Bearing frame for cage trolley

Abstract

The utility model relates to the technical field of express logistics, and discloses a bearing frame for a cage trolley. The bearing frame comprises a frame body, a front support, a bottom reinforcing frame and a rear support. The front support is fixed to the front portion of the frame body. The bottom reinforcing frame is fixed to the outer side of the bottom of the frame body, and the rear end of the bottom reinforcing frame extends out of the frame body. The rear support is located on the rear portion of the frame body, and the rear support is rotationally connected with the rear end of the bottom reinforcing frame through a pin shaft and used for enabling the rear support to turn over between the loading position and the unloading position. And the rear support is fixedly connected with the rear end of the bottom reinforcing frame through a bolt after being overturned in place. Manual unloading of the cage trolley under the power-off state is achieved, and logistics efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of express logistics, and in particular to a load-bearing frame for a cage truck. Background Art

[0002] The logistics industry is becoming more and more unmanned, and cage trucks are being used more and more widely in the logistics industry. The current logistics vehicles used to transport cage trucks are usually equipped with a load-bearing frame and a flipping mechanism on the body platform. The load-bearing frame is used to load the cage truck, and the flipping mechanism is used to drive the load-bearing frame to flip, so as to realize the automatic loading and unloading of the cage truck. It can be seen that when unloading the cage truck, the existing logistics truck needs to control the flipping of the load-bearing frame by electronic control in order to automatically unload the goods. However, if there is an unexpected power outage or battery power supply during transportation, the cage truck will be unable to unload the goods, which will seriously affect the efficiency of logistics.

[0003] Therefore, there is an urgent need for a load-bearing frame for a cage vehicle to solve the above technical problems. Utility Model Content

[0004] Based on the above, the purpose of the utility model is to provide a load-bearing frame for a cage truck, which can realize manual unloading of the cage truck in a power-off state and improve logistics efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a load-bearing frame for a cage vehicle, comprising:

[0007] Framework body;

[0008] A front support fixed to the front of the frame body;

[0009] A bottom reinforcement frame is fixed to the outer side of the bottom of the frame body, and the rear end of the bottom reinforcement frame extends out of the frame body;

[0010] The rear support is located at the rear of the frame body, and is rotatably connected to the rear end of the bottom reinforcement frame via a pin shaft, so as to enable the rear support to flip between a loading position and an unloading position; after the rear support is flipped into place, it is fixedly connected to the rear end of the bottom reinforcement frame via bolts.

[0011] In some possible embodiments, a first connecting tube is provided at the rear end of the bottom reinforcement frame, and the first connecting tube extends vertically downward from the bottom of the bottom reinforcement frame; a first pin hole is provided on the first connecting tube, and a second pin hole is provided at the lower end of the rear support, and the pin shaft is installed in the first pin hole and the second pin hole.

[0012] In some possible embodiments, a first connecting hole is further provided on the first connecting tube, and the first connecting hole is located below the first pin hole. A first fixing hole opposite to the first connecting hole is also provided at the lower end of the rear support, and a first bolt passes through the first connecting hole and is fastened to the first fixing hole.

[0013] In some possible implementations, a second connection hole is provided at the rear end of the bottom reinforcement frame, and a second fixing hole opposite to the second connection hole is further provided on the rear support, and a second bolt passes through the second connection hole and is fastened to the second fixing hole.

[0014] In some possible embodiments, an inclined rear reinforcing rod is fixed to a side of the rear support away from the front support, a second connecting tube is fixed to the bottom of the rear reinforcing rod, and the second connecting tube is vertical and fixed to the rear support; a third connecting hole is provided at the rear end of the bottom reinforcing frame, a third fixing hole is provided on the second connecting tube and is opposite to the third connecting hole, and a third bolt passes through the third connecting hole and is fastened to the third fixing hole.

