cavity 321b-2 formed between the two joint hook parts 321b-1, and the joint accommodating cavity 321b-2 is used to install a locking mechanism. By setting a locking mechanism, the risk of the joint chassis 3 and the support part 4 being separated in the vertical direction when traveling to an undulating section during transportation can be avoided, and the connection reliability of the joint chassis 3 and the support part 4 can be further improved.

[0091] Fig. 10A In the figure, the joint connecting hook 321 also includes a joint hook wall plate 321c covered on the outer hook surface of the joint hook body 321b, and the joint hook wall plate 321c is provided with a joint first connecting hole 321d, and the joint first connecting hole 321d is communicated with the joint accommodating cavity 321b-2, so that the unlocking component can extend into the joint accommodating cavity 321b-2 through the joint first connecting hole 321d to unlock the locking mechanism. After unlocking, the support part 4 can be separated from the joint base frame 3.

[0092] The figure shows two locking mechanisms. Figure 1B-Figure 7B A first locking mechanism is shown, Figure 1C-Figure 10C A second locking mechanism is shown. Both are described below.

[0093] The first locking mechanism

[0094] like Figure 1B-7BAs shown, the locking mechanism 5 includes:

[0095] The lock body 51 is hinged to the joint connecting hook 321 through a hinge shaft 52 . One end of the lock body 51 is a locking end 511 , and the other end is a first limiting end 512 . The hinge shaft 52 is located between the locking end 511 and the first limiting end 512 .

[0096] The first limiting portion 53 is fixed in the joint accommodation cavity 321b-2 (see Figure 7B );

[0097] A lock driving beam assembly 54 connected to the lock body 51;

[0098] In the locked state, Figure 3B As shown, the first limiting end portion 512 abuts against the first limiting portion 53 from top to bottom, and the locking end portion 511 abuts against the supporting portion 4 to lock the supporting portion 4; in the unlocked state, as shown Figure 4B As shown, the locking driving beam assembly 54 can drive the first limiting end portion 512 to separate from the first limiting portion 53 from bottom to top, and the locking end portion 511 to rotate and separate from the supporting portion 4.

[0099] Using this structure, Figure 3B , Figure 4B As shown, when locking, if there is a separation tendency between the support portion 4 and the joint connecting hook 321, the support portion 4 will generate an upward force on the locking end portion 511 to drive the locking end portion 511 to rotate counterclockwise, and the bottom-up supporting force generated by the first limiting portion 53 on the first limiting end portion 512 can block the rotation of the lock body 51 in the counterclockwise direction, thereby ensuring that the position of the locking end portion 511 remains unchanged, and the support portion 4 can be reliably locked; when unlocking, the locking drive beam assembly 54 can drive the first limiting end portion 512 to separate from the first limiting portion 53 from bottom to top, and the lock body 51 can rotate clockwise, and its rotation direction is opposite to the stop direction of the first limiting portion 53, and the locking end portion 511 and the support portion 4 can be separated smoothly, so that the support portion 4 can be smoothly unlocked without affecting the separation of the support portion 4 and the joint connecting hook 321.

[0100] Here, the embodiment of the present invention does not limit the structure of the first limiting portion 53, which may be plate-shaped or block-shaped; similarly, the embodiment of the present invention does not limit the number of the first limiting portions 53, which may be one or include multiple independent limiting members, as long as it can achieve the above-mentioned technical effects.

[0101] In a detailed scheme, Figure 5B As shown, the locking drive beam assembly 54 may include a push beam 541, a guide sleeve 542 and a transmission beam 543. The guide sleeve 542 is fixed in the joint accommodation cavity 321b-2 (see the attached Figure 7B ), the push beam 541 and the guide sleeve 542 can be slidably connected, one end of the transmission beam 543 can be hinged to the lock body 51, and the other end can be hinged to the push beam 541.

[0102] In this way, when the push beam 541 is driven to move upward, the hinged transmission beam 543 can convert the linear motion of the push beam 541 into the rotational motion of the lock body 51, so as to transmit the unlocking driving force to the lock body 51, thereby realizing the unlocking of the lock body 51; and when the driving force disappears, relying on its own gravity, etc., the push beam 541 can automatically slide down along the guide sleeve 542 and drive the lock body 51 to rotate in the opposite direction, so as to realize the automatic locking of the lock body 51. Of course, the reverse driving force can also be provided by an external device to drive the push beam 541 to reset and lock.

[0103] Specifically, the push beam 541 can be directly opposite to the first joint connection hole 321d (refer to Figure 3B and Figure 4B ), so that the unlocking component can pass through the joint first connection hole 321d and contact the push beam 541, thereby applying an upward unlocking driving force to the push beam 541.

[0104] It should be pointed out that the embodiment of the present invention does not limit the source of the driving force exerted on the push beam 541 when it is unlocked. It can adopt a manual driving solution. For example, an unlocking component such as an unlocking rod can be provided. When unlocking is required, the staff can manually operate the unlocking component to generate a driving force for the push beam 541. Alternatively, an automatic driving solution can be adopted. In this case, the power source can be a motor, a cylinder, an oil cylinder, etc. These power sources can be installed on the vehicle body or on ground equipment. The specific selection can be made according to actual conditions. A transmission mechanism can also be provided between the power source and the push beam 541 to transmit the driving force of the power source.

[0105] The beam section of the push beam 541 located above the guide sleeve 542 may also be provided with a connecting sleeve 541a. Figure 6B As shown, the connecting sleeve 541a can be specifically a U-shaped plate, the bottom plate portion of the U-shaped plate can be connected to the push beam 541, and can form a support with the guide sleeve 542 to serve as a limiting component for the downward movement of the push beam 541, and the transmission beam 543 can be hinged between the two side plate portions of the U-shaped plate.

[0106] In fact, the downward movement limit of the push beam 541 can also be achieved through the cooperation of the first limit end 512 and the first limit part 53. In this way, the above-mentioned connecting sleeve 541a may not exist; or, the transmission beam 543 can also be used for limiting. The transmission beam 543 and the push beam 541 adopt a hinged connection scheme. The two are usually set at an angle during actual working. The transmission beam 543 can also serve as a limit component for the downward movement of the push beam 541.

[0107] In the above scheme, the linear motion of the push beam 541 is converted into the rotational motion of the lock body 51 through the transmission beam 543. In fact, in addition to this scheme, other schemes can also be adopted. For example, a guide hole can be set on the lock body 51, and the push beam 541 can be hinged in the guide hole. When the push beam 541 produces axial displacement, the hinge shaft of the push beam 541 can slide in the guide hole to naturally drive the lock body 51 to rotate, which can also realize the conversion of linear motion into rotational motion.

[0108] Furthermore, the locking mechanism 5 may also include a locking elastic member 541b, one end of which may act on the push beam 541, and the unlocking process is a process in which the deformation of the locking elastic member 541b increases to gather elastic force. In this way, when the driving force acting on the push beam 541 disappears, the elastic force of the locking elastic member 541b may be released to cooperate with the gravity of the push beam 541 itself to jointly drive the lock body 51 to reset and lock.

[0109] Specifically, the locking elastic member 541b can be a spring, which can be installed in a sleeve on the push beam 541, and the lower end of the push beam 541 can be provided with a support member 541c, and the two ends of the spring can interact with the guide sleeve 542 and the support member 541c respectively. Among them, the push beam 541 can act as a spring column, which is conducive to preventing the radial movement of the spring during the expansion and contraction process, and has a positive effect on improving the stability of the structure and the reliability of power transmission; and with this structure, in the unlocked state, the push beam 541 can move upward, and the locking elastic member 541b can be compressed, and when restoring the lock, the push beam 541 can move downward, and the locking elastic member 541b can be released.

