Self-locking steel cart

Through the design of a self-locking steel trolley, the spring and locking block structure are used to realize the stable parking of the trolley on the load or slope, solving the problem of trolley slipping in the prior art and improving safety.

CN223174171UActive Publication Date: 2025-08-01SHAANXI GUTE IND EQUIP CO LTD
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Patent Information

Application Number
CN202422374209.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-29
Publication Date
2025-08-01
Estimated Expiration
2034-09-29

AI Technical Summary

Technical Problem

Existing steel trolleys are difficult to park on loads or slopes, and are prone to slipping, causing cargo to collapse and pose safety hazards.

Method used

A self-locking steel trolley is designed. Through a combined structure of spring and locking block, the wheels are locked and unlocked by the combination of the tie rod and hook, ensuring that the trolley can be parked stably when needed.

Benefits of technology

It effectively avoids the cart slipping on the load or slope, improves the stability of the cart when parked, reduces the risk of cargo collapse and improves safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a self-locking type steel cart which comprises a bottom plate, two supports are fixedly installed on the bottom side of the bottom plate, the two supports are both in a V shape, round holes are formed in the two supports, the same fixing cylinder is fixedly installed in the two round holes, wheels are arranged at the two ends of the fixing cylinder, and the two ends of the fixing cylinder are each provided with a steel wire rope. Connecting assemblies are arranged at the two ends of the two wheels and the two ends of the fixing cylinder, by arranging a first hook and a second hook, when a pull rod is driven to be hung on the first hook, two sets of springs can be in a loose state, so that two movable rings drive locking blocks to be clamped in two locking grooves, and then locking of the wheels is achieved; when the hanging rod is hung on the second hook, the two groups of ropes drive the two movable rings to get close to each other, so that the two locking blocks move out of the two locking grooves, the wheels are stopped and locked, and the cart can be self-locked at any place through a pointer and an identification block which are arranged in a matched mode during self-locking; therefore, the condition that the cart slides when being parked is avoided.
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Description

Technical Field

[0001] The utility model relates to the technical field of trolleys, in particular to a self-locking steel trolley. Background Art

[0002] A steel trolley is a handling vehicle that is pushed and pulled manually. It has single-wheel, two-wheel, three-wheel, and four-wheel types. The design of the steel trolley enables it to adapt to different usage environments and requirements. Whether in narrow spaces or occasions that require carrying heavy weights, the steel trolley can provide corresponding solutions. The trolley is used on construction sites to transfer sand and gravel or transport other materials.

[0003] However, during the pushing process, if something needs to be dealt with when parking, the trolley needs to be parked temporarily. At this time, the trolley needs to be in a stationary state. However, when the trolley is carrying heavy goods, it is very difficult to park the trolley. And when the slope is relatively steep, the parked trolley will slide, resulting in the collapse of the loading bucket full of goods during the sliding process, and the collapse of the goods will cause harm to surrounding things or people. Therefore, a self-locking steel trolley is proposed to solve the above problems. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a self-locking steel trolley to solve the problems put forward in the above background art.

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

[0006] A self-locking steel trolley includes a bottom plate. Two brackets are fixedly installed on the bottom side of the bottom plate. Both brackets are V-shaped. Both brackets are provided with round holes. The same fixed cylinder is fixedly installed in the two round holes. Wheels are arranged at both ends of the fixed cylinder. Connection components are arranged between the two wheels and the two ends of the fixed cylinder. Two fixed rings are fixedly installed in the fixed cylinder. A group of springs is fixedly installed on one side of each of the two fixed rings away from each other. The number of each group of springs is two. The ends of the two groups of springs away from each other are fixedly connected with movable rings. Locking blocks are fixedly installed on one side of each of the two movable rings away from each other. A pulling and locking component is arranged between the two movable rings and the bottom side of the bottom plate.

[0007] Preferably, the connection component includes round holes opened at the center points of the two wheels. Fixed blocks are fixedly installed in the two round holes. Connection blocks are fixedly installed on one side of the two fixed blocks close to each other. Clamping blocks are fixedly installed on the outer sides of the two connection blocks.