[0015] In some possible implementations, a shaft sleeve is disposed in each of the first pin hole and the second pin hole, for cooperating with the pin shaft;

[0016] The first connecting hole, the second connecting hole and the third connecting hole are each provided with a shaft sleeve for cooperating with a corresponding bolt;

[0017] The first fixing hole, the second fixing hole and the third fixing hole are each provided with a threaded sleeve, and the threaded sleeve is provided with an internal thread for being threadedly connected with a corresponding bolt.

[0018] In some possible implementations, after the first bolt, the second bolt, and the third bolt pass through the corresponding fixing holes, they are further connected with anti-loosening nuts.

[0019] In some possible implementations, a first reinforcing rib is provided between the first connecting tube and the rear end of the bottom reinforcing frame, and a second reinforcing rib is provided between the second connecting tube and the rear support; and / or,

[0020] A reserved hole is also provided at the rear end of the bottom reinforcement frame, and the reserved hole, the first connecting hole and the third connecting hole are distributed along the same circumference with the axis of the first pin hole as the center, and the reserved hole and the third connecting hole are symmetrically arranged relative to the center line connecting the first pin hole and the first connecting hole; when the rear support rotates to the unloading position, the fourth bolt passes through the reserved hole and is fixedly connected to the first fixing hole, and the fifth bolt passes through the first connecting hole and is fixedly connected to the third fixing hole.

[0021] In some possible implementations, a front reinforcement frame is further fixed to the front outer side of the front support; and / or,

[0022] A limit reinforcing rod is connected between the frame body and the front support, and the limit reinforcing rod is arranged obliquely relative to the front support; and / or,

[0023] A left limit frame and a right limit frame are arranged on the left and right sides of the rear of the frame body; and / or,

[0024] The frame body, the front support and the rear support form a C-shaped frame structure, and a plurality of protective blocks are fixed on the inner side of the C-shaped frame structure.

[0025] In some possible implementations, a first connecting plate is further provided at the bottom of the frame body near the front support, the first connecting plate is fixed to the frame body, a first mounting hole is provided on the first connecting plate for mounting a caster bracket, and the caster bracket is used to mount a caster; and / or,

[0026] A second connecting plate is further provided at the bottom of the frame body, the second connecting plate is fixed to the bottom reinforcing frame, and a second mounting hole is provided on the second connecting plate for mounting the first bearing seat; and / or,

[0027] A third mounting hole is provided at the bottom of the bottom reinforcement frame, and the third mounting hole is used to mount a second bearing seat; and / or,

[0028] A trigger corner block is also provided at the bottom of the frame body. The trigger corner block is in a triangular structure, one right-angled side of which is fixed on the frame body, and the hypotenuse is used to contact with the target sensor for in-place detection.

[0029] The beneficial effects of the utility model are:

[0030] The load-bearing frame for a cage car provided by the utility model has a main load-bearing function as a frame body; the front support is used to prevent the cage car from sliding forward, and supports from the front end of the cage car to prevent the cage car from escaping from the support range of the frame body; the rear support is used to prevent the cage car from sliding backward, and supports from the rear end of the cage car, and can play a main supporting role in the unloading state; the bottom reinforcement frame is arranged on the outside of the frame body, and together forms a two-layer structure, which plays a reinforcing role on the frame body; the above arrangement effectively improves the overall structural strength of the load-bearing frame. In addition, the rear support is rotatably connected with the rear end of the bottom reinforcement frame through a pin shaft, so that the rear support can be flipped between the loading position and the unloading position. During transportation, the rear support and the bottom reinforcement frame are fastened by bolts to prevent the cage car from falling; when unloading is required, the bolts are removed, leaving only the pin shaft, and then the rear support is rotated to the unloading position, and then the bolts are used to fasten, and then the cage car is manually pulled down along the slope formed by the rear support, and the manual unloading function can be realized. The utility model realizes the manual unloading of the cage car in the power-off state, and improves the logistics efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a front structural schematic diagram of a load-bearing frame for a cage vehicle provided by an embodiment of the utility model, wherein the rear support is in a loading position;

[0032] Figure 2 yes Figure 1 A partial enlarged view of the center A (showing the bolt and the pin);