[0110] In fact, in the locked state, the locking elastic member 541b can also have a certain amount of pre-compression, that is, the locking elastic member 541b can still provide a certain elastic force when locked, which has a positive effect on ensuring the stability of the locked state of the lock body 51, and can avoid automatic unlocking of the lock body 51 when the rail vehicle passes through a curve.

[0111] To facilitate adjustment of the pre-compression amount, the support member 541c may be a nut, so that the spacing between the support member 541c and the guide sleeve 542 can be adjusted by changing the screwing position of the nut, thereby adjusting the pre-compression amount of the locking elastic member 541b in the locked state.

[0112] In the unlocked state, the locking elastic member 541b can actually be in a stretched state. At this time, the installation position of the locking elastic member 541b can change. Specifically, it can be set between the connecting sleeve 541a and the guide sleeve 542, and its two ends can be fixedly connected to the connecting sleeve 541a and the guide sleeve 542 to transmit the pulling force.

[0113] The lock body 51 may be provided with a mounting groove 513, and the transmission beam 543 may be hinged in the mounting groove 513. In this way, the thickness of the locking mechanism provided by the present invention in the axial direction of the hinge axis between the transmission beam 543 and the lock body 51 may be smaller, and the overall structure may be more compact. In addition, the mounting groove 513 may also be provided in the transmission beam 543, and then the lock body 51 may be hinged in the mounting groove 513 of the transmission beam 543; or, the mounting groove 513 may not be provided, in which case the thickness of the assembly formed by the transmission beam 543 and the lock body 51 in the axial direction of the hinge axis between the transmission beam 543 and the lock body 51 may be relatively larger.

[0114] Furthermore, the locking mechanism 5 may also include a fixedly arranged second limiting portion 55, which may be fixed in the joint accommodating cavity 321b-2, and its structure may be similar to that of the first limiting portion 53, and a repetitive description thereof is not made here; the lock body 51 may also include a second limiting end portion 514, and in the locked state, the second limiting end portion 514 may be against the second limiting portion 55 from bottom to top.

[0115] In this way, in the locked state, the lock body 51 can form a three-point support solution, the force on the lock body 51 is more balanced, and the lock body 51 locks the support part 4 more reliably.

[0116] In detail, the lock body 51 may include two locking arms set at an angle, and the two locking arms may roughly form an L-shape. The hinge shaft 52 may be set at the connection between the two locking arms, that is, at the corner of the L-shape, wherein the end of one locking arm away from the hinge shaft 52 may be a locking end 511, and the end of the other locking arm away from the hinge shaft 52 may be a first limiting end 512; a small angle (<180 degrees) and a large angle (>180 degrees) are formed between the two locking arms, wherein the side where the small angle is located is the inner end of the connection, and the side where the large angle is located is the outer end of the connection, and the outer end can serve as the above-mentioned second limiting end 514.

[0117] Combination Figure 3BIn the locked state, the first limiting portion 53 can generate a supporting force from bottom to top on the first limiting end 512, and the second limiting portion 55 can generate a supporting force from top to bottom on the second limiting end 514. Combined with the upward thrust generated by the supporting portion 4 on the locking end 511, the force on the lock body 51 can be more balanced; moreover, through the interaction of the three force points, the hinge shaft 52 is basically in a state of being free from force, which has a positive effect on ensuring the reliability of the locking mechanism.

[0118] The locking mechanism provided by the present invention can be installed on the joint connecting hook 321. In addition to the installation support points formed by the guide sleeve 542, the first limiting portion 53, and the second limiting portion 55, the hinge shaft 52 can also be used as an installation support point. Specifically, it can be combined with Figure 6B The outer wall of the hinge shaft 52 may be provided with a slot, in which a locking mounting plate 521 may be provided (the locking mounting plate 521 and the hinge shaft 52 may also be directly connected by welding), and the locking mounting plate 521 may be connected to the joint connecting hook 321 by a connecting member in the form of a bolt 522 or the like. Of course, in addition to the bolt connection, the locking mounting plate 521 and the joint connecting hook 321 may also be fixedly connected by welding or the like.

[0119] Second locking mechanism

[0120] When locked, the locking mechanism 5 ′ can lock the support part 4 and the joint connecting hook 321 in the vertical direction to ensure reliable connection between the two and driving safety. When unlocked, it does not affect the convenience of separating the support part 4 from the joint connecting hook 321.

[0121] like Figure 1C-10C As shown, the locking mechanism 5' comprises:

[0122] The lock head 51' is rotatably connected to the joint connecting hook 321, and the lock head 51' is provided with a locking portion 511' and a supporting portion 512' on both sides of the rotation center line thereof;

[0123] A lock body 52', the lock body 52' is slidably connected to the joint connecting hook 321;

[0124] The locking drive beam assembly 53′ is transmission-connected to the lock body 52′; in the locked state, the lock body 52′ is supported by the support portion 512′ from bottom to top, so that the locking portion 511′ presses the supporting portion; in the unlocked state, the locking drive beam assembly 53′ can drive the lock body 52′ to move in a direction away from the lock head 51′, and the supporting portion 512′ can rotate downward around the rotation center line, so that the locking portion 511′ rotates upward and disengages from the supporting portion.

[0125] With this structure, combined Figure 2CIn the locked state, if the support portion and the joint connecting hook 321 tend to separate, the support portion will generate an upward force on the locking portion 511' to drive the lock head 51' to rotate counterclockwise, and the support force generated from the bottom to the top by the lock body 52' on the supporting portion 512' can prevent the lock head 51' from rotating in the counterclockwise direction, thereby ensuring that the position of the locking portion 511' remains unchanged, and then the support portion can be reliably locked; Figure 3C When unlocking, the locking drive beam assembly 53' can drive the lock body 52' to slide in a direction away from the lock head 51', the support portion 512' can rotate downward around the rotation center line, and the locking portion 511' can rotate upward to release the lock on the support portion without affecting the separation of the support portion 4 and the joint connecting hook 321.

[0126] The rotation setting of the lock 51' can be specifically a hinge setting. In this case, a hinge shaft can be set for the lock 51', which can be fixed to the joint connection hook 321 and located between the locking portion 511' and the support portion 512'. Alternatively, a rotation support body 54' can be set, which can be fixed to the joint connection hook 321, and can be provided with a rotation shaft 541'. The rotation shaft 541' has an arc-shaped cylindrical surface, and the lock 51 can be provided with an arc-shaped notch 513' that matches the rotation shaft 541'. The matching here means that the outer diameter of the rotation shaft 541' is substantially consistent with the inner diameter of the arc-shaped notch 513'. During assembly, the lock 51' can be inserted into the rotation shaft 541' through the arc-shaped notch 513', and can be rotated with the central axis of the rotation shaft 541' as the rotation center line, so that the rotation setting of the lock 51' can also be realized.

[0127] When unlocking, the rotation of the lock head 51' can be achieved by the offset of the center of gravity. The center of gravity of the lock head 51' can be deviated from the rotation center line in the longitudinal direction and located on the side where the support portion 512' is located. Specifically, it can be referred to Figure 2C The arc-shaped notch 513' can be arranged on the right side of the center of gravity of the lock head 51', so that when the lock body 52' moves to the left, the lock head 51' can naturally rotate counterclockwise to release the lock on the support portion.

