Pallet truck steering assembly and pallet truck

By designing steering components of shock absorber wheels and support frames in the pallet truck, the existing pallet trucks are solved for vibration and maintenance costs during corners or bumps, achieving higher driving comfort and operational ease.

CN222512787UActive Publication Date: 2025-02-21NINGBO DEANNA MASCH CO LTD
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Patent Information

Application Number
CN202421413758.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-19
Publication Date
2025-02-21
Estimated Expiration
2034-06-19

AI Technical Summary

Technical Problem

The existing pallet trucks use rigidly connected auxiliary wheels, which makes the vehicle unable to buffer the stress during corners or bumps, increasing vibration and maintenance costs.

Method used

A pallet truck steering assembly is designed, using shock absorber wheels and support frames. Through the rotatable connection of the rotating shaft and the setting of shock absorber springs, the stress distribution adjustment and vibration relief of the vehicle during cornering are achieved.

Benefits of technology

Effectively alleviate the bumps and vibrations of the vehicle during operation, improve driving comfort, reduce wheel losses and maintenance costs, and improve steering smoothness and operation convenience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a pallet truck steering assembly and a pallet truck. The pallet truck steering assembly comprises a supporting frame, a steering assembly and a steering assembly, the damping wheels are installed on the two sides of the bearing frame, each damping wheel comprises a connecting piece, a connecting frame, a bracket, a moving wheel and a rotating shaft, one side of each connecting piece is fixedly connected with the bearing frame, each rotating shaft is fixedly installed at the upper end of the corresponding connecting frame and rotatably connected with the corresponding connecting piece, and each connecting frame is fixedly connected with the corresponding bracket. The connecting frame is rotatably connected with the bracket, a damping spring is arranged between the connecting frame and the bracket, and the moving wheels are fixedly mounted on the bracket. According to the steering assembly of the pallet truck, the damping wheels and the supporting frame are installed, so that jolt and vibration can be effectively relieved when the truck runs, and the driving comfort is improved; due to the structural design, the stress distribution can be adjusted when the vehicle turns, and the wheel loss, the maintenance cost and the maintenance time are reduced; and through rotatable connection of the rotating shaft and arrangement of the damping spring, the vehicle can steer more smoothly, and operation is more convenient.
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Description

Technical Field

[0001] The utility model relates to the technical field of pallet truck components, and more specifically, to a pallet truck steering component and a pallet truck. Background Art

[0002] Pallet trucks, as one of the indispensable tools in modern logistics, play an important role. With simple design and powerful functions, they are designed to improve cargo handling efficiency and ease of operation. Initially, pallet trucks were mainly used for cargo handling in storage places or freight centers. With the development of supply chain management and the advancement of logistics technology, pallet trucks have gradually become one of the indispensable equipment in various places such as factories, supermarkets, and logistics centers.

[0003] Existing pallet trucks generally use auxiliary wheels with rigid connection. This traditional design has many problems. The rigid connection makes it impossible to adjust the force on the vehicle wheels, resulting in uneven wear and tear, which increases maintenance costs and time. More importantly, when the vehicle is in operation, it cannot buffer the force when turning or bumping, resulting in increased vibration and greatly reduced driving comfort. Summary of the invention

[0004] The utility model aims to solve one of the technical problems in the related technology to a certain extent. To this end, the utility model proposes a pallet truck steering assembly, which can effectively alleviate bumps and vibrations when the vehicle is running by installing shock-absorbing wheels and support frames, and improve driving comfort; the structural design enables the force distribution of the vehicle to be adjusted when turning, reducing wheel wear, maintenance costs and time; the rotatable connection of the shaft and the setting of the shock-absorbing spring make the vehicle steering smoother and the operation more convenient.

[0005] The utility model also provides a pallet truck with the steering assembly.

[0006] The technical solution adopted by the utility model is to provide a pallet truck steering assembly, including:

[0007] Support frame;

[0008] The shock-absorbing wheels are installed on both sides of the supporting frame, and the shock-absorbing wheels include a connecting member, a connecting frame, a bracket, a movable wheel and a rotating shaft. One side of the connecting member is fixedly connected to the supporting frame, the rotating shaft is fixedly installed on the upper end of the connecting frame, and the rotating shaft is rotatably connected to the connecting member, the connecting frame is rotatably connected to the bracket, and a shock-absorbing spring is provided between the two, and the movable wheel is fixedly installed on the bracket.

[0009] After adopting the above structure, by installing the shock-absorbing wheel and the support frame, the vehicle can more effectively alleviate bumps and vibrations during operation and improve driving comfort. The structural design of the connecting piece, the connecting frame, the bracket and the moving wheel enables the vehicle to more flexibly adjust the force distribution when turning, reduce wheel wear, and reduce maintenance costs and time. At the same time, the rotatable connection of the shaft and the setting of the shock-absorbing spring make the vehicle's steering smoother and the operation more convenient.

