Compression spring assembly of carrier

Abstract

The utility model relates to the technical field of pressure spring assemblies, and discloses a carrier pressure spring assembly which comprises a frame, a handrail is fixedly installed on the top of the frame, universal wheels are arranged at the bottom end of the frame, a protection assembly is arranged on the frame, the protection assembly comprises a threaded cylinder, and the threaded cylinder is fixedly connected with the handrail. The side wall of the frame is fixedly connected with a threaded cylinder, and the outer portion of the threaded cylinder is in threaded fit with a threaded block. According to the carrier pressure spring assembly, in order to better protect a vehicle body, the protection assembly is arranged, when a handrail is pulled and universal wheels are matched, a vehicle frame can be moved, and when the four corners of the vehicle frame collide with an external object, an arc-shaped plate is extruded to axially move, so that an annular plate drives a piston rod to synchronously move in a threaded cylinder; and the threaded block is matched to enable the compression spring body to be compressed and deformed, so that force unloading can be conducted on collision, direct rigid contact is avoided, the effect of protecting the frame is achieved, the extension amount of the arc-shaped plate can be adjusted by rotating the threaded block, and therefore the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of compression spring assembly technology, specifically a compression spring assembly for a transport vehicle. Background Technology

[0002] As a logistics handling equipment, pallet trucks are used in factories, warehouses and other settings to handle short-distance transport of goods. Manual pallet trucks have become a very common loading, unloading and handling tool in workpiece transportation due to their advantages such as easy operation and low cost.

[0003] Currently, existing compression spring assemblies for transport vehicles have revealed some problems in practical applications. When the vehicle frame is impacted, the compression spring is prone to slippage under stress, and the spring itself is also prone to distortion and deformation. This affects the accuracy and stability of the compression spring assembly and cannot effectively protect the vehicle body.

[0004] In view of this, we propose a transport vehicle compression spring assembly. Utility Model Content

[0005] The purpose of this invention is to provide a compression spring assembly for a transport vehicle to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A transport vehicle compression spring assembly includes a frame, a handle fixedly mounted on the top of the frame, casters provided at the bottom of the frame, and a protective assembly provided on the frame, the protective assembly including:

[0008] A threaded cylinder is fixedly connected to the side wall of the vehicle frame, and a threaded block is threadedly fitted to the external thread of the threaded cylinder;

[0009] A compression spring body is sleeved on the outside of the threaded cylinder, and a piston rod is slidably installed inside the threaded cylinder;

[0010] A circular plate is rotatably mounted on the arc-shaped outer wall of the piston rod away from the threaded cylinder, and an arc-shaped plate is fixedly mounted on the circular outer wall of the piston rod away from the threaded cylinder. The outer walls of the threaded block and the outer walls of the circular plate are respectively fixedly connected to both ends of the compression spring body.

[0011] In a further embodiment, multiple sets of omnidirectional wheels are provided to better move the vehicle frame.

[0012] In a further embodiment, multiple sets of the threaded cylinder, threaded block, compression spring body, piston rod, annular plate, and arc-shaped plate are provided to better protect the vehicle body.

[0013] In a further embodiment, the frame is also provided with an auxiliary component, which includes a threaded plate. The threaded plate is fixedly installed at one end of the bottom of the frame, and a threaded rod is threaded inside the threaded plate. A knob is fixedly installed at one end of the threaded rod.

[0014] In a further embodiment, a rectangular tube is fixedly installed at the other end of the bottom of the frame, a rectangular rod is slidably installed inside the rectangular tube, and a circular block is fixedly installed at the other end of the threaded rod. The threaded rod passes through the rectangular tube and the rectangular rod, and the circular block is rotatably installed inside the rectangular rod to better drive the rectangular rod to move.

[0015] In a further embodiment, the end of the rectangular rod away from the rectangular tube is fixedly connected to the central sidewall of the horizontal plate. The top of the horizontal plate has a threaded hole, and multiple sets of threaded holes are arranged in a linear array with equal spacing. A vertical rod is threaded into the threaded hole, and multiple sets of vertical rods are arranged. A slot is provided on the vertical rod, and multiple sets of slots are arranged in a linear array with equal spacing, so as to better place the T-shaped plate.