[0008] Preferably, two clamping grooves are formed in the inner wall of the fixed cylinder, the two clamping blocks are adapted to the two clamping grooves, the two clamping blocks are respectively rotatably arranged in the two clamping grooves, locking grooves are formed in the sides of the two connecting blocks close to each other, and the two locking grooves are adapted to the two locking blocks.

[0009] Preferably, ropes are fixedly installed on the sides of the two movable rings close to each other in the pulling and locking assembly, the other ends of the two ropes penetrate through the fixed ring and are fixedly connected to the same pull rod, a fixed rod is fixedly installed on the bottom side of the bottom plate, a first hook and a second hook are respectively fixedly installed on one side of the fixed rod, the first hook is located below the second hook, and the pull rod is hung on the first hook.

[0010] Preferably, an identification block is fixedly installed on one side of the left wheel, a connecting rod is fixedly installed on one side of the bottom plate, the connecting rod is L-shaped, and a pointer is fixedly installed on one side of the connecting rod, and the pointer points to the identification block.

[0011] Preferably, a loading hopper is fixedly installed on the top side of the bottom plate, the inner wall of one side of the loading hopper is inclined outward, and a push rod is fixedly installed on one side of the bottom plate.

[0012] Preferably, support rods are arranged on the bottom side of the bottom plate, and the number of the support rods is two.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: for this self-locking steel cart, by providing the first hook and the second hook, when the pull rod drives and is hung on the first hook, the two groups of springs will be in a relaxed state, so that the two movable rings drive the locking blocks to be clamped in the two locking grooves, thereby realizing the locking of the wheels. When the hanging rod is hung on the second hook, the two groups of ropes will drive the two movable rings to approach each other, so that the two locking blocks move out of the two locking grooves, thereby realizing the unlocking of the wheels. And when self-locking, with the cooperation of the provided pointer and identification block, the cart can be self-locked anywhere, thus avoiding the situation of the cart slipping when parked. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional schematic diagram of the structure of the present utility model;

[0015] Figure 2 [[ID=2⑤]]is the structure of the present utility model Figure 1 partial schematic diagram of part A therein;

[0016] Figure 3 is a sectional schematic diagram of the structure of the present utility model;

[0017] Figure 4 is the structure of the present utility model Figure 3 partial schematic diagram of part B therein;

[0018] Figure 5This is a schematic diagram of some parts of the structure locking block of the present utility model.

[0019] In the figure: 1. Bottom plate; 2. Loading hopper; 3. Bracket; 4. Fixed cylinder; 5. Card slot; 6. Wheel; 7. Fixed block; 8. Connecting block; 9. Card block; 10. Locking groove; 11. Fixed ring; 12. Spring; 13. Movable ring; 14. Locking block; 15. Rope; 16. Pull rod; 17. Fixed rod; 18. First hook; 19. Second hook; 20. Identification block; 21. Connecting rod; 22. Pointer; 23. Push rod; 24. Support rod. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0021] Refer to Figures 1-5, a self-locking steel trolley, comprising a bottom plate 1. Two brackets 3 are fixedly installed on the bottom side of the bottom plate 1. Both of the two brackets 3 are V-shaped. Both of the two brackets 3 are provided with round holes. The same fixed cylinder 4 is fixedly installed in the two round holes. Wheels 6 are arranged at both ends of the fixed cylinder 4. A connecting component is arranged between the two wheels 6 and the two ends of the fixed cylinder 4. Two fixing rings 11 are fixedly installed in the fixed cylinder 4. A group of springs 12 are fixedly installed on one side of each of the two fixing rings 11 away from each other. The number of each group of springs 12 is two. The ends of the two groups of springs 12 away from each other are fixedly connected with movable rings 13. Locking blocks 14 are fixedly installed on one side of each of the two movable rings 13 away from each other. A pulling and locking component is arranged between the two movable rings 13 and the bottom side of the bottom plate 1. The connecting component includes round holes opened at the center points of the two wheels 6. Fixed blocks 7 are fixedly installed in the two round holes. Connecting blocks 8 are fixedly installed on one side of each of the two fixed blocks 7 close to each other. Clamping blocks 9 are fixedly installed on the outer sides of the two connecting blocks 8. Two clamping grooves 5 are opened on the inner wall of the fixed cylinder 4. The two clamping blocks 9 are adapted to the two clamping grooves 5. The two clamping blocks 9 are respectively rotatably arranged in the two clamping grooves 5. Locking grooves 10 are opened on one side of each of the two connecting blocks 8 close to each other. The two locking grooves 10 are adapted to the two locking blocks 14. Since the clamping blocks 9 fixedly installed on the outer sides of the two connecting blocks 8 are both adapted to the two clamping grooves 5, and the two clamping blocks 9 are rotatably connected in the two clamping grooves 5, when the trolley is pushed to move, the two clamping blocks 9 will rotate in the two clamping grooves 5, so that the two wheels 6 rotate synchronously. When it is necessary to stay on a half slope, the pull rod 16 is pulled to drive the two ropes 15 to move backward. When the pull rod 16 is separated from the second hook 19, the pull rod 16 is placed on the first hook 18. And because when the pull rod 16 is placed on the second hook 19, the two groups of springs 12 will be in a tense state, while when placed on the first hook 18, the two groups of springs 12 will be in a relaxed state. In the relaxed state, the two groups of springs 12 will drive the two movable rings 13 to reset, so that the two locking blocks 14 are respectively inserted into the two locking grooves 10, thereby realizing the locking of the wheels 6 and avoiding the situation that the trolley moves when staying on the half slope.