[0128] And / or, a second elastic member in the form of a spring or the like may be provided for the lock head 51'. In the locked state, the second elastic member may gather elastic force in the form of a tensile force / compressive force or the like. When the lock body 52' gradually moves away, the elastic force of the second elastic member may be released to drive the lock head 51' to automatically rotate and unlock. In comparison, both of the above-mentioned methods can realize the automatic rotation of the lock head 51' when unlocking. In specific implementation, those skilled in the art may select one according to actual needs.

[0129] Combination Figure 4CDuring the specific assembly, the number of the rotating support bodies 54′ can be two, so that the lock head 51′ can be mounted on two rotating support bodies 54′, the installation stability of the lock head 51′ is higher, and the space between the two rotating support bodies 54′ can be used to insert the lock body 52′, and the connection structure of the lock head 51′, the lock body 52′ and the rotating support body 54′ can also be more compact.

[0130] For example Fig. 10C As shown, the rotating support body 54′ may further include a first limiting portion 542′, which may be an angled shape, etc. In the unlocked state, the first limiting portion 542′ may abut against the support portion 512′ to limit the downward rotation of the support portion 512′, and at the same time, may also support a gap for the lock body 52′ to be inserted from below the support portion 512′, so as to facilitate the reinsertion of the lock body 52′, thereby supporting the support portion 512′.

[0131] Here, the embodiment of the present invention does not limit the supporting height of the first limiting portion 542′. During specific implementation, those skilled in the art can set it according to actual needs, as long as it is ensured that when the first limiting portion 542′ and the supporting portion 512′ are supported, the locking portion 511′ can unlock the supporting portion and at the same time reserve an insertion gap for the lock body 52′.

[0132] Furthermore, if Figure 8C As shown, a support groove 514' may also be provided on the lock head 51', and when unlocking, the aforementioned first limit portion 542' may be inserted into the support groove 514'. It can be understood that the depth of the first limit portion 542' inserted into the support groove 514' actually determines the support height of the support portion 512' when unlocking. Therefore, in specific practice, the support height of the support portion 512' may also be adjusted by adjusting the depth of the support groove 514'.

[0133] Combination Fig. 9C The lock body 52′ may include an insertion section 521′ having an inclined guide surface. When locking, the insertion section 521′ may be inserted from below the support portion 512′ and may be supported by the support portion 512′ with the inclined guide surface, so as to gradually drive the support portion 512′ to rotate upward and the locking portion 511′ to rotate downward, and lock the support portion.

[0134] The lock body 52′ may only include the insertion section 521′. Under this condition, when in a locked state, the lock body 52′ may still be supported by the tilted guide surface and the support portion 512′, and when in an unlocked state, the lock body 52′ may be completely separated from the support portion 512′, or the tilted guide surface may be supported by the support portion 512′. That is to say, when unlocking, the lock body 52′ and the lock head 51′ may not be completely separated. At this time, the lock body 52′ itself may also limit the rotation of the lock head 51′, and because the lock head 51′ is still on the lock body 52′, there is no problem that the lock body 52′ cannot be inserted, and the aforementioned first limiting portion 542′ may also not exist.

[0135] In the scheme of the accompanying drawings, Fig. 9C For reference, the lock body 52′ may include a three-part structure, namely a large-sized support segment 523′ with a larger vertical dimension, an insertion segment 521′ with a vertically variable dimension, and a small-sized support segment 524′ with a smaller vertical dimension. The large-sized support segment 523′ has a first support plane, and the small-sized support segment 524′ has a second support plane. In the locked state, the lock body 52′ can be supported by the support portion 512′ through the first support plane, and in the unlocked state, the lock body 52′ can be supported by the support portion 512′ through the second support plane.

[0136] Since the surface supporting the support portion 512′ is a plane, the stability of the lock head 51′ when unlocking and locking can be relatively high; and based on the above design, the support portion 512′ and the lock body 52′ are not completely separated when unlocking, and the small-sized support section 524′ will naturally form a rotation limit for the support portion 512′, and the aforementioned first limit portion 542′ may not exist.

[0137] As an attachment Fig. 9C As a variation of the solution, the lock body 52' may also only include a large-sized support segment 523' (or a small-sized support segment 524') and an insertion segment 521', which can also achieve the function of the lock body 52'.

[0138] A guide structure may be provided between the lock body 52 ′ and the rotating support body 54 ′ to guide the sliding direction of the lock body 52 ′.

[0139] Specifically, in the lock body 52' and the rotating support body 54', one may be provided with a slide groove 522', and the other may be provided with a sliding part matching the slide groove 522', and the sliding part may be inserted into the slide groove 522' and can slide along the slide groove 522'. The sliding part may be an integrated structure, such as the long strip slide rail 543' shown in the figure, or may be a split structure, for example, it may include a plurality of sliders arranged at intervals.

[0140] Furthermore, a fixed second limiting portion 55' may be included. The second limiting portion 55' may be fixed in the joint accommodating cavity 221b-2. In the locked state, the second limiting portion 55' may be pressed against the supporting portion 512' from top to bottom.

[0141] In this way, in the locked state, the lock head 51′ can form a three-point support scheme, the force on the lock head 51′ is more balanced, and the locking of the support by the lock head 51′ can be more reliable; moreover, due to the interaction of the three force points, there is basically no force between the arc-shaped notch 513′ and the rotating shaft portion 541′, which has a positive effect on ensuring the reliability of the locking mechanism.

[0142] Here, the embodiment of the present invention does not limit the structure of the second limiting portion 55′, which can be plate-shaped or block-shaped; similarly, the embodiment of the present invention does not limit the number of the second limiting portions 55′, which can be one or include multiple independent limiting members, as long as it can achieve the above-mentioned technical effects.

[0143] Please refer to Figure 5C , and combined with Figure 2C , Figure 3C In an exemplary embodiment, the locking driving beam assembly 53' may include a push beam 531', a guide sleeve 532' and a connecting beam unit 533'. The guide sleeve 532' may be fixedly arranged, specifically, may be installed in the joint accommodation cavity 221b-2 (see the attached Figure 4C ), the push beam 531 ′ and the guide sleeve 532 ′ can be slidably connected, one end of the connecting beam unit 533 ′ is hinged to the push beam 531 ′, and the other end is hinged to the lock body 52 ′.

[0144] With this structure, when the push beam 531′ is driven to move upward, the hinged connecting beam unit 533′ can drive the lock body 52′ to slide in the direction away from the lock head 51′, and then the lock head 51′ can rotate and unlock by itself; and when the driving force disappears, relying on its own gravity, the push beam 531′ can automatically slide down along the guide sleeve 532′, and drive the lock body 52′ to slide in the direction close to the lock head 51′ through the connecting beam unit 533′ to support the support part 512′ again, and the lock head 51′ can rotate in the opposite direction to achieve automatic locking. Of course, the reverse driving force can also be provided by an external device to drive the push beam 531′ to reset and lock.

[0145] Specifically, the push beam 531' can be directly opposite to the first joint connection hole 321d (refer to Figure 2C and Figure 3C ), so that the unlocking component can pass through the joint first connection hole 321d and contact the push beam 531', thereby applying an upward unlocking driving force to the push beam 531'.

[0146] It should be pointed out that the embodiment of the present invention does not limit the source of the driving force applied to the push beam 531′ when it is unlocked. A manual drive solution may be adopted. For example, an unlocking component such as an unlocking lever may be provided. When unlocking is required, the staff may manually operate the unlocking component to generate a driving force for the push beam 531′. Alternatively, an automatic drive solution may be adopted. In this case, the power source may be a motor, a cylinder, an oil cylinder, etc. These power sources may be installed on the vehicle body or on ground equipment. The specific selection may be made according to actual conditions. A transmission mechanism may also be provided between the power source and the push beam 531′ to transmit the driving force of the power source.

