Steering gear box and electric forklift

Abstract

The utility model relates to the technical field of electric forklifts, and discloses a steering gear box and an electric forklift. The steering gear box comprises a tubular column assembly and an angle adjusting component. The tubular column assembly comprises a shell and a tubular column assembly. The shell has an accommodating space; the tubular column assembly is arranged in the containing space and connected with the shell. One end of the angle adjusting part is connected with the tubular column assembly, and the other end of the angle adjusting part extends to the outer side of the shell; the angle adjusting component is provided with a first position and a second position in the front-back direction; when the angle adjusting component is switched between the first position and the second position, the pipe column assembly is driven to conduct angle adjustment in the front-back direction. The steering gear box solves the problems that in the prior art, a steering gear box for an electric forklift is poor in sealing performance, poor in integrity and not attractive enough.

Description

Technical Field

[0001] The utility model relates to the technical field of electric forklifts, in particular to a steering machine and an electric forklift. Background Art

[0002] The steering machine, also known as the steering gear, is a machine that helps the driver to exert force while turning the steering wheel, so as to reduce the driver's steering force and make driving easier and more convenient for the driver. It is mainly divided into rack and pinion steering and worm gear steering.

[0003] The steering gear used in the electric forklift industry usually needs to be adjustable front and back. However, the current steering gears for electric forklifts have problems such as poor sealing, poor integrity, and poor appearance. Therefore, how to improve the sealing, integrity and aesthetics of the steering gears for electric forklifts is an issue that the industry needs to solve urgently. Utility Model Content

[0004] The utility model provides a steering machine and an electric forklift, which are used to solve the problems of poor sealing, poor integrity and poor appearance of the steering machine for the electric forklift in the prior art.

[0005] The utility model provides a steering machine, which comprises the following steps.

[0006] The pipe column assembly comprises a housing and a pipe column component; the housing has a receiving space; the pipe column component is arranged in the receiving space and connected to the housing;

[0007] An angle adjustment component, one end of which is connected to the column assembly, and the other end of which extends to the outside of the housing;

[0008] Along the front-to-back direction, the angle adjustment component has a first position and a second position; when the angle adjustment component switches between the first position and the second position, the column assembly is driven to adjust the angle along the front-to-back direction.

[0009] According to the steering machine provided by the utility model, the angle adjustment component includes:

[0010] A first connecting piece connected to the pipe column assembly; the first connecting piece is provided with a threaded hole along the left-right direction;

[0011] A second connecting member is provided on one side of the first connecting member along the left-right direction, and the second connecting member is used to be connected to the fixed base; along the front-back direction, the second connecting member is provided with a long waist hole;

[0012] A limit connection assembly, one end of which passes through the long waist hole and is threadedly connected to the threaded hole, and the other end extends to the outside of the shell; the limit connection assembly and the long waist hole are slidably matched along the front-to-back direction to enable the angle adjustment component to switch between the first position and the second position, and the limit connection assembly also cooperates with the long waist hole in a limit position along the left-right direction to lock the column assembly at a target angle.

[0013] According to the steering machine provided by the utility model, the limit connection assembly includes:

[0014] A connecting rod is slidably matched with the long waist hole along the front-back direction, and one end of the connecting rod is threadedly connected with the threaded hole;

[0015] A limit operating member is located on a side of the second connecting member away from the first connecting member, one end of the limit operating member is connected to the other end of the connecting rod, and the other end of the limit operating member extends to the outside of the shell, and is used to lock the column assembly at a target angle.

[0016] According to the steering machine provided by the utility model, the limit operating member includes:

[0017] a handle located on the outer side of the housing;

[0018] A limiting column, wherein the first end face of the limiting column facing the second connecting member is connected to the other end of the connecting rod; the area of ​​the first end face is larger than the radial dimension of the long waist hole in the up and down directions; the end of the limiting column away from the first end face is connected to the handle.

[0019] According to the steering machine provided by the utility model, the central axis of the long waist hole along the front-to-back direction is arc-shaped.

[0020] According to the steering machine provided by the utility model, the second connecting member is formed on a side of the fixed base facing the column assembly.

[0021] According to the steering machine provided by the utility model, the second connecting member is an arc-shaped connecting plate.

[0022] According to the steering machine provided by the utility model, the column assembly includes:

[0023] A pipe column body, a side surface of which is connected to one end of the angle adjustment component;

[0024] The pipe column base is connected to the lower end of the pipe column body, and the pipe column base is used to be hinged with the fixed base.

[0025] The steering machine provided by the utility model also includes:

[0026] The steering wheel is located outside the column assembly and connected to the upper end of the column body.