[0016] In a further embodiment, a U-shaped frame is fixedly installed at the top of the end of the frame away from the handrail. A hinge rod is tightly hinged inside the U-shaped frame. The hinge rod is fixedly connected to the inside of one end of a T-shaped plate. The arc-shaped movement trajectory of the other end of the T-shaped plate intersects with the slot, making the T-shaped plate more firmly placed.

[0017] Compared with the prior art, the present invention provides a transport vehicle compression spring assembly, which has the following advantages:

[0018] 1. This pallet truck compression spring assembly is designed to better protect the vehicle body. By incorporating protective components, when the handle is pulled, the frame can be moved in conjunction with the casters. When the four corners of the frame collide with an external object, the arc-shaped plate is compressed and moves axially, causing the annular plate to drive the piston rod to move synchronously inside the threaded cylinder. This, in conjunction with the threaded block, causes the compression spring body to compress and deform, thereby dissipating the impact force and avoiding direct rigid contact, thus protecting the frame. By rotating the threaded block, the extension of the arc-shaped plate can be adjusted, thereby improving practicality.

[0019] 2. To better expand the capacity and make the vehicle more practical, the spring assembly of this transport vehicle is equipped with an auxiliary component. When expansion is needed, rotating the knob causes the threaded rod to rotate inside the threaded plate and move axially, thereby causing the ring block to move synchronously. This causes the rectangular rod to move axially laterally inside the rectangular tube, moving the horizontal plate away from the frame. By inserting the vertical rod into different threaded holes, it can adapt to the needs of fixing workpieces of different widths. In conjunction with the hinge rod, rotating the T-shaped plate on the U-shaped frame and inserting the T-shaped plate into the slot can expand the frame capacity, allowing more workpieces to be placed, thus making the vehicle more practical. Attached Figure Description

[0020] Figure 1 This is a first-view schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a second-view schematic diagram of the overall structure of this utility model;

[0022] Figure 3 This utility model Figure 2 Enlarged structural diagram of region A in the middle;

[0023] Figure 4 This is a third-view schematic diagram of the overall structure of this utility model;

[0024] Figure 5 This utility model Figure 4 A magnified structural diagram of region B in the middle.

[0025] Explanation of icon numbers:

[0026] 1. Frame; 2. Handrails; 3. Casters;

[0027] 4. Protective components; 41. Threaded cylinder; 42. Threaded block; 43. Compression spring body; 44. Piston rod; 45. Circular ring plate; 46. Arc plate;

[0028] 5. Auxiliary components; 51. Threaded plate; 52. Threaded rod; 53. Knob; 54. Rectangular tube; 55. Rectangular rod; 56. Circular block; 57. Horizontal plate; 58. Threaded hole; 59. Vertical rod; 510. Slot; 511. U-shaped frame; 512. Hinge rod; 513. T-shaped plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0031] Please see Figures 1-5 This utility model provides a technical solution:

[0032] A transport vehicle compression spring assembly includes a frame 1, a handle 2 fixedly mounted on the top of the frame 1, and casters 3 provided at the bottom of the frame 1. In addition, four sets of casters 3 are provided to better move the frame 1.

[0033] In one embodiment of this utility model, a protective component 4 is provided on the frame 1. The protective component 4 includes a threaded cylinder 41, which is fixedly connected to the side wall of the frame 1. A threaded block 42 is threadedly fitted to the outside of the threaded cylinder 41. A compression spring body 43 is sleeved on the outside of the threaded cylinder 41. A piston rod 44 is slidably installed inside the threaded cylinder 41. A circular ring plate 45 is rotatably installed on the arc-shaped outer wall of the piston rod 44 away from the threaded cylinder 41. An arc plate 46 is fixedly installed on the circular outer wall of the piston rod 44 away from the threaded cylinder 41. The outer walls of the threaded block 42 and the outer walls of the circular ring plate 45 are fixedly connected to the two ends of the compression spring body 43, respectively. In addition, four sets of threaded cylinder 41, threaded block 42, compression spring body 43, piston rod 44, circular ring plate 45 and arc plate 46 are provided and located at the four corners of the frame 1, thereby better protecting the vehicle body.