[0010] According to an embodiment of the utility model, the connecting member includes a plate body, a middle member and a bushing, one side of the middle member is fixedly connected to the plate body, and the other side of the middle member is fixedly connected to the bushing.

[0011] According to an embodiment of the utility model, the plate body is provided with a plug hole adapted to the outer periphery of the bushing.

[0012] According to an embodiment of the utility model, a first bearing is provided between the connecting member and the rotating shaft, and / or a second bearing is provided between the moving wheel and the bracket.

[0013] According to an embodiment of the utility model, the steering assembly of the pallet truck also includes a travel wheel and a motor for driving the travel wheel. The motor is provided to assist the movement of the pallet truck to achieve the purpose of electric travel, thereby saving manpower and improving work efficiency.

[0014] According to an embodiment of the utility model, the running wheels are off-road wheels, and the provision of the off-road wheels enables the steering assembly to travel normally on complex roads.

[0015] According to an embodiment of the present utility model, the connecting frame includes a first fork arm and a first platform located between two side walls of the first fork arm, and the rotating shaft is vertically installed on the first platform.

[0016] According to an embodiment of the utility model, the connecting frame further comprises a second platform, and the second platform is arranged between two side walls of the first fork arm.

[0017] According to an embodiment of the utility model, the bracket includes a second fork arm and a third platform located between two side walls of the second fork arm, and the second platform and the third platform are connected by a screw rod sleeved with a shock-absorbing spring.

[0018] A pallet truck comprises a fork and any one of the above-mentioned pallet truck steering assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A three-dimensional diagram of a steering assembly in an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 A partial enlarged view of the middle steering assembly;

[0022] Figure 3 This is a schematic diagram of the structure of the steering assembly in the embodiment of the utility model;

[0023] Figure 4 This is a front view of the shock-absorbing wheel in the embodiment of the utility model;

[0024] Figure 5 for Figure 4 Sectional view along line AA;

[0025] Figure 6 A three-dimensional diagram of a shock-absorbing wheel in an embodiment of the utility model;

[0026] Figure 7 An exploded view of the shock-absorbing wheel in the embodiment of the utility model;

[0027] Figure 8 A three-dimensional diagram of a connecting member in an embodiment of the utility model;

[0028] Fig. 9 An exploded view of a connecting member in an embodiment of the utility model;

[0029] Fig.10 It is a three-dimensional diagram of a pallet truck in an embodiment of the present utility model.

[0030] Description of the numbers in the figure:

[0031] 1. Connecting piece; 2. Connecting frame; 3. Bracket; 4. Moving wheel; 5. Connecting arm; 6. Fork; 7. Support frame; 8. Shock-absorbing spring; 9. Screw; 10. Rotating shaft; 11. First bearing; 12. Second bearing; 13. End cap; 14. Motor; 15. Traveling wheel;

[0032] 1a, plate body; 1b, middle piece; 1c, bushing; 1d, socket;

[0033] 2a, first fork arm; 2b, first platform; 2c, second platform;

[0034] 31. Second fork arm; 3b. Third platform. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Embodiment 1

[0036] like Figure 1-9 As shown, in this embodiment, a pallet truck steering assembly is disclosed, comprising:

[0037] Support frame 7;

[0038] The shock-absorbing wheels are installed on both sides of the supporting frame 7, and the shock-absorbing wheels include a connecting member 1, a connecting frame 2, a bracket 3, a moving wheel 4 and a rotating shaft 10. One side of the connecting member 1 is fixedly connected to the supporting frame 7, the rotating shaft 10 is fixedly installed on the upper end of the connecting frame 2, and the rotating shaft 10 is rotatably connected to the connecting member 1, the connecting frame 2 is rotatably connected to the bracket 3, and a shock-absorbing spring 8 is provided therebetween, and the moving wheel 4 is fixedly installed on the bracket 3.

[0039] Furthermore, combined with Figure 1-3 As shown, in this embodiment, the support frame 7 is arranged horizontally, and the middle position thereof is used to connect the handle assembly of the pallet truck. The left and right sides of the support frame 7 are connected to the forks 6 through the connecting arms 5, that is, one end of the connecting arm 5 is hinged to the support frame 7, and the other end is connected to the forks 6. Connectors 1 are fixedly installed on the left and right outer sides of the support frame 7. The connector 1 includes a plate body 1a, an intermediate member 1b and a bushing 1c. One side of the intermediate member 1b is fixedly connected to the plate body 1a, and the other side is fixedly connected to the bushing 1c. The plate body 1a is provided with a socket 1d adapted to the outer periphery of the bushing 1c. After the bushing 1c is inserted into the socket 1d, the two are connected as one by a welding process.