[0033] Figure 3 yes Figure 1 A partial enlarged view of point A in the middle (bolts and pins are not shown);

[0034] Figure 4 It is a schematic diagram of the back structure of a load-bearing frame for a cage vehicle provided by an embodiment of the utility model, wherein the rear support is in a loading position;

[0035] Figure 5 It is a front structural schematic diagram of a load-bearing frame for a cage vehicle provided by an embodiment of the utility model, wherein the rear support is in a unloading position;

[0036] Figure 6 is a structural schematic diagram of a logistics vehicle provided by an embodiment of the utility model, wherein the rear support is in a loading position;

[0037] Figure 7 It is a structural schematic diagram of a logistics vehicle provided by an embodiment of the utility model, wherein the rear support is in an unloading position.

[0038] In the figure:

[0039] 100, logistics vehicle; 200, cage vehicle;

[0040] 1. Frame body; 11. First connecting plate; 12. Second connecting plate; 13. Trigger angle block; 2. Front support; 3. Bottom reinforcement frame; 301. Second connecting hole; 302. Third connecting hole; 31. First connecting tube; 311. First pin hole; 312. First connecting hole; 32. First reinforcing rib; 33. Reserved hole; 34. Third mounting hole; 4. Rear support; 401. Second pin hole; 402. First fixing hole; 403. Second fixing hole; 41. Rear reinforcing rod; 42. Second connecting tube; 421. Third fixing hole; 43. Second reinforcing rib; 5. Pin shaft; 61. First bolt; 62. Second bolt; 63. Third bolt; 64. Fourth bolt; 65. Fifth bolt; 66. Anti-loosening nut; 7. Front reinforcement frame; 8. Limit reinforcing rod; 91. Left limit frame; 92. Right limit frame; 10. Protective block. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] In the description of the present utility model, the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning. The front-back direction in the present utility model refers to the vertical direction between the head and the tail of the logistics vehicle, where the head is in the front and the tail is in the back.

[0045] As Figure 1-Figure 7 shown, this embodiment provides a loading frame for a cage truck. The loading frame is arranged on the logistics vehicle 100 and is used for loading the cage truck 200 to realize the transportation of the cage truck 200 by the logistics vehicle 100. In this embodiment, the "front" of the loading frame refers to the direction close to the head of the logistics vehicle 100, and the "back" of the loading frame refers to the direction close to the tail of the logistics vehicle 100.

[0046] The loading frame provided in this embodiment includes a frame body 1, a front support 2, a bottom strengthening frame 3, and a rear support 4. Optionally, the frame body 1 is welded by multiple profiles and has an overall "eye" - shaped structure, playing a major load - bearing role. The front support 2 is fixed to the front part of the frame body 1, used to block the forward sliding of the cage truck 200, prevent the cage truck 200 from getting out of the support range of the frame body 1, and can support the cage truck 200 from the front end. Optionally, the front support 2 is welded by multiple profiles to form a frame structure, and the front support 2 is fixed to the frame body 1 by welding. The bottom strengthening frame 3 is fixed to the outer side of the bottom of the frame body 1, and together with the frame body 1, they form a two - layer structure, effectively increasing the strength of the frame body 1. The rear end of the bottom strengthening frame 3 extends out of the frame body 1 to facilitate connection with the rear support 4. The rear support 4 is located at the rear part of the frame body 1, and the rear support 4 is used to block the backward sliding of the cage truck 200 and can support the cage truck 200 from the rear end. The above settings effectively increase the overall structural strength of the loading frame.