[0034] In this embodiment, the operator applies force by gripping the handle 2. Because the casters 3 at the bottom of the frame 1 have flexible steering and rolling functions, the frame 1 can be easily moved to the target position. During the movement, the frame 1 is in a dynamic state and may collide with surrounding objects at any time. Once the four corners of the frame 1 collide with an external object, the arc-shaped plate 46, which bears the brunt of the impact, will be directly subjected to the compressive force applied by the external object. Because the arc-shaped plate 46 is fixedly connected to the piston rod 44, this compressive force will be transmitted to the piston rod 44, causing it to move axially along the inside of the threaded cylinder 41. When the piston rod 44 moves, it drives the connected annular plate 45 to move together. During the movement, the annular plate 45 compresses the compression spring body 43, and simultaneously, in conjunction with the threaded block 42 fixed to the outside of the threaded cylinder 41, causes the compression spring body 43 to undergo compression deformation. The compression deformation of the compression spring body 43 can absorb the impact. The generated energy transforms the original rigid collision into a flexible buffer, thereby greatly reducing the impact force of the collision on the frame 1 and effectively preventing damage to the frame 1 due to direct rigid contact. In different usage scenarios, the collision risk and force may vary. At this time, the operator can rotate the threaded block 42. Since the threaded block 42 and the threaded cylinder 41 are threadedly engaged, rotating the threaded block 42 will cause it to move along the axial direction of the threaded cylinder 41, thereby driving the compression spring body 43 and the annular plate 45 connected to it to move axially and rotate simultaneously. This will drive the piston rod 44 and the arc plate 46 to move axially synchronously, thereby achieving the purpose of adjusting the extension of the arc plate 46. When dealing with scenarios with higher collision risk, the extension of the arc plate 46 can be increased so that it contacts the external object earlier and activates the protection mechanism in advance. In scenarios with low collision risk, the extension can be appropriately reduced to avoid unnecessary structural space occupation.

[0035] In one embodiment of this utility model, an auxiliary component 5 is further provided on the frame 1. The auxiliary component 5 includes a threaded plate 51. The threaded plate 51 is fixedly installed at one bottom end of the frame 1. A threaded rod 52 is threadedly installed inside the threaded plate 51. A knob 53 is fixedly installed at one end of the threaded rod 52. In addition, a rectangular tube 54 is fixedly installed at the other bottom end of the frame 1. A rectangular rod 55 is slidably installed inside the rectangular tube 54. A ring block 56 is fixedly installed at the other end of the threaded rod 52. The threaded rod 52 passes through the rectangular tube 54 and the rectangular rod 55. The ring block 56 is rotatably installed inside the rectangular rod 55 to better drive the rectangular rod 55 to move. In addition, the end of the rectangular rod 55 away from the rectangular tube 54 is fixedly connected to the center sidewall of the horizontal plate 57. The top of the horizontal plate 57... The end is provided with threaded holes 58, and there are multiple sets of threaded holes 58, which are arranged in a linear array with equal spacing. Vertical rods 59 are installed inside the threaded holes 58. There are two sets of vertical rods 59, and there are slots 510 on the vertical rods 59. There are multiple sets of slots 510 on a single set of vertical rods 59, which are arranged in a linear array with equal spacing, so as to better place the T-shaped plate 513. In addition, a U-shaped frame 511 is fixedly installed on the top of the end of the frame 1 away from the armrest 2. A hinge rod 512 is tightly hinged inside the U-shaped frame 511. The hinge rod 512 is fixedly connected to the inside of one end of the T-shaped plate 513. The arc-shaped movement trajectory of the other end of the T-shaped plate 513 intersects with the slot 510, making the T-shaped plate 513 more firmly placed.

