Locking device for rear door of refrigerator car

Abstract

The utility model discloses a locking device for back doors of a refrigerator car, which relates to the technical field of refrigerator cars and comprises a carriage body, two back door bodies are rotatably connected in the carriage body, two lock rods are rotatably connected to one side of each back door body, and two positioning blocks are fixedly mounted on one side of each back door body. Two supporting blocks are fixedly mounted on one side of the rear door body, the T-shaped plate can be parallel to the ground through mutual cooperation of the rear door body, the T-shaped plate, the connecting rod, the mounting plate and the torsional spring, and the T-shaped plate can be clamped in the supporting box through mutual cooperation of the rear door body, the T-shaped plate, the supporting box, the movable plate, the mounting column and the first spring. And then the rear door body is locked on one side of the compartment body, the situation that the rear door body collides with the two sides of the compartment body due to random rotation is avoided, the locking effect on the rear door body is achieved, and workers can conveniently use the compartment body and the rear door body.

Description

Technical Field

[0001] The utility model relates to the field of refrigerated trucks, in particular to a locking device for a rear door of a refrigerated truck. Background Art

[0002] Refrigerated trucks are closed vans used to maintain the temperature of frozen or fresh goods. They can be classified by manufacturer, chassis load capacity, and compartment type. The body of a refrigerated truck is equipped with insulation materials, and the compartment is equipped with cooling, heating, temperature measuring, and ventilation devices. It has three functions: refrigeration, heat preservation, and heating. Refrigerated trucks are often used to transport frozen foods, dairy products, vegetables and fruits, vaccines, and medicines, so that the health quality of various foods can be maintained. The staff will place the goods in the compartment for cold chain transportation.

[0003] After extensive searching, it was found that the refrigerated trucks in the prior art have problems in use. Since the staff will store the goods in the compartment of the refrigerated truck, when the staff opens the rear door to move the items in the compartment, the rear door is difficult to limit so that the rear door may rotate. The rotation of the rear door may hit the side of the compartment, causing the side of the compartment to be damaged due to the impact of the rear door, affecting the staff's use of the refrigerated truck. Therefore, based on the above search and in combination with the prior art, the utility model proposes a locking device for the rear door of a refrigerated truck to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a locking device for the rear door of a refrigerated truck to solve the problems raised in the above-mentioned background technology.

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

[0006] The locking device of the rear door of a refrigerated truck includes a vehicle body, two rear door bodies are rotatably connected inside the vehicle body, two locking rods are rotatably connected to one side of the rear door body, two positioning blocks are fixedly installed on one side of the rear door body, two supporting blocks are fixedly installed on one side of the rear door body, a locking assembly for locking the rear door bodies is provided on one side of the two supporting blocks, and an observation assembly for viewing the goods inside the vehicle body is provided on one side of the rear door body.

[0007] Furthermore, the locking assembly includes a mounting plate, which is fixedly mounted on one side of the two support blocks, and two mounting tubes are fixedly mounted on one side of the mounting plate. A T-shaped plate is provided on one side of the mounting plate, and connecting rods are fixedly mounted on both sides of the T-shaped plate, and the connecting rods are elastically connected to the mounting tubes. Support boxes are fixedly mounted on both sides of the carriage body, and a T-shaped hole is provided on one side of the support box, and the T-shaped plate is movably socketed with the T-shaped hole, and a movable plate is elastically connected to the inside of the support box.

[0008] Furthermore, the observation assembly includes two cover plates, and the two cover plates are slidably connected to one side of the two rear door bodies respectively, and an observation panel that can see the interior of the vehicle body is fixedly installed on one side of the rear door body.

[0009] Furthermore, two lock bodies are fixedly installed on one side of the carriage body, and lock heads are fixedly installed on the top and bottom surfaces of the lock rod, and the lock heads are movably connected to the lock bodies. The outer circular wall surface of the lock rod is rotatably connected to a cross plate, and a support frame is installed on one side of the rear door body, and the cross plate is movably connected to the support frame.

[0010] Furthermore, a clamping column is elastically connected to one side of the support frame, a clamping groove is provided on one side of the cross plate, and the clamping column is movably clamped with the clamping groove.