[0047] The rear support 4 is rotatably connected to the rear end of the bottom reinforcement frame 3 through a pin 5, which is used to flip the rear support 4 between the loading position and the unloading position. When the rear support 4 is flipped into place, it is fixedly connected to the rear end of the bottom reinforcement frame 3 by bolts. It should be noted that the loading position of this embodiment refers to the state when the rear support 4, the frame body 1, and the front support 2 together form a space for loading the cage car 200; the unloading position refers to the state when the rear support 4 is flipped backward relative to the bottom reinforcement frame 3 to tilt downward, so that the cage car 200 can slide down along the rear support 4. Preferably, the rear support 4 of this embodiment is perpendicular to the bottom reinforcement frame 3 in the loading position; the rear support 4 forms an obtuse angle with the bottom reinforcement frame 3 in the unloading position, so that it can play a major supporting role during unloading. The load-bearing frame provided in this embodiment is fastened with bolts between the rear support 4 and the bottom reinforcement frame 3 during transportation to prevent the cage car 200 from falling; when unloading is required, the bolts are removed, leaving only the pin shaft 5, and then the rear support 4 is rotated to the unloading position, and then the bolts are used to tighten, and then the cage car 200 is manually pulled down along the slope formed by the rear support 4 to realize the manual unloading function. This embodiment realizes manual unloading of the cage car 200 in a power-off state, thereby improving logistics efficiency.

[0048] In this embodiment, the rear end of the bottom reinforcement frame 3 is further provided with a first connecting tube 31, which extends vertically downward from the bottom of the bottom reinforcement frame 3, and is provided with a first pin hole 311. The lower end of the rear support 4 (in the loading state) is provided with a second pin hole 401, and the pin shaft 5 is installed through the first pin hole 311 and the second pin hole 401, so as to realize the rotation of the rear support 4 relative to the bottom reinforcement frame 3. Specifically, the first connecting tube 31 is a rectangular tube, and one end thereof is fixed to the bottom reinforcement frame 3 by welding. Two first reinforcing ribs 32 are also provided between the front and rear sides of the first connecting tube 31 and the bottom reinforcement frame 3 to increase the strength of the first connecting tube 31.

[0049] Furthermore, a first connecting hole 312 is provided on the first connecting tube 31, and the first connecting hole 312 is located below the first pin hole 311. The lower end of the rear support 4 (in the loading state) is also provided with a first fixing hole 402 which is opposite to the first connecting hole 312. The first bolt 61 passes through the first connecting hole 312 and is fastened to the first fixing hole 402, thereby achieving fixation between the rear support 4 and the first connecting tube 31; and the first bolt 61 and the pin shaft 5 are both provided on the first connecting tube 31, which effectively prevents the rear support 4 from rotating around the pin shaft 5.

[0050] Furthermore, the rear end of the bottom reinforcement frame 3 is provided with a second connection hole 301, and the lower end of the rear support 4 (in the loading state) is also provided with a second fixing hole 403 opposite to the second connection hole 301, and the second bolt 62 passes through the second connection hole 301 and is fastened to the second fixing hole 403, thereby achieving the fixation between the bottom reinforcement frame 3 and the rear support 4. In this embodiment, the second bolt 62 is located above the pin 5, and the first bolt 61 is located below the pin 5, so that the rear support 4 can be fixed from both the upper and lower sides of the pin 5, thereby increasing the fixing reliability.

[0051] Furthermore, an inclined rear reinforcing rod 41 is fixed to the side of the rear support 4 away from the front support 2 to increase the strength of the rear support 4 and ensure that the rear support 4 can stably support the cage car 200 in the unloading state. A second connecting pipe 42 is fixed to the bottom (in the loading state) of the rear reinforcing rod 41. The second connecting pipe 42 is a rectangular tube, which is perpendicular to the rear support 4 and fixed to the rear support 4 by welding. A second reinforcing rib 43 is arranged between the second connecting pipe 42 and the rear support 4 to increase the strength of the second connecting pipe 42. A third connecting hole 302 is arranged at the rear end of the bottom reinforcing frame 3, and a third fixing hole 421 is arranged on the second connecting pipe 42, which is opposite to the third connecting hole 302. The third bolt 63 passes through the third connecting hole 302 and is fastened to the third fixing hole 421, so that the bottom reinforcing frame 3 and the second connecting pipe 42 are fixed. In this embodiment, in the loading state, the rear support 4 and the bottom reinforcing frame 3 are fixed by three bolts, which effectively improves the reliability of the fixation.