[0147] The beam section of the push beam 531′ located above the guide sleeve 532′ may also be provided with a connecting sleeve 531a′. Figure 6C As shown, the connecting sleeve 531a′ may specifically include a tube portion and a hinge portion. The tube portion can be installed on the upper portion of the push beam 531′ by threaded connection, welding, interference fit, etc. The hinge portion may include two hinge plates arranged opposite to each other, and the aforementioned connecting beam unit 533′ may be hinged between the two hinge plates.

[0148] The connection sleeve 531a' and the guide sleeve 532' mentioned above can also be used as a limiter for the downward movement of the push beam 531' to limit the maximum downward movement distance of the push beam 531', and at the same time, also limit the displacement distance of the lock body 52'.

[0149] In fact, the downward movement limit of the push beam 531′ can also be achieved through the cooperation of the lock head 51′ and the second limiting portion 55′. In this way, the above-mentioned connecting sleeve 531a′ may not exist; or, the connecting end of the connecting beam unit 533′ and the push beam 531′ can also be used for limiting. The connecting end and the push beam 531′ are hinged, and the two are usually arranged at an angle during actual operation. Therefore, even if the connecting sleeve 531a′ does not exist, the connecting end can also serve as a limiting component for the downward movement of the push beam 531′.

[0150] Furthermore, a first elastic member 531b' may be included, one end of which may act on the push beam 531'. In the unlocked state, the deformation of the first elastic member 531b' may increase to gather elastic force. In this way, when the driving force acting on the push beam 531' disappears, the elastic force of the first elastic member 531b' may be released to cooperate with the gravity of the push beam 531' to jointly drive the lock head 51' to reset and lock.

[0151] Specifically, the first elastic member 531b' can be a spring, which can be installed in a sleeve on the push beam 531', and the lower end of the push beam 531' can be provided with a support member 531c', and the two ends of the spring can respectively abut against the guide sleeve 532' and the support member 531c'. Among them, the push beam 531' can act as a spring column, which is conducive to preventing the radial movement of the spring during the expansion and contraction process, and has a positive effect on improving the stability of the structure and the reliability of power transmission; and with this structure, in the unlocked state, the push beam 531' can move upward, and the first elastic member 531b' can be compressed, and when restoring the lock, the push beam 531' can move downward, and the first elastic member 531b' can be released again.

[0152] In fact, in the locked state, the first elastic member 531b′ can also have a certain amount of pre-compression, that is, the first elastic member 531b′ can still provide a certain elastic force when locked, which has a positive effect on ensuring the stability of the locked state of the lock head 51′, and can avoid the automatic unlocking of the lock head 51′ when the rail vehicle passes through a curve.

[0153] To facilitate adjustment of the pre-compression amount, the support member 531c′ may be a nut, so that by changing the screwing position of the nut, the spacing between the support member 531c′ and the guide sleeve 532′ can be adjusted, thereby adjusting the pre-compression amount of the first elastic member 531b′ in the locked state.

[0154] In the unlocked state, the first elastic member 531b′ can actually be in a stretched state. At this time, the installation position of the first elastic member 531b′ can change. Specifically, it can be arranged between the connecting sleeve 531a′ and the guide sleeve 532′, and its two ends can be fixedly connected to the connecting sleeve 531a′ and the guide sleeve 532′ to transmit the pulling force.

[0155] The connecting beam unit 533′ can be a structure formed by combining multiple connecting beams. In an exemplary embodiment, the connecting beam unit 533′ can include a first locking connecting beam 533a′, a second locking connecting beam 533b′ and a transfer block 533c′. The transfer block 533c′ can be provided with a non-collinear fixed hinge point 533c-1′, a first hinge point 533c-2′ and a second hinge point 533c-3′. The fixed hinge point 533c-1′ can be fixedly set, specifically, it can be fixed to the end connecting hook 221. One end of the first locking connecting beam 533a′ can be hinged to the push beam 531′, and the other end can be hinged to the first hinge point 533c-2′. One end of the second locking connecting beam 533b′ can be hinged to the lock body 52′, and the other end can be hinged to the second hinge point 533c-3′.

[0156] Using this structure, Figure 2C , Figure 3CAs shown, when the push beam 531′ moves upward, it can drive the first locking beam 533a′ to move upward, and then the adapter block 533c′ can be driven to rotate clockwise around the fixed hinge point 533c-1′, and the adapter block 533c′ can drive the second locking beam 533b′ and the lock body 52′ to move to the left, and the lock head 51′ can be rotated counterclockwise to unlock the support part; and when the push beam 531′ moves downward, it can drive the first locking beam 533a′ to move downward, and then the adapter block 533c′ can be driven to rotate counterclockwise, and the adapter block 533c′ can drive the second locking beam 533b′ and the lock body 52′ to move to the right, and the lock head 51′ can be rotated clockwise to re-lock the support part.

[0157] It should be pointed out that the above-mentioned description of the specific structure of the locking drive beam assembly 53' is only a preferred scheme of the embodiment of the present invention, and cannot be used as a limitation on the scope of implementation of the locking mechanism provided by the present invention. Other forms of locking drive beam assemblies 53' can also be adopted under the condition of meeting the functions. For example, the locking drive beam assembly 53' can be directly set as a beam capable of linear displacement.

[0158] Furthermore, the joint chassis subsection 3a is also provided with a transverse stop mechanism. When the support part 4 is reset from a position separated from the joint chassis 3 to a position connected to the joint chassis 3, the transverse stop mechanism can determine the reset position of the support part 4 to ensure that the support part 4 is accurately connected to the joint chassis 3.

[0159] The figure shows two types of lateral stop mechanisms, Figure 1D-Figure 6D A first lateral stop mechanism is shown, Figure 1E-Figure 6E A second lateral stop mechanism is shown. Both are described below.

[0160] The first transverse stop mechanism

[0161] like Figure 1D-Figure 3D As shown, the lateral stop mechanism comprises:

[0162] Support 61, support 61 is fixed to joint connection hook 321, and can be fixed by welding or other methods, and support 61 is provided with a through hole 611;

[0163] Stop beam 62;

[0164] The stop driving beam assembly 63 is transmission-connected to the stop beam 62; in the stopping state, the stop beam 62 can extend out of the through hole 611 to form a lateral stop for the supporting part 4; in the releasing state, the stop driving beam assembly 63 can drive the stop beam 62 to retract to release the stop for the supporting part 4.

[0165] With this structure, in the stopping state, the stop beam 62 can extend from the through hole 611 to form a lateral stop for the support part 4, thereby ensuring the accurate resetting of the support part 4; and in the releasing state, the stop driving beam assembly 63 can act on the stop beam 62 to retract it, thereby releasing the stop for the support part 4 so as not to affect the normal separation of the support part 4 and the joint base frame 3.

[0166] Furthermore, a stop elastic member 64 may be included, which may act on the stop beam 62. During the unblocking process, the deformation of the stop elastic member 64 may increase to gather elastic force. In this way, when the driving force acting on the stop driving beam assembly 63 disappears, the stop elastic member 64 may be released to drive the stop beam 62 to automatically return to the stop position, thereby improving the automation of the device.

