Connecting mechanism and vehicle collision test system

Abstract

The utility model provides a connecting mechanism and a vehicle collision test system. The connecting mechanism comprises a base, a sliding piece arranged on the base in a sliding mode, a hooking piece connected with the sliding piece in a transmission mode, a triggering unit arranged on the base and a locking unit used for locking the sliding piece. In the locking state, the hooking piece and the base form a hanging groove for hooking the pulling rope, the triggering unit is triggered to act relative to the base, and the locking unit is unlocked, so that the pulling rope pushes the hooking piece to move to be separated from the hanging groove. According to the connecting mechanism, the sliding part, the hooking part in transmission connection with the sliding part, the locking unit and the triggering unit are arranged on the base, and when the locking unit locks the sliding part, a hanging groove for hooking a traction rope can be formed, so that the connection between a tractor and a towed part is ensured; and when the triggering unit is triggered, the triggering unit can act relative to the base, so that the pulling rope pushes the hooking piece to move to be separated from the hanging groove, and separation of the towing vehicle and the towed piece is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle testing, in particular to a connecting mechanism; at the same time, the utility model also relates to a vehicle collision test system provided with the connecting mechanism. Background Art

[0002] In the prior art, a tractor is equipped with a connecting mechanism that pulls a towed object via a towing rope. Typically, the tractor needs to separate from the towed object after moving it to a predetermined position. However, the design of the connecting mechanism in the prior art is not rational, resulting in poor separation between the tractor and the towed object.

[0003] For example, the automotive collision traction system is a device used to ensure that a vehicle follows a predetermined path during a crash test. It is primarily used in real-world crash tests to assess a vehicle's safety and performance. By precisely controlling the vehicle's trajectory and speed, the system provides researchers with accurate and reliable test data, helping to improve vehicle design and safety.

[0004] During a collision, the tractor's connecting mechanism propels the impacting vehicle forward via a towing rope. This generates significant impact energy. To prevent this energy from being fed back into the traction system, the impacting vehicle is separated from the tractor at a point before reaching the impact wall. However, an inadequate connection mechanism design resulted in poor separation between the tractor and the impacting vehicle, hindering the success of the vehicle collision test. Utility Model Content

[0005] In view of this, the present invention aims to provide a connecting mechanism to facilitate the separation of the tractor and the towed member.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0007] A connecting mechanism for connecting a tractor and a towed member via a traction rope, the connecting mechanism comprising a base, a sliding member slidably arranged on the base, a hooking member transmission-connected to the sliding member, a triggering unit arranged on the base, and a locking unit for locking the sliding member; in the locked state, the hooking member and the base form a hanging groove for hooking the traction rope, and the triggering unit is triggered to move relative to the base and unlock the locking unit, so that the traction rope pushes the hooking member to move and escape from the hanging groove.

[0008] Furthermore, the trigger unit includes a trigger block and a locking block respectively arranged on both sides of the sliding member, and a connecting rod hinged between the trigger block and the locking block; the trigger block and the locking block are both hinged on the base, and the locking unit is arranged between the locking block and the sliding member.

[0009] Furthermore, the locking unit includes an insertion portion provided between the locking block and the sliding member, and an elastic portion provided between the locking block and the base; under the action of the elastic portion, the insertion portion inserts and connects the locking block and the sliding member.

[0010] Furthermore, the insertion portion includes a slot provided on one of the locking block and the sliding member, and a tongue provided on the other; and / or, the elastic portion includes a connecting block hinged to the locking block, and an elastic member provided between the connecting block and the base, and under the action of the elastic member, the insertion portion inserts and connects the locking block and the sliding member.

[0011] Furthermore, a long strip-shaped limiting groove is provided on one side of the locking block, and at least a portion of the connecting block is located in the limiting groove.

[0012] Furthermore, the trigger block is rotatably provided with a roller at one end away from the sliding member, and the roller is used to bear the external trigger force; and / or the trigger block is triangular and is connected to the base and the locking block through two corners respectively.