[0022] Specifically, on one side of the two moving rings 13 that are close to each other of the pulling and locking assembly, ropes 15 are fixedly installed. The other ends of the two ropes 15 both penetrate through the fixed ring 11 and are fixedly connected to the same pull rod 16. A fixed rod 17 is fixedly installed on the bottom side of the bottom plate 1. On one side of the fixed rod 17, a first hook 18 and a second hook 19 are respectively fixedly installed. The first hook 18 is located below the second hook 19. The pull rod 16 is hung on the first hook 18. By providing the pull rod 16, when it is necessary to push the trolley to move, by pulling the pull rod 16 to drive the two ropes 15 to move backward. When the two ropes 15 are subjected to a pulling force, they will drive the two moving rings 13 to approach each other within the fixed cylinder 4, so that the locking blocks 14 fixedly installed on the mutually remote sides of the two moving rings 13 move out of the two locking grooves 10. After moving out, the pull rod 16 is clamped above the second hook 19 to prevent the two sets of springs 12 from driving the two moving rings 13 to reset when the wheels 6 are moving, thereby causing the two locking blocks 14 to be re-inserted into the two locking grooves 10. When it is necessary to lock, the cooperation of the provided pointer 22 and the identification block 20 can achieve the locking of the wheels 6.

[0023] Specifically, an identification block 20 is fixedly installed on one side of the left wheel 6. A connecting rod 21 is fixedly installed on one side of the bottom plate 1. The connecting rod 21 is L-shaped. A pointer 22 is fixedly installed on one side of the connecting rod 21. The pointer 22 points to the identification block 20. A loading hopper 2 is fixedly installed on the top side of the bottom plate 1. The inner wall on one side of the loading hopper 2 is inclined outward. A push rod 23 is fixedly installed on one side of the bottom plate 1. Two support rods 24 are arranged on the bottom side of the bottom plate 1. By providing the identification block 20, when it is necessary to park on a half-slope, by observing whether the pointer 22 points to the identification block 20. If it does not point to the identification block 20, then continue to push the trolley to move a short distance. When the pointer 22 points to the identification block 20, by pulling the pull rod 16 to move onto the first hook 18, the two locking blocks 14 can be inserted into the two locking grooves 10, thereby achieving the locking of the wheels 6. And the cooperation of the two support rods 24 can greatly improve the stable parking state of the trolley.