[0167] Combination Figure 3D The stop beam 62 may include a thick neck 621 and a thin neck 622, and a step surface 623 may be formed between the two. The stop elastic member 64 may be a spring, which may be mounted on the thin neck 622 and may interact with the step surface 623. At this time, the thin neck 622 may also play the role of a spring column to guide the expansion and contraction of the spring, which may largely avoid radial movement of the spring during the expansion and contraction process, and has a positive effect on improving the stability and reliability of the transmission.

[0168] It should be pointed out that in addition to the solution of using a spring, the stop elastic member 64 can also be an elastic element in other forms such as an elastic ball, an elastic block, a tension rope, etc., as long as it can meet the use effect.

[0169] The support 61 can also be provided with a limit piece 65, and the two ends of the stop elastic piece 64 can respectively act on the limit piece 65 and the step surface 623. In the scheme in the attached figure, the stop beam 62 can use the thick neck 621 as a stop part to improve the strength of the stop part. When disengaging, the step surface 623 can generate a compression force on the stop elastic piece 64 to increase the compression amount of the stop elastic piece 64. In this scheme, the stop elastic piece 64 is in contact with the limit piece 65 and the step surface 623.

[0170] Moreover, the cross section of the thick neck 621 can be non-circular, and the through hole 611 can match the thick neck 621. Matching here means that the shapes and sizes of the two are roughly the same. In this way, when the thick neck 621 is inserted into the through hole 611, the two will not rotate relative to each other, which can improve the reliability of the stop positioning. Further, the stop surface of the thick neck 621 in contact with the support part 4 can be a plane, so that the contact area between the support part 4 and the stop surface can be larger, and the reliability of the stop can be improved to a greater extent.

[0171] In fact, during the disengagement process, the stop elastic member 64 can also generate pulling force. At this time, the thin neck 622 of the stop beam 62 can be used as a stop portion in contact with the support portion 4. In this solution, both ends of the stop elastic member 64 need to be connected to the limit member 65 and the step surface 623 so that pulling force can be generated during disengagement.

[0172] The structure of the limiter 65 is not limited here. During the specific implementation, those skilled in the art can set it according to actual needs, as long as the above-mentioned effect can be achieved. Figure 3D In the scheme, the stopper 65 can be in the shape of a sleeve, which can be a round cylinder, a square cylinder or a special-shaped cylinder of other shapes. The sleeve can protect the spring to prevent rain, dust and the like from intervening and affecting the normal operation of the spring to a large extent; Fig.6D In the solution, the limiter 65 can be plate-shaped or block-shaped, and can be connected to the support 61 through the upper cover 615. At this time, the spring is in a relatively open space, and the operator can directly observe it to facilitate adjustment of the installation state of the spring.

[0173] Combination Figure 4D In fact, the embodiment of the present invention does not limit the structure of the support 61. Its structure is mainly to adapt to the connection with the joint connecting hook 321. In specific implementation, technical personnel in this field can adjust the shape of the support 61 according to the joint connecting hook 321. The support 61 needs to provide corresponding installation points, one of which is the aforementioned through hole 611. Another installation point is also shown in the figure - the installation hole 612, which can be used to install the brake pipe assembly of the piggyback vehicle (not shown in the figure).

[0174] The stop driving beam assembly 63 may include a first connecting beam 631 that is hingedly arranged. One end of the first connecting beam 631 may be a driving end 6311 for receiving an external driving force, and the other end may be a connecting end 6312. The first hinge shaft 633 of the first connecting beam 631 may be fixedly arranged, specifically, may be fixedly installed on the support 61 and located between the driving end 6311 and the connecting end 6312. The connecting end 6312 may be transmission-connected to the stop beam 62.

[0175] Here, the embodiment of the present invention does not limit the source of the driving force exerted on the stop drive beam assembly 63 when disengaging. It can adopt a manual driving solution. For example, a disengaging component such as a disengaging lever can be provided. When disengaging is required, the disengaging component can be manually operated by a staff member to generate a driving force for the driving end 6311. Alternatively, an automatic driving solution can be adopted. In this case, the power source can be a motor, a cylinder, an oil cylinder, etc. These power sources can be installed on the vehicle body or on ground equipment. The specific selection can be made according to actual conditions. A transmission mechanism can also be provided between the power source and the driving end 6311 to transmit the driving force of the power source.

[0176] In one approach, if Figure 1D-Figure 3D As shown, the stop drive beam assembly 63 may also include a second connecting beam 632, one end of which may be connected to the stop beam 62 by threaded connection or welding, and the other end and the connecting end 6312, one of which may be provided with a second hinge shaft 634 and the other may be provided with a strip guide hole 631a-1, and the second hinge shaft 634 may be inserted into the strip guide hole 631a-1.

[0177] With such arrangement, through the cooperation between the second hinge shaft 634 and the strip guide hole 631a-1, the rotational movement of the connecting end 6312 can be converted into the linear movement of the second connecting beam 632, thereby driving the stop beam 62 to extend or retract.

[0178] In the drawings, the strip-shaped guide hole 631a-1 can be provided on the connecting end portion 6312, and the second hinge shaft 634 can be fixed on the second connecting beam 632, so that the size of the second connecting beam 632 can be relatively small and the structure can be more compact.

[0179] In specific practice, the spring may have a certain pre-compression amount to ensure the reliability of the stop beam 62 when it is in the stop position, and the adjustment of the pre-compression amount may be determined by the connection position between the second connecting beam 632 and the stop beam 62 .

[0180] Based on the solution of fixing the second connecting beam 632 and the stop beam 62 by threaded connection, a first anti-loosening member 624 can also be provided, and the first anti-loosening member 624 can also be connected to the stop beam 62 and can be tightly pressed against the second connecting beam 632 to prevent the second connecting beam 632 from loosening. The first anti-loosening member 624 can specifically be an anti-loosening nut, and of course, it can also be an anti-loosening limiting member in the form of an insert, a block, etc.

[0181] Furthermore, a connecting plate 613 and a guard plate 614 may be included. One end of the connecting plate 613 may be connected to the support 61, and the other end may be connected to the guard plate 614, so as to protect the stop driving beam assembly 63. The aforementioned first hinge shaft 633 may be installed on the connecting plate 613. The specific installation method may be welding, or it may be installed with the aid of a mounting plate 633a and bolts, as long as the first hinge shaft 633 can be reliably fixed. In fact, the connecting plate 613 and the guard plate 614 may also be used as part of the support 61.

[0182] In another scheme, if Fig.6D , Fig.7D As shown, the connecting end 6312 may be provided with a strip guide groove 631e, the stop beam 62 may be inserted into the strip guide groove 631e, and the connecting end 6312 may abut against a locking piece 631f provided on the stop beam 62 to limit the connecting position between the connecting end 6321 and the stop beam 62.

[0183] With such arrangement, through the cooperation between the stop beam 62 and the strip guide groove 631e, the rotational movement of the connecting end 6312 can also be converted into the linear movement of the stop beam 62, so as to drive the stop beam 62 to release or return to the stop.

[0184] In detail, the connecting end 6312 can be confined between the locking member 631f and the limiting member 65, the adjustment of the pre-compression amount of the stop elastic member 64 can be determined by the installation position of the locking member 631f on the stop beam 62, and a gasket 631g can also be provided between the locking member 631f and the connecting end 6312 to reduce the wear at the connection between the two.

[0185] The connection method between the locking member 631f and the stop beam 62 can be a threaded connection or welding, etc. When it is a threaded connection, it can also include a second anti-loosening member, which can be an anti-loosening nut, or a stop strip (not marked in the drawings), a stop block, etc., which is used to limit the installation position of the locking member 631f.