[0013] Furthermore, the number of the hooking members is two and they are arranged opposite to each other on both sides of the sliding member.

[0014] Furthermore, the hooking member is rotatably arranged on the base and is transmission-connected to the sliding member via a transmission rod, and the transmission rod is hinged between the hooking member and the sliding member.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The connecting mechanism described in the present invention is characterized by arranging a sliding member on the base, a hook member, a locking unit and a trigger unit that are transmission-connected to the sliding member. When the locking unit locks the sliding member, a hanging groove for hooking the traction rope can be formed, which is beneficial to ensuring the connection between the traction rope and the towed member. When the trigger unit is triggered, it can also move relative to the base and unlock the locking unit, so that the traction rope pushes the hook member to move and disengage from the hanging groove, thereby facilitating the separation of the tractor and the towed member.

[0017] In addition, the trigger block and the locking block are both hinged to the base. When the trigger block is triggered, the locking block can be driven by the connecting rod to move, thereby releasing the lock on the sliding member, allowing the traction rope to push the hook member to rotate, and the sliding member to slide via the transmission rod, thereby facilitating the traction rope to escape from the hanging slot. The elastic portion allows the insertion portion to insert and connect the locking block to the sliding member, which helps to ensure the locking effect. The insertion and matching effect of the slot and the tongue are good, thereby facilitating the locking between the locking block and the sliding member. The connection block hinged to the locking block in the elastic portion and the elastic member are arranged to enhance the elastic pushing effect of the elastic portion on the locking block, thereby facilitating the insertion effect between the locking block and the sliding member.

[0018] Furthermore, by providing a limiting groove on the locking block, with at least a portion of the connecting block positioned within the limiting groove, the stability of the connecting block during use is further enhanced. By providing a roller on the trigger block to support the contact force, the performance of the trigger block is further improved. The triangular shape of the trigger block is not only easy to arrange and implement, but also provides good performance. The provision of two hook members improves the reliability and stability of the connection between the tractor and the towed member. The hook member is rotatably mounted on the base, and the transmission rod is provided. This allows the transmission rod to drive the hook member to rotate as the sliding member slides, further facilitating the traction rope's escape from the hooking groove.

[0019] In addition, another object of the present invention is to provide a vehicle collision test system, comprising the connection mechanism as described above, and a push member disposed at a preset collision position.

[0020] Furthermore, the pushing member has a pushing surface for pushing the trigger unit, and the pushing surface is inclined downward along the pulling direction.

[0021] The vehicle collision test system of the present invention facilitates the separation of the tractor and the collision vehicle by providing the above-mentioned connecting mechanism and the push member provided at the preset collision position, thereby improving the success rate of the vehicle collision test.

[0022] In addition, the pushing surface on the pushing member is inclined downward along the traction direction, which is conducive to triggering the trigger unit and unlocking the locking unit, so that the traction rope is disengaged from the hanging groove, thereby facilitating the separation of the tractor and the colliding vehicle. The structure of the pushing surface is simple and easy to arrange and implement, which is conducive to reducing the cost of the vehicle collision test system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0024] Figure 1This is a structural schematic diagram of the connecting mechanism according to an embodiment of the present utility model from one viewing angle;

[0025] Figure 2 This is a schematic structural diagram of the connecting mechanism according to an embodiment of the present utility model from another perspective;

[0026] Figure 3 This is a schematic diagram of the structure of the interior of the connecting mechanism according to an embodiment of the present utility model from one viewing angle;

[0027] Figure 4 This is a schematic structural diagram of the interior of the connecting mechanism according to an embodiment of the present utility model from another perspective;

[0028] Figure 5 This is a schematic structural diagram of the connecting mechanism according to an embodiment of the present utility model in two states;

[0029] Figure 6 This is a schematic structural diagram of a sliding member according to an embodiment of the present utility model;

[0030] Figure 7 This is a structural diagram of the locking block according to an embodiment of the present utility model;

[0031] Figure 8 This is a schematic structural diagram of a vehicle collision test system according to an embodiment of the present utility model;

[0032] Figure 9 This is a schematic diagram of the internal structure of the vehicle collision test system according to an embodiment of the present utility model.