[0011] Furthermore, a first sealing frame is fixedly sleeved on the outer circular wall surface of the rear door body, and a plurality of second sealing frames are fixedly sleeved on the outside of the first sealing frame.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The rear door body, T-shaped plate, connecting rod, mounting plate and torsion spring cooperate with each other, so that the T-shaped plate can be parallel to the ground. The rear door body, T-shaped plate, support box, movable plate, mounting column and first spring cooperate with each other, so that the T-shaped plate can be clamped inside the support box, and then the rear door body is locked on one side of the car body, so that the rear door body is prevented from hitting the two sides of the car body due to random rotation, and the car body is prevented from being damaged by the impact of the rear door body, so as to achieve the locking effect of the rear door body, and it is convenient for the staff to use the car body and the rear door body.

[0014] 2. By cooperating with each other through the set cover plate, connecting block, rear door body, fixing groove, support rod and observation plate, the cover plate can be moved to the outside of the observation plate, and then the staff can check the goods inside the car body through the observation plate, avoiding the staff opening the rear door body to check the goods inside the car body to achieve the effect of observing the goods inside the car body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the second sealing frame structure of the utility model;

[0017] Figure 3 for Figure 2 Schematic diagram of the local structure of A;

[0018] Figure 4This is a schematic diagram of the support block structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the installation column structure of the utility model;

[0020] Figure 6 This is a schematic diagram of the placement block structure of the utility model.

[0021] In the figure: 1. Carriage body; 2. Rear door body; 3. Observation assembly; 4. Lock assembly; 5. Lock rod; 6. First sealing frame; 7. Second sealing frame; 8. Cover plate; 9. Lock head; 10. Lock body; 11. Observation plate; 12. Fixing groove; 13. Support rod; 14. Connecting block; 15. Mounting block; 16. Support ring; 17. Support tube; 18. Annular groove; 19. Mounting plate; 20. T-shaped plate; 21. Mounting tube; 22. Connecting rod; 23. Torsion spring; 24. Support block; 25. Support box; 26. Movable plate; 27. Mounting column; 28. First spring; 29. ​​T-shaped hole; 30. Placement block; 31. Cross plate; 32. Support frame; 33. Snap-in groove; 34. Snap-in column; 35. Second spring; 36. Positioning block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The locking device of the rear door of a refrigerated truck comprises a carriage body 1, wherein the interior of the carriage body 1 is rotatably connected to two rear door bodies 2 through a hinge, the carriage body 1 is a carriage of the refrigerated truck, one side of the rear door body 2 is rotatably connected to two locking rods 5, one side of the rear door body 2 is fixedly installed with two positioning blocks 36, one side of the positioning block 36 is fixedly installed with a support tube 17, an annular groove 18 is provided on the inner circular wall surface of the support tube 17, and two supporting rings 16 are fixedly sleeved on the outer circular wall surface of the locking rod 5, and the supporting ring 16 is rotatably connected with the annular groove 18. When a staff member rotates the locking rod 5, the supporting ring 16 rotates inside the annular groove 18 on the inner wall of the supporting tube 17, and the supporting ring 16, the supporting tube 17 and the annular groove 18 cooperate to support the rotation of the locking rod 5, one side of the rear door body 2 is fixedly installed with two supporting blocks 24, one side of the two supporting blocks 24 is provided with a locking assembly 4 for locking the rear door body 2, and one side of the rear door body 2 is provided with an observation assembly 3 for viewing the goods inside the carriage body 1;

[0024] The locking assembly 4 includes a mounting plate 19, which is fixedly mounted on one side of two support blocks 24. The support blocks 24 can support the mounting plate 19. Two mounting tubes 21 are fixedly mounted on one side of the mounting plate 19. A T-shaped plate 20 is provided on one side of the mounting plate 19. Connecting rods 22 are fixedly mounted on both sides of the T-shaped plate 20. The connecting rods 22 are elastically connected to the mounting tubes 21. The connecting rods 22 penetrate the mounting tubes 21. The outer circumferential wall of the connecting rod 22 is sleeved with a torsion spring 23. Both ends of the torsion spring 23 abut against the inner wall of the mounting tube 21. The torsion spring 23 can provide the T-shaped plate 20 with the required reset. Torsion, support boxes 25 are fixedly installed on both sides of the carriage body 1, a T-shaped hole 29 is opened on one side of the support box 25, the T-shaped plate 20 is movably connected with the T-shaped hole 29, the support box 25 is elastically connected with a movable plate 26 inside, a plurality of mounting posts 27 for limiting the movable plate 26 are fixedly installed inside the support box 25, the movable plate 26 is slidably connected with the mounting posts 27, the outer circular wall surface of the mounting posts 27 is movably connected with a first spring 28, one end of the first spring 28 is fixedly connected with one side of the movable plate 26, and the other end of the first spring 28 is fixedly connected with one side of the inner side of the support box 25;