[0186] In comparison, both of the above-mentioned two schemes can realize the conversion of the rotational motion of the first connecting beam 631 into the linear motion of the stop beam 62, and can realize the switching of the stop beam 62 between the stop state and the release state. In specific applications, technical personnel in this field can make a choice according to actual needs.

[0187] Taking the first scheme mentioned above as an example, the first connecting beam 631 may include a long plate member 631a and a short plate member 631b arranged at intervals, the first hinge shaft 633 may be connected to the long plate member 631a and the short plate member 631b, one end of the long plate member 631a forms the above-mentioned connecting end 6312, the above-mentioned strip guide hole 631a-1 may be arranged on the long plate member 631a, and a roller 631c may be connected between the other end of the long plate member 631a and the short plate member 631b. At this time, the long plate member 631a, the short plate member 631b and the roller 631c are combined to form the driving end 6311.

[0188] When the external driving force acts on the roller 631c, the roller 631c can rotate, which can reduce the friction between the driving end 6311 and the external driving device, and has a positive effect on reducing the wear of the driving end 6311.

[0189] Combination Figure 5D , and may also include a roller 631d, the roller 631d may include a rod 631d-1 and a head 631d-2, the radial dimension of the head 631d-2 may be larger than the rod 631d-1, the long plate 631a and the short plate 631b may be provided with a through hole 631b-1, and the through hole 631b-1 of one of the two located on the inner side may be a stepped hole, in the assembled state, at least part of the head 631d-2 may be hidden in the large-diameter hole section of the stepped hole, and the end of the rod 631d-1 away from the head 631d-2 may be locked with the locking nut 631d-3.

[0190] The "inside" here refers to the side close to the joint connecting hook 321. With this design, the protruding length of the roller 631d on the inner side can be shorter, which can largely avoid the contact friction between the driving end 6311 and the joint connecting hook 321 when rotating.

[0191] In the above-mentioned schemes, the recovery stop of the stop beam 62 mainly relies on the stop elastic member 64 directly acting on the stop beam 62. In fact, in addition to this scheme, the stop driving beam assembly 63 can also be used to drive the stop beam 62 to return to the stop state. In other words, the unblocking and return stop of the stop beam 62 can be completed by the stop driving beam assembly 63. This scheme can be achieved by setting an elastic member on the stop driving beam assembly 63.

[0192] In addition, a core of the transverse stop mechanism provided by the present invention is the separation of the stop drive beam assembly 63 and the stop beam 62. In the stop state, actually only the stop beam 62 and the support 61 are subjected to force, and the stop drive beam assembly 63 involved in the driving is not subjected to force. This is a key point of the high reliability of the transverse stop mechanism provided by the present invention.

[0193] The second lateral stop mechanism

[0194] like Figure 2E and Figure 4E-Figure 6E As shown, the lateral stop mechanism 6' comprises:

[0195] A stop beam 61' is hingedly arranged, wherein two ends of the stop beam 61' are respectively a driving end 611' and a stop end 612', a hinge shaft 613' of the stop beam 61' is located between the driving end 611' and the stop end 612', and the hinge shaft 613' is fixed to the joint connection hook 321;

[0196] A limiting beam 62', which is fixed to the joint connecting hook 321;

[0197] In the stopping state, the limiting beam 62′ is laterally pressed against the outer side of the stopping beam 61′, and the stopping beam 61′ can form a lateral stop for the supporting portion 4; in the releasing state, the driving end 611′ can be rotated under force to drive the stopping end 612′ to release the stop for the supporting portion 4.

[0198] By adopting the above structure, in the stopping state, the limiting beam 62′ can be tightly pressed against the stop beam 61′ in the transverse direction to provide a transverse supporting force for the stop beam 61′, and then the stop beam 61′ forms a transverse stop for the support part 4, which can ensure the accurate resetting of the support part 4; and in the releasing state, the driving end 611′ can be subjected to force and drive the entire stop beam 61′ to rotate, and then the stop end 612′ can be driven to rotate to release the stop, so as not to affect the normal separation of the support part 4 and the joint base 3.

[0199] More importantly, in the stopping state, when the support part 4 is reset and hits the stop beam 61′, only the stop end 612′ and the limiting beam 62′ are subjected to force, and the driving end 611′ which is the moving part of the lateral stop mechanism is not subjected to force, which plays a key role in ensuring the reliability of the lateral stop mechanism provided by the present invention.

[0200] It should be pointed out that the embodiment of the present invention does not limit the source of the driving force applied to the driving end 611′ when the gear is disengaged. A manual driving scheme may be adopted. For example, a disengaging component such as a disengaging lever may be provided. When the gear needs to be disengaged, the disengaging component may be manually operated by a staff member to generate a driving force for the driving end 611′. Alternatively, an automatic driving scheme may be adopted. In this case, the power source may be a motor, a cylinder, an oil cylinder, etc. These power sources may be installed on the vehicle body or on ground equipment. The specific selection may be made according to actual conditions. A transmission mechanism may also be provided between the power source and the driving end 611′ to transmit the driving force of the power source.

[0201] Furthermore, a first limiting member 63 ′ may be included, and the first limiting member 63 ′ is fixed to the joint connecting hook 321 . In the unlocked state, the stop beam 61 ′ may abut against the first limiting member 63 ′ to prevent the stop beam 61 ′ from rotating excessively.

[0202] Here, the embodiment of the present invention does not limit the shape of the first stopper 63', which can be plate-shaped, block-shaped, column-shaped, etc., and can be determined according to actual conditions; similarly, the embodiment of the present invention does not limit the number and installation position of the first stopper 63', as long as the above-mentioned effect can be achieved. In an exemplary solution of the present invention, the first stopper 63' can be formed by extending the joint hook wall plate 221c of the joint connecting hook 321, so that there is no need to specially set the first stopper 63', and the number of parts can be less.

[0203] In the unlocked state, that is, when the stop beam 61' abuts against the first limiter 63', the center of gravity of the stop beam 61' can deviate from the hinge shaft 613' in the longitudinal direction and be located on the side where the stop end 612' is located. In this way, when the driving force acting on the driving end 611' disappears, the stop beam 61' can automatically rotate to the stop state under the action of its own gravity, without the need to set up other driving components, and the structure of the device can be relatively simple.

[0204] And / or, a stop elastic member 65' may be further included, and the stop elastic member 65' may act on the stop beam 61'. During the unblocking process, the deformation of the stop elastic member 65' may increase to gather elastic force. In this way, when the driving force acting on the driving end 611' disappears, the elastic force gathered by the stop elastic member 65' may be released to drive the stop beam 61' to rotate to the stop state alone or in cooperation with the aforementioned gravity.

[0205] The above-mentioned stop elastic member 65′ can specifically be a torsion spring, which can be installed in a sleeve on the hinge shaft 613′. Among the two protruding ends of the torsion spring, one protruding end can be fixed (or abutted against a fixed component, such as the joint connecting hook 321), and the other protruding end can abut against the stop beam 61′. When the stop beam 61′ is rotated to release the stopping state, the torsion spring can gather the torsional deformation force, and when the driving force acting on the driving end 611′ disappears, the above-mentioned torsional deformation force can be released to drive the stop beam 61′ to rotate automatically.

[0206] The stop elastic member 65' may also be a linear spring, such as a tension spring, a compression spring, or other spring element that generates elastic force by axial displacement. Figure 4E Taking the solution in as an example, the linear spring can be a tension spring, one end of which can be fixed, and the other end can be connected to the stop beam 61', so that the elastic force can be gathered when the stop beam 61' rotates to release the stop.