[0033] Description of reference numerals:

[0034] 1. Base; 2. Sliding member; 3. Hooking member; 4. Trigger block; 5. Locking block; 6. Connecting rod; 7. Elastic part; 8. Transmission rod; 9. Pushing member; 10. Connecting plate;

[0035] 100, hanging slot; 101, partition block; 102, shielding plate; 103, slide slot;

[0036] 201, slot; 202, mounting slot; 203, guide mating surface; 204, elastic block;

[0037] 301, first part; 302, second part; 303, rotating shaft; 304, first hinge shaft;

[0038] 401, roller; 402, third hinge axis; 403, fourth hinge axis;

[0039] 501, tongue; 502, limiting groove; 503, fifth hinge axis; 504, sixth hinge axis; 505, guide surface;

[0040] 701, connecting block; 702, elastic member; 703, mounting block; 704, seventh hinge axis;

[0041] 801, second hinge axis;

[0042] 901, push surface;

[0043] 1001. End portion. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0045] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "mounted," "connected," "connect," and "connector" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0048] This embodiment relates to a connecting mechanism for connecting a tractor and a towed object via a towing rope. The connecting mechanism aims to solve the problem of unreasonable connection mechanism design in the prior art, thereby improving the separation effect between the tractor and the towed object.

[0049] Overall, the connection mechanism of this embodiment comprises a base 1, a slider 2 slidably mounted on the base 1, a hook 3 drivingly connected to the slider 2, a trigger unit mounted on the base 1, and a locking unit for locking the slider 2. In the locked state, the hook 3 and the base 1 form a hanging groove 100 for hooking the traction rope. When the trigger unit is triggered, it moves relative to the base 1 and unlocks the locking unit, allowing the traction rope to push the hook 3 and escape from the hanging groove 100.

[0050] The connection mechanism described in this embodiment is achieved by arranging a sliding member 2 on the base 1, a hook member 3 connected to the sliding member 2 in a transmission manner, a locking unit and a trigger unit. When the locking unit locks the sliding member 2, a hanging groove 100 for hooking the traction rope can be formed, which helps to ensure that the tractor and the towed member can be connected through the traction rope. When the trigger unit is triggered, it can move relative to the base 1 and unlock the locking unit. The traction rope pushes the hook member 3 to move out of the hanging groove 100, so that the tractor is separated from the towed member, thereby improving the effect of separating the tractor and the towed member.

[0051] Based on the overall introduction above, an exemplary structure of the connecting mechanism in this embodiment is as follows: Figures 1 to 4 As shown in . The connecting mechanism is preferably provided on a tractor, and the traction rope is connected to the towed member and is hooked on the hanging groove 100 of the connecting mechanism so as to be towed by the tractor. The traction rope in this embodiment can be a traction rope in the prior art, for example, a flexible steel wire rope.

[0052] It should be noted that the towed object in this embodiment can be a product with towing requirements. For example, the towed object can be a vehicle. In this case, towing the vehicle by a towing vehicle can be used for vehicle collision testing, thereby improving the accuracy of the vehicle collision test.

[0053] In this embodiment, the base 1 serves as the main body of the entire connecting mechanism, which can be Figure 2 The base 1 is in the plate shape shown in the figure. The structure of the base 1 is simple and easy to process and form. The sliding member 2 in this embodiment is slidably arranged on the base 1 along the pulling direction, where the pulling direction is consistent with the length direction of the base 1. Preferably, the sliding member 2 is also in the shape of an elongated strip, and a slide groove 103 extending along the length direction of the base 1 is provided in the middle of one side of the base 1. The portion of the sliding member 2 facing the side of the base 1 is located in the slide groove 103 and slides along the length direction of the base 1 in the slide groove 103.