[0040] Furthermore, in this embodiment, the plate body 1a is arranged vertically, the middle piece 1b is arranged horizontally, and the axial direction of the bushing 1c is perpendicular to the vertical direction. The rotating shaft 10 and the bushing 1c are arranged coaxially, the upper end of the rotating shaft 10 extends into the bushing 1c, and the rotating shaft 10 is provided with a shaft shoulder, through which the first bearing 11 is positioned and installed on the shaft. The outer diameter of the first bearing 11 is adapted to the inner diameter of the bushing 1c, and a retaining ring is provided between the first bearing 11 and the rotating shaft 10 and between the first bearing 11 and the bushing 1c, and an end cap 13 is detachably connected to the upper end of the bushing 1c.

[0041] Combination Figure 4-5 As shown, a second bearing 12 is provided between the moving wheel 4 and the bracket 3 .

[0042] Specifically, combined Figure 7 As shown, the connecting frame 2 includes a first fork arm 2a and a first platform 2b located between the two side walls of the first fork arm 2a, and the rotating shaft 10 is vertically installed on the first platform 2b. The connecting frame 2 also includes a second platform 2c, which is arranged between the two side walls of the first fork arm 2a. The bracket 3 includes a second fork arm 31 and a third platform 3b located between the two side walls of the second fork arm 31, and the second platform 2c and the third platform 3b are connected by a screw rod 9 with a shock absorbing spring 8.

[0043] Furthermore, in this embodiment, the two side walls of the first fork arm 2a and the first platform 2b are formed by bending the same sheet metal. The second platform 2c is fixedly installed between the two side walls of the first fork arm 2a by welding. Similarly, the two side walls of the second fork arm 31 and the third platform 3b are formed by bending the same sheet metal. The second fork arm 31 is horizontally arranged, and a moving wheel 4 is installed at one end thereof away from the third platform 3b.

[0044] Furthermore, in this embodiment, one end of the shock-absorbing spring 8 abuts against the head of the screw rod 9, and the other end abuts against the second platform 2c. The end of the screw rod 9 away from the head passes through the second platform 2c and the third platform 3b in sequence, and is fixed by a threaded nut.

[0045] Furthermore, the steering assembly of the pallet truck also includes a running wheel 15 and a motor 14 for driving the running wheel 15, and the motor 14 and the running wheel are fixedly mounted on the support frame 7. The setting of the motor 14 is used to assist the movement of the pallet truck to achieve the purpose of electric travel, saving manpower and improving work efficiency. The running wheel 15 is an off-road wheel, and the setting of the off-road wheel enables the steering assembly to travel normally on complex roads.

[0046] Combination Fig.10 As shown, in another embodiment, a pallet truck is disclosed, comprising a fork 6 and the pallet truck steering assembly described in this embodiment.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A pallet truck steering assembly, characterized in that: include: Support frame; The shock-absorbing wheels are installed on both sides of the supporting frame, and the shock-absorbing wheels include a connecting member, a connecting frame, a bracket, a movable wheel and a rotating shaft. One side of the connecting member is fixedly connected to the supporting frame, the rotating shaft is fixedly installed on the upper end of the connecting frame, and the rotating shaft is rotatably connected to the connecting member, the connecting frame is rotatably connected to the bracket, and a shock-absorbing spring is provided between the two, and the movable wheel is fixedly installed on the bracket.

2. A pallet truck steering assembly according to claim 1, characterized in that: The connecting member comprises a plate body, a middle member and a bushing, one side of the middle member is fixedly connected to the plate body, and the other side of the middle member is fixedly connected to the bushing.

3. A pallet truck steering assembly according to claim 2, characterized in that: The plate body is provided with an insertion hole adapted to the outer periphery of the bushing.

4. A pallet truck steering assembly according to claim 1, characterized in that: A first bearing is provided between the connecting member and the rotating shaft, and / or A second bearing is provided between the moving wheel and the bracket.

5. The pallet truck steering assembly according to claim 1, characterized in that: It also includes a running wheel and a motor for driving the running wheel.

6. A pallet truck steering assembly according to claim 5, characterized in that: The traveling wheels are off-road wheels.

7. A pallet truck steering assembly according to claim 1, characterized in that: The connecting frame includes a first fork arm and a first platform located between two side walls of the first fork arm, and the rotating shaft is vertically installed on the first platform.

8. A pallet truck steering assembly according to claim 7, characterized in that: The connecting frame also includes a second platform, which is arranged between two side walls of the first fork arm.

9. A pallet truck steering assembly according to claim 8, characterized in that: The bracket comprises a second fork arm and a third platform located between two side walls of the second fork arm, and the second platform and the third platform are connected by a screw rod sleeved with a shock-absorbing spring.

10. A pallet truck, characterized in that: The invention comprises a fork and a pallet truck steering assembly as claimed in any one of claims 1 to 9.