[0207] In addition to the above-mentioned torsion spring and linear spring, the stop elastic member 65 ′ may also be an elastic element in the form of an elastic block, an elastic ball, a tension rope, etc., as long as the above-mentioned technical effect can be achieved.

[0208] Furthermore, a second stopper 64' may be included, and the second stopper 64' is fixed to the joint connection hook 321. In the stop state, the stop beam 61' may abut against the second stopper 64' to limit the position of the stop beam 61' in the stop state. The structure, quantity and installation position of the second stopper 64' may be similar to those of the first stopper 63', and a repeated description is not given here.

[0209] Moreover, through the support of the above-mentioned second limiting member 64′, the stop beam 61′ can be set with a gap between it and the limit beam 62′ in the vertical direction. In this way, the limit beam 62′ does not need to bear the gravity of the stop beam 61′. Accordingly, no shear stress will be generated at the connection between the limit beam 62′ and the joint connecting hook 321, and the connection reliability between the limit beam 62′ and the joint connecting hook 321 can be higher.

[0210] With respect to the transverse stop mechanism 6 ′ of the support portion 4 involved in the above-mentioned embodiments, the structure of the stop beam 61 ′ will be described in the following embodiments of the present invention.

[0211] Combination Figure 2E In the stop state, the driving end 611′ can be an end that is gradually inclined from top to bottom toward the stop end 612′. In this way, when the driving end 611′ is acted upon by an upward driving force, the stop beam 61′ will naturally rotate in the direction of releasing the stop state to ensure that the stop beam 61′ can be unlocked smoothly.

[0212] It can be understood that adjusting the shape of the driving end portion 611 ′ is actually adjusting the driving force and the direction of action of the driving end portion 611 ′. Thus, in a specific implementation, the rotational unlocking of the stop beam 61 ′ can also be achieved by adjusting the direction of the driving force.

[0213] In addition, in the stopping state, the end of the stopping beam 61′ away from the driving end 611′ may be provided with a downwardly bent elbow, which can serve as the above-mentioned stop end 612′. The setting of the elbow can improve the strength of the stop end 612′ and at the same time, can avoid the vehicle body and brake pipe protection device (not shown in the figure).

[0214] Recombination Fig. 6EThe hinge shaft 613′ of the stop beam 61′ can be a stepped shaft, which can specifically include a large diameter section 613a′ and a small diameter section 613b′, wherein the large diameter section 613a′ can be used to connect with the joint connection hook 321, and the stop beam 61′ can be installed on the large diameter section 613a′; it can also include a third limiting member 613c′, which can specifically be a nut, which can be installed on the small diameter section 613b′ to cooperate with the joint connection hook 321 to limit the installation position of the stop beam 61′. It should be understood that the function of the third limiting member 613c′ is mainly to limit, not to lock, and after the installation is completed, it is necessary to ensure that the stop beam 61′ can rotate smoothly.

[0215] A gasket 613d′ may be provided between the third limiter 613c′ and the stop beam 61′. The gasket 613d′ may be made of rubber or metal, etc., to avoid direct friction between the stop beam 61′ and the third limiter 613c′, which has a positive effect on reducing wear.

[0216] The above is a detailed introduction to the articulated chassis of a sled provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention, and the description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A joint chassis of a saddleback vehicle, characterized in that: The joint chassis (3) comprises a joint chassis section (3a), the joint chassis section (3a) comprising a joint chassis body (31), a joint connection mechanism (32) fixed at the rear end of the joint chassis body (31), and a joint (33) fixed at the front end of the joint chassis body (31); the joint connection mechanism (32) comprises a joint connection hook (321), the joint (33) is connected to the joint (33) of another joint chassis section (3a) via a joint bearing (34), and in a connected state, the two joint chassis sections (3a) can rotate in a lateral and vertical direction; the hook mouth of the joint connection hook (321) faces upward, and the inner hook surface of the joint connection hook (321) is provided with a joint groove (321a) extending in a lateral direction, and the joint groove (321a) is used to place and support the lower circular shaft (412c) of the backpack support part (4) upward; The joint chassis body (31) comprises a joint frame and a joint floor, wherein the joint floor covers the top frame opening of the joint frame; The joint connection mechanism (32) further comprises a joint transverse limiter (323) and a joint longitudinal supporter (322), wherein the joint longitudinal supporter (322) is located above the joint connection hook (321), and the joint transverse limiter (323) is located above the joint connection hook (321) and in front of the joint longitudinal supporter (322); The joint transverse limiting member (323) comprises a joint transverse limiting groove (323a), and the joint transverse limiting groove (323a) is used to insert the guide limiting member (422) of the support portion (4). When the two are in an inserted state, the left groove wall and the right groove wall of the joint transverse limiting groove (323a) are respectively located on the left and right sides of the guide limiting member (422) to limit the transverse position of the guide limiting member (422).

2. The joint chassis according to claim 1, characterized in that: The joint longitudinal support member (322) comprises a joint longitudinal support body (322a) and joint wear plates (322b) fixed to the front and rear ends of the joint longitudinal support body (322a); the joint longitudinal support body (322a) is hooked by the upper hook (421) of the support portion (4) with the hook opening facing downwards; when both are hooked, the joint wear plate (322b) at the front end abuts against the front side of the inner hook surface of the upper hook (421), and the joint wear plate (322b) at the rear end abuts against the rear side of the inner hook surface of the upper hook (421).

3. The joint chassis according to claim 2, characterized in that: The upper portion of the joint wear plate (322b) at the front end is tilted backward relative to the lower portion, and the upper portion of the joint wear plate (322b) at the rear end is tilted forward relative to the lower portion; and the inner surface of the joint groove (321a) forms a joint guide surface, and the joint guide surface cooperates with the lower circular shaft (412c) to guide the joint chassis section (3a) to rotate horizontally.

4. The joint chassis according to claim 1, characterized in that: The upper part of the left groove wall and the upper part of the right groove wall of the joint transverse limiting groove (323a) respectively form a left guide surface (323b) and a right guide surface (323c) for guiding the guide limiter (422) into the joint transverse limiting groove (323a), the upper side of the left guide surface (323b) being inclined to the left relative to the lower side, and the upper side of the right guide surface (323c) being inclined to the right relative to the lower side.

5. The joint chassis according to claim 1, characterized in that: The joint chassis body (31) comprises: a first joint cross beam (3101), a second joint cross beam (3102), a third joint cross beam (3103), a first joint longitudinal beam (3104), a second joint longitudinal beam (3105), a joint traction beam (3106), a first joint floor (3107), and a second joint floor (3108); The first joint cross beam (3101) is arranged behind the second joint cross beam (3102) and the third joint cross beam (3103); the left end of the first joint cross beam (3101) is fixed to the left end of the second joint cross beam (3102) via the first joint longitudinal beam (3104); the right end of the first joint cross beam (3101) is fixed to the right end of the third joint cross beam (3103) via the second joint longitudinal beam (3105); the right end of the second joint cross beam (3102) and the left end of the third joint cross beam (3103) are respectively fixed to the front end of the joint traction beam (3106), thereby forming a joint frame; the rear end of the joint traction beam (3106) is fixed to the first joint cross beam (3101); and the joint (33) is fixed to the front end of the joint traction beam (3106); The first joint floor (3107) and the second joint floor (3108) cover the top frame of the joint frame and are respectively located on the left and right sides of the joint traction beam (3106); the first joint floor (3107) is fixed to the second joint cross beam (3102), the first joint longitudinal beam (3104) and the joint traction beam (3106); the second joint floor (3108) is fixed to the third joint cross beam (3103), the second joint longitudinal beam (3105) and the joint traction beam (3106).