[0054] As a preferred embodiment, the hook member 3 in this embodiment is rotatably mounted on the base 1 and is transmission-connected to the sliding member 2 via a transmission rod 8, which is hinged between the hook member 3 and the sliding member 2. This arrangement allows the transmission rod 8 to drive the hook member 3 to rotate when the sliding member 2 slides, thereby further facilitating the traction rope to escape from the hanging groove 100.

[0055] like Figure 4 As shown in FIG, the hook member 3 is rotatably mounted on one side of the sliding member 2 via a rotating shaft 303. The hook member 3 is in a broken line shape and comprises a first portion 301 and a second portion 302 connected to each other. The rotating shaft 303 passes through the intersection of the first portion 301 and the second portion 302. The free end of the first portion 301 is hingedly connected to the transmission rod 8 via a first hinge shaft 304.

[0056] The other end of the transmission rod 8 is hinged to the right end of the sliding member 2 through the second hinge shaft 801. Figure 6 As shown in the figure, corresponding to the transmission rod 8, a mounting groove 202 extending along the length direction of the sliding member 2 is provided at the right end thereof, and the other end of the transmission rod 8 is specifically located in the mounting groove 202. The mounting groove 202 here can also avoid the rotating transmission rod 8, thereby ensuring the use effect of the transmission rod 8.

[0057] When in the locked state, Figure 4 and Figure 5 As shown by the solid line in FIG, the slider 2 slides to the left end of the base 1, and the second portion 302 is located outside the base 1 and is horizontal, that is, the second portion 302 is parallel or nearly parallel to the horizontal plane. The above-mentioned hanging groove 100 is formed between the second portion 302 and the base 1, and the notch of the hanging groove 100 is set to the right to facilitate the hooking of the traction rope. When in the unlocked state, as shown in FIG. Figure 5 As shown by the middle dotted line, the sliding member 2 slides to the right end of the base 1 and drives the hook member 3 to rotate through the traction rope. The angle between the second part 302 and the length direction of the base 1 increases, so that the end of the second part 302 is set toward the outside of the base 1, thereby facilitating the traction rope to escape from the hanging groove 100.

[0058] like Figure 4 As shown in FIG, two hook members 3 are arranged opposite each other on either side of the sliding member 2. The two hook members 3 are provided on the upper and lower sides of the sliding member 2, and two transmission rods 8 are provided, one corresponding to each hook member 3. Both transmission rods 8 are hinged to the sliding member 2 via the same second hinge axis 801. When in the locked state, the transmission rods 8 and hook members 3 cooperate to form a vertical "W" shape.

[0059] As a preferred embodiment, Figure 3 and Figure 4 As shown in FIG, the trigger unit in this embodiment includes a trigger block 4 and a locking block 5, respectively disposed on either side of the slider 2, and a connecting rod 6 hingedly connected between the trigger block 4 and the locking block 5. Both the trigger block 4 and the locking block 5 are hingedly connected to the base 1, and the locking unit is disposed between the locking block 5 and the slider 2. When the trigger block 4 is triggered, the locking block 5 is actuated via the connecting rod 6, thereby releasing the locking unit from locking the slider 2.

[0060] Regarding the specific structure, still refer to Figure 4As shown in , the trigger block 4 can be set on one side of the top of the sliding member 2. The trigger block 4 is triangular and is connected to the base 1 and the locking block 5 through two corners. Among them, the connecting rod 6 is located on the left side of the trigger block 4, and the lower left corner of the trigger block 4 is hinged to the top of the connecting rod 6 through the third hinge shaft 402. The lower right corner of the trigger block 4 is hinged to the base 1 through the fourth hinge shaft 403, and the corner at the top of the trigger block 4 can be used to withstand the external triggering force. In some embodiments, the trigger block 4 is rotatably provided with a roller 401 at one end away from the sliding member 2, and the roller 401 is used to withstand the external triggering force. The roller 401 is specifically connected to the corner at the top of the trigger block 4, which is conducive to ensuring the movement effect of the trigger block 4 during the traction process.