[0025] Through the rear door body 2, the staff rotates the rear door body 2 outward to open the carriage body 1, and the staff rotates the T-shaped plate 20 upward. The T-shaped plate 20 rotates upward to drive the connecting rod 22 to rotate inside the mounting plate 19 and twist the torsion spring 23. The staff rotates the T-shaped plate 20 until the T-shaped plate 20 is parallel to the ground. The staff rotates the rear door body 2 outward 270 degrees until the T-shaped plate 20 on the side of the rear door body 2 passes through the T-shaped hole 29 on the support box 25 and enters the interior of the support box 25. The T-shaped plate 20 enters the interior of the support box 25 to squeeze the movable plate 26, and the movable plate 26 is squeezed and moves backward along the mounting column 27 The first spring 28 is compressed at the same time, and then the staff releases the T-shaped plate 20. The T-shaped plate 20 rotates downward to the narrower part of the T-shaped hole 29 inside the support box 25 under the action of the torsion spring 23, and the movable plate 26 will also squeeze the T-shaped plate 20 outward due to the force of the first spring 28, so that the T-shaped plate 20 is clamped inside the support box 25, and then the rear door body 2 is locked to one side of the car body 1, avoiding the rear door body 2 from hitting the two sides of the car body 1 due to arbitrary rotation, preventing the car body 1 from being damaged by the impact of the rear door body 2, achieving the locking effect of the rear door body 2, and facilitating the staff to use the car body 1 and the rear door body 2.

[0026] Example 2: Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 6 , the locking device of the rear door of the refrigerated truck, the observation assembly 3 includes two cover plates 8, the two cover plates 8 are slidably connected to one side of the two rear door bodies 2, one side of the rear door body 2 is fixedly installed with an observation panel 11 for viewing the inside of the compartment body 1, the observation panel 11 is a hollow multi-layer glass, one side of the rear door body 2 is provided with two fixing grooves 12 for sliding of the cover plates 8, the inside of the fixing groove 12 is fixedly installed with a support rod 13, one side of the cover plate 8 is fixedly installed with two connecting blocks 14, and the connecting block 14 is slidably connected with the support rod 13;

[0027] Through the set cover plate 8, the staff moves the cover plate 8 upward to drive the connecting block 14 to move upward along the support rod 13 inside the fixed groove 12 on the rear door body 2 until the cover plate 8 is moved to the outside of the observation plate 11, and then the staff can view the goods inside the carriage body 1 through the observation plate 11, avoiding the staff opening the rear door body 2 to view the goods inside the carriage body 1 to achieve the effect of observing the goods inside the carriage body 1;

[0028] Two lock bodies 10 are fixedly installed on one side of the carriage body 1, and lock heads 9 are fixedly installed on the top and bottom surfaces of the lock rod 5, and the lock heads 9 are movably connected with the lock bodies 10. The outer circumferential wall surface of the lock rod 5 is rotatably connected with a transverse plate 31, and two placement blocks 30 are fixedly installed on the outer circumferential wall surface of the lock rod 5. Pins are fixedly installed on both sides of the transverse plate 31, and the transverse plate 31 is rotatably connected with the placement blocks 30 through the pins. A support frame 32 is installed on one side of the rear door body 2, and two mounting blocks 15 are fixedly installed on one side of the support frame 32. One side of the mounting block 15 is fixedly connected to one side of the rear door body 2, and the transverse plate 31 is movably connected with the support frame 32;

[0029] Through the provided transverse plate 31, the staff member rotates the transverse plate 31 upward, and the transverse plate 31 rotates upward to drive the pin to rotate on the placement block 30 until the transverse plate 31 is rotated to the outside of the support frame 32, and then the staff member rotates the lock rod 5 in the horizontal direction to drive the lock head 9 to rotate on the lock body 10, thereby canceling the limit of the lock head 9 by the lock body 10, and then the staff member pulls the lock rod 5 outward to drive the rear door body 2 to rotate outward, thereby opening the carriage body 1, on the contrary, the transverse plate 31, the support frame 32, the lock head 9 and the lock body 10 cooperate to lock the rear door body 2, and prevent the rear door body 2 from rotating at will;