[0052] It should be noted that if the weight of the cargo in the cage truck 200 exceeds the allowable strength of the rear support 4, a corresponding support structure can be added to the rear frame of the logistics vehicle 100 to ensure that after the rear support 4 is flipped to the unloading position, it can just rest against the support structure, so that the cage truck 200 can unload normally.

[0053] Optionally, in this embodiment, the first pin hole 311 and the second pin hole 401 are both provided with shaft sleeves, and the pin shaft 5 is rotatably provided in the above two shaft sleeves. The first connecting hole 312, the second connecting hole 301 and the third connecting hole 302 are both provided with shaft sleeves, the first fixing hole 402, the second fixing hole 403 and the third fixing hole 421 are both provided with threaded sleeves, and the threaded sleeves are provided with internal threads. The first bolt 61, the second bolt 62 and the third bolt 63 pass through the corresponding shaft sleeves respectively and are fixedly connected with the corresponding threaded sleeves respectively. Furthermore, after the first bolt 61, the second bolt 62 and the third bolt 63 pass through the corresponding fixing holes, they are also connected with anti-loosening nuts 66, which further increase the reliability of fixation and can prevent accidents caused by loosening of bolts due to vibration of the mechanism during transportation of the cage car 200.

[0054] Furthermore, in this embodiment, a reserved hole 33 is also provided at the rear end of the bottom reinforcement frame 3. When the rear support 4 is in the loading position, the reserved hole 33 is not used; when the rear support 4 rotates to the unloading position, the reserved hole 33 is used to install the fourth bolt 64. Specifically, the reserved hole 33, the first connection hole 312 and the third connection hole 302 of this embodiment are distributed along the same circumference with the axis of the first pin hole 311 as the center, and the reserved hole 33 and the third connection hole 302 are symmetrically arranged relative to the central line connecting the first pin hole 311 and the first connection hole 312. In this way, when the rear support 4 rotates to the unloading position, the reserved hole 33 can correspond to the position of the first fixing hole 402, and the fourth bolt 64 passes through the reserved hole 33 and is fixedly connected to the first fixing hole 402; at the same time, the first connection hole 312 can correspond to the position of the third fixing hole 421, and the fifth bolt 65 passes through the first connection hole 312 and is fixedly connected to the third fixing hole 421, thereby achieving the fixation of the bottom reinforcement frame 3 and the rear support 4. Preferably, a shaft sleeve is also provided in the reserved hole 33 for cooperating with the fourth bolt 64 .

[0055] The load-bearing frame provided in this embodiment is fastened by the first bolt 61, the second bolt 62, and the third bolt 63 when the rear support 4 is in the loading position, and the anti-loosening nut 66 is connected to the tail of each bolt, which effectively ensures the safety of the cage car 200 during transportation; when unloading is required, all the bolts and anti-loosening nuts 66 are removed, leaving only the pin shaft 5, and then the rear support 4 is rotated to the unloading position; when the rear support 4 is in the unloading position, it is fastened with the fourth bolt 64 and the fifth bolt 65 (the anti-loosening nut may not be installed at this time), and the connection is convenient and reliable; thereafter, the cage car 200 is manually pulled down along the slope formed by the rear support 4 to realize the manual unloading function.

[0056] Optionally, a front reinforcement frame 7 is also fixed to the front outer side of the front support 2, which together with the front support 2 forms a two-layer structure, effectively increasing the strength of the front support 2. Two limiting reinforcement rods 8 are also connected between the left and right sides of the frame body 1 and the left and right sides of the front support 2. The limiting reinforcement rods 8 are inclined relative to the front support 2, that is, the limiting reinforcement rods 8 form a triangular structure with the frame body 1 and the front support 2. On the one hand, the above two limiting reinforcement rods 8 play a role in limiting the left and right directions of the cage car 200, and on the other hand, they can firmly pull the front support 2 and the frame body 1 together to prevent the front support 2 from being collided and causing structural deformation when the vehicle brakes. In addition, a left limiting frame 91 and a right limiting frame 92 are also provided on the left and right sides of the rear of the frame body 1 to prevent the cage car 200 from moving in the left and right directions.