[0061] The locking block 5 in this embodiment is located below the sliding member 2. The locking block 5 is also preferably in the shape of an elongated strip. In the locked state, the locking block 5 is arranged parallel or nearly parallel to the traction direction. The right end of the locking block 5 is hinged to the base 1 via the fifth hinge shaft 503, and the left end of the locking block 5 is hinged to the bottom end of the connecting rod 6 via the sixth hinge shaft 504. The structure of the connecting rod 6, the trigger block 4 and the locking block 5 is simple and easy to arrange and implement. When the roller 401 on the trigger block 4 receives an external trigger force, the trigger block 4 can rotate downward with the fourth hinge shaft 403 as the center, causing the connecting rod 6 to move downward, and at the same time driving the locking block 5 to rotate downward with the fifth hinge shaft 503 as the center, thereby moving away from the sliding member 2, thereby facilitating the release of the locking unit from locking the sliding member 2.

[0062] As a preferred embodiment, the locking unit includes an inserting portion disposed between the locking block 5 and the slider 2, and an elastic portion 7 disposed between the locking block 5 and the base 1. Under the action of the elastic portion 7, the inserting portion inserts and connects the locking block 5 to the slider 2. The elastic portion 7 enables the inserting portion to insert and connect the locking block 5 to the slider 2, thereby ensuring a locking effect. Furthermore, the elastic portion 7 also facilitates the reset of the locking block 5 after unlocking.

[0063] In terms of detailed structure, Figures 5 to 7 The insertion portion includes a slot 201 provided on one of the locking block 5 and the sliding member 2, and a tongue 501 provided on the other. The slot 201 and tongue 501 are simple in structure, and their cooperation provides a good insertion effect. In some embodiments, the slot 201 is provided at the bottom of the left end of the sliding member 2, and the tongue 501 is provided at the top of the left end of the locking block 5. To facilitate the insertion of the tongue 501 into the slot 201, a guide surface 505 can be provided on the tongue 501 to guide its insertion into the slot 201, and a guide mating surface 203 is provided on the wall of the slot 201 to abut against the guide surface 505.

[0064] During insertion of the tongue 501 into the slot 201, the abutting engagement between the guide surface 505 and the guide mating surface 203 facilitates improved insertion stability and convenience. Alternatively, the tongue 501 can be positioned on the slider 2, and the slot 201 on the locking block 5; in this case, the two can also achieve a better insertion fit. Furthermore, an elastic block 204 can be positioned on the other sidewall of the slot 201, opposite the guide mating surface 203, to prevent the tongue 501 and slot 201 from colliding and causing noise and wear. In practice, the elastic block 204 can be made of a material with an elastic, cushioning effect, such as rubber. The provision of the elastic block 204 also enhances the stability of the tongue 501 and slot 201 during insertion.

[0065] The elastic portion 7 in this embodiment is preferably disposed below the locking block 5 to apply an upward force to the locking block 5, thereby causing the tongue 501 to have a tendency to remain inserted in the slot 201. Figure 4 As shown in FIG, the elastic portion 7 in this embodiment includes a connecting block 701 hingedly connected to the locking block 5, and an elastic member 702 provided between the connecting block 701 and the base 1. Under the action of the elastic member 702, the insertion portion inserts and connects the locking block 5 to the sliding member 2. The connection block 701 hingedly connected to the locking block 5 and the elastic member 702 are provided here to improve the elastic pushing effect of the elastic portion 7 on the locking block 5, thereby improving the insertion effect between the locking block 5 and the sliding member 2.

[0066] Specifically, a long, narrow retaining groove 502 is provided on one side of the locking block 5, with at least a portion of the connecting block 701 positioned within the retaining groove 502. The retaining groove 502 is located at the bottom of the locking block 5, midway along its length. The connecting block 701 is hingedly connected to the retaining groove 502 via a seventh hinge axis 704, which effectively enhances the force applied to the locking block 5. A mounting block 703 is provided on the base 1, positioned below the locking block 5. The elastic member 702 comprises a spring connected between the mounting block 703 and the connecting block 701.