[0030] A clamping column 34 is elastically connected to one side of the support frame 32, one end of the clamping column 34 penetrates the support frame 32 and extends to the inside of the support frame 32, a clamping groove 33 is opened on one side of the cross plate 31, the clamping column 34 is movably clamped with the clamping groove 33, and a second spring 35 is movably sleeved on the outer circular wall of the clamping column 34, one end of the second spring 35 is fixedly connected to one end of the clamping column 34, and the other end of the second spring 35 is fixedly connected to one side of the support frame 32;

[0031] Through the horizontal plate 31, before the staff member rotates the horizontal plate 31 upward, the staff member moves the clamping column 34 outward to drive the support frame 32 to move outward inside the clamping groove 33 on the horizontal plate 31, and at the same time, the second spring 35 is stretched. After the staff member moves the clamping column 34 to the outside of the clamping groove 33 on the horizontal plate 31, the staff member can rotate the horizontal plate 31 outward. The clamping column 34 can lock the horizontal plate 31 to prevent the horizontal plate 31 from shaking;

[0032] A first sealing frame 6 is fixedly sleeved on the outer circular wall of the rear door body 2, and a plurality of second sealing frames 7 are fixedly sleeved on the outside of the first sealing frame 6. By setting the first sealing frame 6 and the second sealing frame 7, the first sealing frame 6 and the second sealing frame 7 can reduce the gap between the rear door body 2 and the car body 1, thereby improving the sealing of the rear door body 2 and avoiding leakage of cold air inside the car body 1.

[0033] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A locking device for a rear door of a refrigerated vehicle, comprising a vehicle body (1), characterized in that: Two rear door bodies (2) are rotatably connected inside the carriage body (1), two locking rods (5) are rotatably connected to one side of the rear door body (2), two positioning blocks (36) are fixedly installed on one side of the rear door body (2), two supporting blocks (24) are fixedly installed on one side of the rear door body (2), a locking assembly (4) for locking the rear door bodies (2) is provided on one side of the two supporting blocks (24), and an observation assembly (3) for viewing the goods inside the carriage body (1) is provided on one side of the rear door body (2).

2. The locking device for the rear door of a refrigerated vehicle according to claim 1, characterized in that: The locking assembly (4) comprises a mounting plate (19), wherein the mounting plate (19) is fixedly mounted on one side of the two support blocks (24), and two mounting tubes (21) are fixedly mounted on one side of the mounting plate (19). A T-shaped plate (20) is provided on one side of the mounting plate (19), and connecting rods (22) are fixedly mounted on both sides of the T-shaped plate (20), and the connecting rods (22) are elastically connected to the mounting tubes (21). Support boxes (25) are fixedly mounted on both sides of the carriage body (1), and a T-shaped hole (29) is provided on one side of the support box (25), and the T-shaped plate (20) is movably sleeved with the T-shaped hole (29), and a movable plate (26) is elastically connected inside the support box (25).

3. The locking device for the rear door of a refrigerated vehicle according to claim 1, characterized in that: The observation assembly (3) comprises two cover plates (8), wherein the two cover plates (8) are respectively slidably connected to one side of the two rear door bodies (2), and an observation plate (11) for viewing the interior of the vehicle body (1) is fixedly mounted on one side of the rear door body (2).

4. The locking device for the rear door of a refrigerated vehicle according to claim 1, characterized in that: Two lock bodies (10) are fixedly installed on one side of the carriage body (1), and lock heads (9) are fixedly installed on the top and bottom surfaces of the lock rod (5), and the lock heads (9) are movably connected to the lock bodies (10). The outer circular wall surface of the lock rod (5) is rotatably connected to a transverse plate (31), and a support frame (32) is installed on one side of the rear door body (2), and the transverse plate (31) is movably connected to the support frame (32).

5. The locking device for the rear door of a refrigerated vehicle according to claim 4, characterized in that: One side of the support frame (32) is elastically connected with a clamping column (34), one side of the transverse plate (31) is provided with a clamping groove (33), and the clamping column (34) is movably clamped with the clamping groove (33).

6. The locking device for the rear door of a refrigerated vehicle according to claim 1, characterized in that: A first sealing frame (6) is fixedly sleeved on the outer circular wall surface of the rear door body (2), and a plurality of second sealing frames (7) are fixedly sleeved on the outside of the first sealing frame (6).

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