6. The joint chassis according to claim 5, characterized in that: The joint base body (31) also includes two joint side bearings (3109), which are respectively located on the left and right sides of the joint (33), one of the joint side bearings (3109) is fixed on the front side of the second joint cross beam (3102), and the other joint side bearing (3109) is fixed on the front side of the third joint cross beam (3103).

7. The joint chassis according to claim 5, characterized in that: The joint chassis body (31) further comprises two groups of reinforcement plates (3110), one group of reinforcement plates (3110) being fixed between the first joint floor (3107) and the first joint cross beam (3101), and the other group of reinforcement plates (3110) being fixed between the second joint floor (3108) and the first joint cross beam (3101).

8. The joint chassis according to any one of claims 1 to 7, characterized in that: The joint base frame section (3a) further comprises a locking mechanism; the joint connecting hook (321) comprises a joint hook body (321b), the joint hook body (321b) comprises two joint hook parts (321b-1) arranged at intervals in the transverse direction, and a joint accommodating cavity (321b-2) formed between the two joint hook parts (321b-1), the joint accommodating cavity (321b-2) being used for installing the locking mechanism.

9. The joint chassis according to claim 8, characterized in that: The joint connecting hook (321) further comprises a joint hook wall plate (321c) covering the outer hook surface of the joint hook body (321b), the joint hook wall plate (321c) being provided with a joint first connecting hole (321d), the joint first connecting hole (321d) being in communication with the joint accommodating cavity (321b-2), so that an unlocking component can extend into the joint accommodating cavity (321b-2) through the joint first connecting hole (321d) to unlock the locking mechanism.

10. The joint chassis according to claim 8, characterized in that: The locking mechanism (5) comprises: A lock body (51), the lock body (51) being hinged to the joint connection hook (321), one end of the lock body (51) being a locking end (511), the other end being a first limiting end (512), and the hinge shaft (52) of the lock body (51) being located between the locking end (511) and the first limiting end (512); a first limiting portion (53), wherein the first limiting portion (53) is fixed in the joint accommodating cavity (321b-2); A locking drive beam assembly (54) connected to the lock body (51); In the locked state, the first limiting end portion (512) abuts against the first limiting portion (53) from top to bottom, and the locking end portion (511) abuts against the supporting portion (4) to lock the supporting portion (4); in the unlocked state, the locking drive beam assembly (54) can drive the first limiting end portion (512) to disengage from the first limiting portion (53) from bottom to top, and the locking end portion (511) to rotate and disengage from the supporting portion (4).

11. The joint chassis according to claim 10, characterized in that: The locking drive beam assembly (54) comprises a push beam (541), a guide sleeve (542) and a transmission beam (543); the guide sleeve (542) is fixed in the joint accommodating cavity (321b-2); the push beam (541) is slidably connected to the guide sleeve (542); one end of the transmission beam (543) is hinged to the lock body (51), and the other end is hinged to the push beam (541).

12. The joint chassis according to claim 10, characterized in that: The locking mechanism (5) further comprises a second limiting portion (55), the second limiting portion (55) being fixed in the joint accommodating cavity (321b-2), and the lock body (51) further comprises a second limiting end portion (514), and in a locked state, the second limiting end portion (514) abuts against the second limiting portion (55) from bottom to top.

13. The joint chassis according to claim 8, characterized in that: The locking mechanism (5') comprises: A lock head (51'), the lock head (51') being rotatably connected to the joint connection hook (321), and the lock head (51') being provided with a locking portion (511') and a supporting portion (512') on both sides of its rotation center line; A lock body (52'), wherein the lock body (52') is slidably connected to the joint connection hook (321); A locking drive beam assembly (53') drivingly connected to the lock body (52'); In the locked state, the lock body (52') supports the support portion (512') from bottom to top, so that the locking portion (511') presses the supporting portion (4); in the unlocked state, the locking drive beam assembly (53') can drive the lock body (52') to move in a direction away from the lock head (51'), and the supporting portion (512') can rotate downward around the rotation center line, so that the locking portion (511') rotates upward to disengage from the supporting portion (4).

14. The joint chassis according to claim 13, characterized in that: The locking drive beam assembly (53′) comprises a push beam (531′), a guide sleeve (532′) and a connecting beam unit (533′); the guide sleeve (532′) is fixed in the joint accommodating cavity (321b-2); the push beam (531′) is slidably connected to the guide sleeve (532′); one end of the connecting beam unit (533′) is hinged to the push beam (531′), and the other end is hinged to the lock body (52′).

15. The joint chassis according to claim 13, characterized in that: The locking mechanism (5′) further comprises a rotating support body (54′), wherein the rotating support body (54′) is fixed to the joint connecting hook (321), the rotating support body (54′) is provided with a rotating shaft portion (541′), the rotating shaft portion (541′) has an arc-shaped cylindrical surface, the locking head (51) is provided with an arc-shaped notch (513′) matching the rotating shaft portion (541′), the locking head (51′) is inserted into the rotating shaft portion (541′) with the arc-shaped notch (513′), and the central axis of the rotating shaft portion (541′) can be used as the rotation center line.

16. The joint chassis according to claim 13, characterized in that: The locking mechanism (5′) further comprises a second limiting portion (55′), wherein the second limiting portion (55′) is fixed in the joint accommodating cavity (321b-2), and in a locked state, the second limiting portion (55′) can be tightly pressed against the supporting portion (512′) from top to bottom.

17. The joint chassis according to any one of claims 1 to 7, characterized in that: The joint chassis sub-section (3a) further comprises a lateral stop mechanism (6), wherein the lateral stop mechanism (6) comprises: A support (61), the support (61) being fixed to the joint connection hook (321), the support (61) being provided with a through hole (611); Stop beam (62); A stop driving beam assembly (63) drivingly connected to the stop beam (62); In the stopping state, the stopping beam (62) extends out of the through hole (611) to form a lateral stop for the supporting portion (4); in the releasing state, the stopping driving beam assembly (63) can drive the stopping beam (62) to retract to release the stopping of the supporting portion (4).

18. The joint chassis according to any one of claims 1 to 7, characterized in that: The joint chassis sub-section (3a) further comprises a lateral stop mechanism (6'), wherein the lateral stop mechanism (6') comprises: A stop beam (61′) is hingedly arranged, wherein two ends of the stop beam (61′) are respectively a driving end (611′) and a stop end (612′), a hinge shaft (613′) of the stop beam (61′) is located between the driving end (611′) and the stop end (612′), and the hinge shaft (613′) is fixed to the joint connection hook (321); A limiting beam (62′), wherein the limiting beam (62′) is fixed to the joint connecting hook (321); In the stopping state, the limiting beam (62′) is laterally pressed against the outer side of the stopping beam (61′), and the stopping beam (61′) can form a lateral stop for the supporting portion (4); in the releasing state, the driving end portion (611′) is forced to rotate, so as to drive the stopping end portion (612′) to release the stop for the supporting portion (4).

19. The joint chassis according to claim 18, characterized in that: The transverse stop mechanism (6') further comprises a first stop member (63') and a second stop member (64'), wherein the first stop member (63') and the second stop member (64') are both fixed to the joint connection hook (321), and in an unblocked state, the stop beam (61') abuts against the first stop member (63'), and in a blocked state, the stop beam (61') abuts against the second stop member (64').

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