[0024] In use: The loading hopper 2 is arranged on the top side of the bottom plate 1 to load goods. When it is necessary to push the cart to move, by pulling the pull rod 16, the two ropes 15 are driven to move backward. When the two ropes 15 are subjected to tensile force, the two movable rings 13 will be driven to approach each other in the fixed cylinder 4, so that the locking blocks 14 fixedly installed on both sides of the two movable rings 13 moving away from each other move out of the two locking grooves 10. After moving out, the pull rod 16 is clamped above the second hook 19 to prevent the two sets of springs 12 from driving the two movable rings 13 to reset when the wheels 6 are moving, resulting in the two locking blocks 14 being reinserted into the two locking grooves 10. When the cart needs to stay at a half-slope position, by observing whether the pointer 22 fixedly installed on one side of the connecting rod 21 points to the identification block 20. If it does not point to the identification block 20, continue to push the cart to move a short distance. When the pointer 22 points to the identification block 20, first slowly lower the cart until the two support rods 24 contact the ground, and then pull the pull rod 16 again to drive the two ropes 15 to move backward. When the pull rod 16 disengages from the second hook 19, place the pull rod 16 on the first hook 18. And because when the pull rod 16 is placed on the second hook 19, the two sets of springs 12 will be in a tense state, while when placed on the first hook 18, the two sets of springs 12 will be in a relaxed state. In the relaxed state, the two sets of springs 12 will drive the two movable rings 13 to reset, so that the two locking blocks 14 are respectively inserted into the two locking grooves 10, thereby realizing the locking of the wheels 6 and avoiding the situation that the cart moves when staying on a half-slope. And the cooperation with the two support rods 24 can greatly improve the stable staying state of the cart. Moreover, by providing the identification block 20 and the pointer 22, the locking of the wheels 6 can be made more convenient.

[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-locking steel trolley, comprising a bottom plate (1), characterized in that, Two brackets (3) are fixedly installed on the bottom side of the bottom plate (1). Both of the two brackets (3) are V-shaped. Each of the two brackets (3) is provided with a round hole, and the same fixed cylinder (4) is fixedly installed in the two round holes. Wheels (6) are arranged at both ends of the fixed cylinder (4). Connecting components are arranged between the two wheels (6) and both ends of the fixed cylinder (4). Two fixing rings (11) are fixedly installed in the fixed cylinder (4). A set of springs (12) is fixedly installed on one side of each of the two fixing rings (11) away from each other. The number of springs (12) in each set is two. The ends of the two sets of springs (12) away from each other are fixedly connected with movable rings (13). Locking blocks (14) are fixedly installed on one side of each of the two movable rings (13) away from each other. A pulling and locking component is arranged between the two movable rings (13) and the bottom side of the bottom plate (1).

2. The self-locking steel trolley according to claim 1, wherein, The connecting component includes round holes opened at the center points of the two wheels (6). Fixed blocks (7) are fixedly installed in the two round holes. Connecting blocks (8) are fixedly installed on one side of each of the two fixed blocks (7) close to each other. Clamping blocks (9) are fixedly installed on the outer sides of the two connecting blocks (8).

3. The self-locking steel trolley according to claim 2, wherein Two clamping grooves (5) are opened on the inner wall of the fixed cylinder (4). The two clamping blocks (9) are adapted to the two clamping grooves (5). The two clamping blocks (9) are respectively rotatably arranged in the two clamping grooves (5). Locking grooves (10) are opened on one side of each of the two connecting blocks (8) close to each other. The two locking grooves (10) are adapted to the two locking blocks (14).

4. A self-locking steel trolley according to claim 1, wherein, The pulling and locking component includes ropes (15) fixedly installed on one side of each of the two movable rings (13) close to each other. The other ends of the two ropes (15) penetrate through the fixing rings (11) and are fixedly connected with the same pull rod (16). A fixed rod (17) is fixedly installed on the bottom side of the bottom plate (1). A first hook (18) and a second hook (19) are respectively fixedly installed on one side of the fixed rod (17). The first hook (18) is located below the second hook (19). The pull rod (16) is hung on the first hook (18).

5. The self-locking steel trolley according to claim 1, wherein, An identification block (20) is fixedly installed on one side of the left wheel (6). A connecting rod (21) is fixedly installed on one side of the bottom plate (1). The connecting rod (21) is L-shaped. A pointer (22) is fixedly installed on one side of the connecting rod (21). The pointer (22) points to the identification block (20).

6. The self-locking steel trolley according to claim 1, characterized in that, A loading hopper (2) is fixedly installed on the top side of the bottom plate (1). The inner wall on one side of the loading hopper (2) is inclined outward. A push rod (23) is fixedly installed on one side of the bottom plate (1).

7. A self-locking steel trolley according to claim 1, wherein, Support rods (24) are arranged on the bottom side of the bottom plate (1). The number of the support rods (24) is two.