[0067] In this embodiment, by hingedly connecting the connecting block 701 in the limiting groove 502, the elastic member 702 can remain in a straight state during the rotation of the locking block 5, and is not prone to problems such as tilting, thereby ensuring the elastic pushing effect and stability of the elastic member 702 on the locking block 5.

[0068] In order to improve the exquisiteness and aesthetics of the connection mechanism, Figure 1As shown in , a shielding plate 102 can also be provided on the base 1. Specifically, a plurality of spacer blocks 101 are provided on the base 1 at intervals, and the shielding plate 102 is connected to the base 1 by bolts passing through the shielding plate 102 and the base 1. In this embodiment, the sliding member 2, the locking block 5, the connecting rod 6, the transmission rod 8 and the elastic portion 7 are all located in the installation space defined between the shielding plate 102 and the base 1. Among them, the hanging groove 100 is specifically defined by the second part 302 and the corresponding spacer block 101. The top of the trigger block 4 in the connecting mechanism and the second part 302 of the two hooks 3 are both located outside the installation space of the shielding plate 102 to ensure that the trigger block 4 can be triggered by an external force and the two hooks can be connected to the traction rope hook.

[0069] In addition, to facilitate the connection between the base 1 and the towed object or the tractor, a connecting plate 10 extending along its own length is provided on one side of the base 1. Both ends of the connecting plate 10 have end portions 1001 extending out of the base 1.

[0070] Specifically, bolts pass through the bottom of the chute 103 and connect to the connecting plate 10, thereby connecting the base 1 and the connecting plate 10. Bolts pass through the end portion 1001 and connect to the towed object or tractor, thereby mounting the base 1 on the towed object or tractor. The combined connection of the connecting plate 10, base 1, and bolts facilitates installation and removal of the connection mechanism and offers excellent operational convenience.

[0071] In the initial state of the connecting mechanism in this embodiment, Figure 5 As shown in , when the trigger block 4 receives the external trigger force, the trigger block 4 rotates counterclockwise, the connecting rod 6 moves downward, and drives the locking block 5 to rotate downward, the elastic member 702 is compressed until the tongue 501 is disengaged from the slot 201. Under the action of the traction rope pushing, the hook member 3 rotates and drives the sliding member 2 to slide to the right through the transmission rod 8 until the traction rope is detached from the hook member 3. At this time, the tractor and the towed member are in a separated state.

[0072] After the external triggering force and the force of the traction rope disappear, the hook member 3 is manually driven to rotate in the opposite direction, and the sliding member 2 is driven to slide to the left through the transmission rod 8. At the same time, the elastic member 702 applies an upward pushing force to the locking block 5 until the tongue 501 is inserted into the slot 201 again, and the locking block 5 and the sliding member 2 are in a locked state again.

[0073] Compared with the connection mechanism in the prior art, which has the problem of low separation accuracy due to unstable factors such as signal delay in the electrical sensor, signal line disconnection, power failure, etc., the connection mechanism described in this embodiment adopts a purely mechanical structure, which is conducive to improving the separation accuracy between the tractor and the towed part, and the structure of the entire connection mechanism is simple and easy to arrange and implement.

[0074] In addition, this embodiment also relates to a vehicle collision test system, including the connection mechanism as described above, and a push member 9 provided at a preset collision position.

[0075] like Figure 8 and Figure 9 As shown in FIG, the push member 9 in this embodiment has a push surface 901 for pushing against the trigger unit, and the push surface 901 is inclined downward along the pulling direction. In specific implementation, the push member 9 is installed at a predetermined separation position for vehicle collision, and the separated vehicle is moved to the collision position. The predetermined separation position and the collision position should be as close as possible to improve the accuracy of the collision test.

[0076] In this embodiment, the connecting mechanism is located below the push member 9. When the tractor tows the vehicle to the right, the roller 401 on the top of the trigger block 4 contacts the left end of the push surface 901. As the vehicle moves to the right, the push surface 901 applies a downward external triggering force to the roller 401, which in turn drives the trigger block 4 to rotate downward. This, in turn, drives the locking block 5 downward via the connecting rod 6 until the tongue 501 disengages from the slot 201, releasing the lock between the locking block 5 and the sliding member 2.