[0057] In this embodiment, the frame body 1, the front support 2 and the rear support 4 form a C-shaped frame structure, and a plurality of protective blocks 10 are fixed to the inner side of the C-shaped frame structure. The protective blocks 10 can effectively protect the appearance of the cage trolley 200 on the one hand, and can reduce the impact of the cage trolley 200 on the load-bearing frame during the starting and braking process on the other hand. Preferably, the material of the protective blocks 10 can be selected from polyurethane or rubber materials. Further preferably, the protective blocks 10 are provided with countersunk holes, which can be fixed to the load-bearing frame by bolts.

[0058] Optionally, two first connecting plates 11 are further provided at the bottom of the frame body 1 near the front support 2. The first connecting plates 11 are fixed to the frame body 1 by welding, and the first connecting plates 11 are provided with a first mounting hole for installing other parts. Specifically, the two first connecting plates 11 of this embodiment are respectively used to install two caster brackets, and casters are installed on the caster brackets to realize the overall movement of the load-bearing frame. A reinforcing rib plate is provided between the first connecting plate 11 and the frame body 1 to ensure the connection strength between the two. Optionally, a second connecting plate 12 is further provided at the bottom of the frame body 1, and the second connecting plate 12 is fixed to the bottom reinforcement frame 3 by welding. The second connecting plate 12 is provided with a second mounting hole for installing a first bearing seat, and the first bearing seat can realize the hinge connection between the load-bearing frame and the telescopic drive member on the logistics vehicle 100. Optionally, a third mounting hole 34 is provided at the bottom of the bottom reinforcement frame 3, and the third mounting hole 34 is used to install a second bearing seat, and the second bearing seat can realize the hinge connection between the load-bearing frame and the rotating shaft on the logistics vehicle 100. In addition, a trigger corner block 13 is provided at the bottom of the frame body 1. The trigger corner block 13 has a triangular structure. A right-angled side of the trigger corner block 13 is fixed on the frame body 1, and the hypotenuse is used to contact the target sensor to trigger the target sensor, thereby realizing the in-place detection function.

[0059] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A load-bearing frame for a cage vehicle, characterized in that: include: Frame body (1); A front support (2) fixed to the front portion of the frame body (1); A bottom reinforcement frame (3) is fixed to the outer side of the bottom of the frame body (1), and the rear end of the bottom reinforcement frame (3) extends out of the frame body (1); A rear support (4) is located at the rear of the frame body (1), and is rotatably connected to the rear end of the bottom reinforcement frame (3) via a pin shaft (5) so as to enable the rear support (4) to flip between a loading position and an unloading position; after the rear support (4) is flipped into place, it is fixedly connected to the rear end of the bottom reinforcement frame (3) via bolts.

2. The load-bearing frame for a cage vehicle according to claim 1, characterized in that: A first connecting tube (31) is provided at the rear end of the bottom reinforcing frame (3), and the first connecting tube (31) extends vertically downward from the bottom of the bottom reinforcing frame (3); a first pin hole (311) is provided on the first connecting tube (31), a second pin hole (401) is provided at the lower end of the rear support (4), and the pin shaft (5) is installed in the first pin hole (311) and the second pin hole (401).

3. The load-bearing frame for a cage vehicle according to claim 2, characterized in that: The first connecting tube (31) is also provided with a first connecting hole (312), the first connecting hole (312) being located below the first pin hole (311), and the lower end of the rear support (4) is also provided with a first fixing hole (402) which is opposite to the first connecting hole (312), and the first bolt (61) passes through the first connecting hole (312) and is fastened to the first fixing hole (402).

4. The load-bearing frame for a cage vehicle according to claim 3, characterized in that: A second connection hole (301) is provided at the rear end of the bottom reinforcement frame (3), and a second fixing hole (403) opposite to the second connection hole (301) is also provided on the rear support (4), and a second bolt (62) passes through the second connection hole (301) and is fastened to the second fixing hole (403).