[0036] In this embodiment, when it is necessary to increase the loading capacity of the transport vehicle to accommodate the transportation of more or larger workpieces, the operator begins the expansion operation. First, the knob 53 is rotated. Since the knob 53 is fixedly connected to the threaded rod 52, and the threaded rod 52 and the threaded plate 51 are threadedly engaged, the rotation of the knob 53 will cause the threaded rod 52 to rotate inside the threaded plate 51. According to the principle of thread transmission, the threaded rod 52 will move along its own axis while rotating. The axial movement of the threaded rod 52 will cause the ring block 56 fixed at one end to move synchronously. The ring block 56 is rotatably installed inside the rectangular rod 55, so the movement of the ring block 56 can push the rectangular rod 55 to move axially laterally inside the rectangular cylinder 54. Since the end of the rectangular rod 55 away from the rectangular cylinder 54 is fixedly connected to the horizontal plate 57, the movement of the rectangular rod 55 will cause the horizontal plate 57 to gradually move away from the frame 1, expanding the additional loading space. Multiple sets of equally spaced linear arrays are opened at the top of the horizontal plate 57. The vertical rods 59 can be threaded into the threaded holes 58. For workpieces of different widths, the operator can insert the vertical rods 59 into the appropriate threaded holes 58. By changing the installation position of the vertical rods 59 on the horizontal plate 57, the distance between the two vertical rods 59 can be adjusted to meet the fixing requirements of workpieces of different widths, ensuring that the workpieces will not fall or be damaged due to shaking during transportation. The operator can rotate the hinge rod 512 to make the T-shaped plate 513 rotate around the hinge point. Since multiple sets of equally spaced linear array slots 510 are opened on a single set of vertical rods 59, and the arc-shaped movement trajectory of the other end of the T-shaped plate 513 intersects with the slots 510, when the T-shaped plate 513 is rotated to a suitable angle, it can be locked into the slots 510. In this way, a stable structure is formed between the horizontal plate 57 and the frame 1, successfully realizing the expansion of the frame 1, allowing the transport vehicle to place more workpieces, and significantly improving the practicality and transportation capacity of the vehicle body.

[0037] All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts and equipment are all conventional models in the prior art, and will not be described in detail here.

[0038] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A spring compression assembly of a carrier, comprising a frame (1), a handrail (2) fixedly installed on the top of the frame (1), and universal wheels (3) arranged at the bottom end of the frame (1), characterized in that: The frame (1) is provided with a protection assembly (4), the protection assembly (4) comprises: The threaded cylinder (41) is fixedly connected to the side wall of the frame (1), and the threaded cylinder (41) is externally threadedly matched with the threaded block (42); The compression spring body (43) is externally sleeved with the threaded cylinder (41), and the threaded cylinder (41) is internally slidably installed with the piston rod (44); The circular ring plate (45) is rotatably installed on the arc-shaped outer wall of the one end of the piston rod (44) away from the threaded cylinder (41), and the circular ring plate (45) is fixedly installed on the circular outer wall of the one end of the piston rod (44) away from the threaded cylinder (41); and the compression spring body (43) is fixedly connected to the outer wall of the threaded block (42) and the outer wall of the circular ring plate (45) at both ends, respectively.

2. A truck spring assembly according to claim 1 wherein: The universal wheel (3) is provided with multiple groups.

3. A truck spring assembly as defined in claim 1 wherein: The threaded cylinder (41), the threaded block (42), the compression spring body (43), the piston rod (44), the circular ring plate (45) and the arc-shaped plate (46) are provided with multiple groups.

4. The truck compression spring assembly of claim 1, wherein: The frame (1) is further provided with an auxiliary assembly (5), the auxiliary assembly (5) comprises a threaded plate (51), the threaded plate (51) is fixedly installed on one end of the bottom of the frame (1), the threaded plate (51) is internally threadedly installed with a threaded rod (52), and the threaded rod (52) is fixedly installed with a knob (53) at one end.

5. A truck compression spring assembly as defined in claim 4 wherein: The other end of the bottom of the frame (1) is fixedly installed with a rectangular cylinder (54), the rectangular cylinder (54) is internally slidably installed with a rectangular rod (55), the other end of the threaded rod (52) is fixedly installed with a circular ring block (56), the threaded rod (52) penetrates through the rectangular cylinder (54) and the rectangular rod (55), and the circular ring block (56) is rotatably installed in the rectangular rod (55).

6. A truck compression spring assembly as defined in claim 5 wherein: The one end of the rectangular rod (55) away from the rectangular cylinder (54) is fixedly connected to the center side wall of the horizontal plate (57), the top end of the horizontal plate (57) is provided with a threaded hole (58), multiple groups of the threaded hole (58) are arranged at equal intervals in a linear array, the threaded hole (58) is internally threadedly installed with a vertical rod (59), and the vertical rod (59) is provided with multiple groups.

7. A truck compression spring assembly as defined in claim 6 wherein: The one end of the frame (1) away from the handrail (2) is fixedly installed with a U-shaped frame (511) on the top, the U-shaped frame (511) is closely hingedly installed with a hinge rod (512) inside, the hinge rod (512) is fixedly connected to the one end inside of the T-shaped plate (513) outside, and the arc-shaped motion track of the other end of the T-shaped plate (513) intersects with the clamping groove (510).

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