[0077] Since the traction rope is always in a taut state, the hook member 3 rotates under the tension of the traction rope (the tension direction is opposite to the traction direction) after being unlocked, and the traction rope is disengaged from the hanging groove 100, so that the traction rope is separated from the connecting mechanism, thereby completing the mechanical separation of the colliding vehicle and the tractor.

[0078] Here, the push surface 901 on the push member 9 is inclined downward along the traction direction, which is conducive to triggering the trigger unit and unlocking the locking unit, so that the traction rope is disengaged from the hanging groove 100, thereby facilitating the separation of the tractor and the car. In addition, the push surface 901 has a simple structure and is easy to arrange and implement, which is conducive to reducing the cost of the vehicle collision test system.

[0079] The vehicle collision test system described in this embodiment facilitates the separation of the tractor and the vehicle by providing the above-mentioned connecting mechanism and the push member 9 provided at the preset collision position, and can ensure the complete separation of the tractor at the fixed separation point.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A connecting mechanism for connecting a tractor and a towed object via a traction rope, characterized in that: The connecting mechanism comprises a base (1), a sliding member (2) slidably arranged on the base (1), a hook member (3) transmission-connected to the sliding member (2), a trigger unit arranged on the base (1), and a locking unit for locking the sliding member (2); In the locked state, the hooking member (3) and the base (1) form a hanging groove (100) for hooking the traction rope, and the trigger unit is triggered to move relative to the base (1) and unlock the locking unit, so that the traction rope pushes the hooking member (3) to move and escape from the hanging groove (100).

2. The connecting mechanism according to claim 1, wherein: The trigger unit comprises a trigger block (4) and a locking block (5) respectively arranged on both sides of the sliding member (2), and a connecting rod (6) hinged between the trigger block (4) and the locking block (5); The trigger block (4) and the locking block (5) are both hinged on the base (1), and the locking unit is provided between the locking block (5) and the sliding member (2).

3. The connecting mechanism according to claim 2, wherein: The locking unit comprises an inserting portion provided between the locking block (5) and the sliding member (2), and an elastic portion (7) provided between the locking block (5) and the base (1); Under the action of the elastic portion (7), the insertion portion inserts and connects the locking block (5) and the sliding member (2).

4. The connecting mechanism according to claim 3, characterized in that: The insertion portion comprises a slot (201) provided on one of the locking block (5) and the sliding member (2), and an insertion tongue (501) provided on the other of the two; and / or, The elastic portion (7) comprises a connecting block (701) hingedly connected to the locking block (5), and an elastic member (702) provided between the connecting block (701) and the base (1), and under the action of the elastic member (702), the insertion portion inserts and connects the locking block (5) and the sliding member (2).

5. The connecting mechanism according to claim 4, characterized in that: A long strip-shaped limiting groove (502) is provided on one side of the locking block (5), and at least a portion of the connecting block (701) is located in the limiting groove (502).

6. The connecting mechanism according to claim 2, wherein: The trigger block (4) is rotatably provided with a roller (401) at one end away from the sliding member (2), and the roller (401) is used to receive an external trigger force; and / or, The trigger block (4) is triangular in shape and is connected to the base (1) and the locking block (5) through two corners.

7. The connection mechanism according to claim 1, characterized in that: The hooking members (3) are two and are arranged oppositely on both sides of the sliding member (2).

8. The connecting mechanism according to any one of claims 1 to 7, characterized in that: The hook member (3) is rotatably mounted on the base (1) and is connected to the sliding member (2) via a transmission rod (8), and the transmission rod (8) is hinged between the hook member (3) and the sliding member (2).

9. A vehicle collision test system, characterized in that: The invention comprises the connecting mechanism according to any one of claims 1 to 8, and a push member (9) provided at a preset collision position.

10. The vehicle collision test system according to claim 9, characterized in that: The pushing member (9) has a pushing surface (901) for pushing the trigger unit, and along the pulling direction, the pushing surface (901) is inclined downward.

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