5. The load-bearing frame for a cage vehicle according to claim 4, characterized in that: An inclined rear reinforcing rod (41) is fixed to a side of the rear support (4) away from the front support (2); a second connecting tube (42) is fixed to the bottom of the rear reinforcing rod (41); the second connecting tube (42) is vertical and fixed to the rear support (4); a third connecting hole (302) is provided at the rear end of the bottom reinforcing frame (3); a third fixing hole (421) is provided on the second connecting tube (42) and is opposite to the third connecting hole (302); a third bolt (63) passes through the third connecting hole (302) and is fastened to the third fixing hole (421).

6. The load-bearing frame for a cage vehicle according to claim 5, characterized in that: A shaft sleeve is disposed in each of the first pin hole (311) and the second pin hole (401) for cooperating with the pin shaft (5); The first connecting hole (312), the second connecting hole (301) and the third connecting hole (302) are each provided with a shaft sleeve for cooperating with a corresponding bolt; The first fixing hole (402), the second fixing hole (403) and the third fixing hole (421) are each provided with a threaded sleeve, and the threaded sleeve is provided with an internal thread for being threadedly connected with a corresponding bolt.

7. The load-bearing frame for a cage vehicle according to claim 5, characterized in that: After the first bolt (61), the second bolt (62) and the third bolt (63) pass through the corresponding fixing holes, they are also connected with anti-loosening nuts (66).

8. The load-bearing frame for a cage vehicle according to claim 5, characterized in that: A first reinforcing rib (32) is provided between the first connecting tube (31) and the rear end of the bottom reinforcing frame (3), and a second reinforcing rib (43) is provided between the second connecting tube (42) and the rear support (4); and / or, The rear end of the bottom reinforcement frame (3) is also provided with a reserved hole (33), and the reserved hole (33), the first connecting hole (312) and the third connecting hole (302) are distributed along the same circumference with the axis of the first pin hole (311) as the center, and the reserved hole (33) and the third connecting hole (302) are symmetrically arranged relative to the center line connecting the first pin hole (311) and the first connecting hole (312); when the rear support (4) rotates to the unloading position, the fourth bolt (64) passes through the reserved hole (33) and is fixedly connected to the first fixing hole (402), and the fifth bolt (65) passes through the first connecting hole (312) and is fixedly connected to the third fixing hole (421).

9. The load-bearing frame for a cage vehicle according to claim 1, characterized in that: A front reinforcement frame (7) is also fixed to the front outer side of the front support (2); and / or, A limit reinforcing rod (8) is connected between the frame body (1) and the front support (2), and the limit reinforcing rod (8) is arranged to be inclined relative to the front support (2); and / or, A left limiting frame (91) and a right limiting frame (92) are provided on the left and right sides of the rear of the frame body (1); and / or, The frame body (1), the front support (2) and the rear support (4) form a C-shaped frame structure, and a plurality of protective blocks (10) are fixed on the inner side of the C-shaped frame structure.

10. The load-bearing frame for a cage vehicle according to claim 1, characterized in that: A first connecting plate (11) is further provided at the bottom of the frame body (1) near the front support (2), the first connecting plate (11) being fixed to the frame body (1), the first connecting plate (11) being provided with a first mounting hole for mounting a caster bracket, the caster bracket being used for mounting a caster; and / or, The bottom of the frame body (1) is further provided with a second connecting plate (12), the second connecting plate (12) is fixed to the bottom reinforcing frame (3), and the second connecting plate (12) is provided with a second mounting hole for mounting the first bearing seat; and / or, A third mounting hole (34) is provided at the bottom of the bottom reinforcement frame (3), and the third mounting hole (34) is used to mount a second bearing seat; and / or, A trigger angle block (13) is also provided at the bottom of the frame body (1). The trigger angle block (13) is in a triangular structure, one of the right-angled sides of which is fixed on the frame body (1), and the hypotenuse is used to contact the target sensor for in-position detection.

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