[0027] The utility model also provides an electric forklift, comprising any one of the steering machines described above.

[0028] The steering machine provided by the utility model can form a receiving space by arranging a shell on the outside of the column assembly, provide installation space for the angle adjustment component, and make the overall appearance of the steering machine more beautiful. By arranging an angle adjustment component with a first position and a second position in the receiving space, and one end of the angle adjustment component is connected to the column assembly, and the other end extends to the outside of the shell through the shell, the angle adjustment component can be operated to switch between the first position and the second position, thereby driving the entire column assembly to adjust the angle in the front-to-back direction, avoiding the need to open a long waist hole on the shell, and improving the sealing and integrity of the whole machine. The problems of poor sealing, poor integrity and lack of beauty of the steering machine for electric forklifts in the prior art are solved.

[0029] The electric forklift of the utility model includes the above-mentioned steering machine, and thus has at least the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is one of the structural schematic diagrams of the steering machine provided by the utility model.

[0032] Figure 2 This is the second structural schematic diagram of the steering machine provided by the utility model.

[0033] Figure 3 This is the third structural schematic diagram of the steering machine provided by the utility model.

[0034] Figure 4 This is the fourth structural schematic diagram of the steering machine provided by the utility model.

[0035] Reference numerals:

[0036] 100, pipe column assembly; 110, housing; 120, pipe column assembly; 121, pipe column body; 122, pipe column base; 123, horizontal connecting plate; 124, vertical connecting plate;

[0037] 200, angle adjustment component; 201, long waist hole; 210, first connecting member; 220, second connecting member; 230, limit connection assembly; 231, connecting rod; 232, limit operating member; 233, handle; 234, limit column;

[0038] 300, fixed base;

[0039] 400. Steering wheel. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are 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.

[0041] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, 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, and therefore cannot be understood as a limitation on the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0043] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the 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, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0044] 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 embodiment. 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, without contradiction.

[0045] The steering gear used in the current electric forklift industry usually needs to be adjustable in front and rear angles. The current steering gear usually has a connector on the column with a long waist hole; the handle is set on the base, and by operating the handle, the handle moves forward and backward along the waist hole, thereby adjusting the front and rear angle of the steering gear. This design will inevitably require the design of a long waist hole for the appearance of the steering gear, making the appearance of the steering gear look poorly sealed, poorly complete, and not beautiful enough.

[0046] In order to improve the sealing, integrity and aesthetics of the steering machine, the utility model provides a new type of steering machine. Figures 1 to 4 The steering machine of the utility model is described in detail.

[0047] like Figures 1 to 4 As shown, a specific embodiment of the first aspect of the utility model provides a steering gear, which includes a column assembly 100 and an angle adjustment component 200 .

[0048] The column assembly 100 includes a housing 110 and a column assembly 120; the housing 110 has a receiving space; the column assembly 120 is disposed in the receiving space and connected to the housing 110. One end of the angle adjustment component 200 is connected to the column assembly 120, and the other end of the angle adjustment component 200 extends to the outside of the housing 110; along the front-to-back direction, the angle adjustment component 200 has a first position and a second position; when the angle adjustment component 200 switches between the first position and the second position, the column assembly 100 is driven to adjust the angle along the front-to-back direction.

[0049] In this embodiment, by setting the outer shell 110 on the outside of the column assembly 120, a receiving space can be formed to provide an installation space for the angle adjustment component 200, so that the overall appearance of the steering machine is more beautiful. By setting the angle adjustment component 200 with a first position and a second position in the receiving space, and one end of the angle adjustment component 200 is connected to the column assembly 120, and the other end passes through the outer shell 110 and extends to the outside of the outer shell 110, the angle adjustment component 200 can be operated to switch between the first position and the second position, thereby driving the entire column assembly 100 to adjust the angle in the front and rear directions, which can avoid opening a long waist hole on the outer shell 110, and improve the sealing and integrity of the whole machine. The problems of poor sealing, poor integrity and poor appearance of the steering machine for electric forklifts in the prior art are solved.

[0050] Furthermore, the housing 110 is provided with a through hole, and the through hole allows the angle adjustment component 200 to pass through the housing 110 in the left-right direction. In other words, when the angle adjustment component 200 switches between the first position and the second position, the angle adjustment component 200 drives the column assembly 120 and the housing 110 to move synchronously, so that the angle of the whole machine can be adjusted in the front-back direction.

[0051] like Figure 2 and Figure 3 As shown, in some embodiments, the column assembly 120 includes a column body 121 and a column base 122; the side of the column body 121 is connected to one end of the angle adjustment component 200. The column base 122 is connected to the lower end of the column body 121, and the column base 122 is used to be hinged with the fixed base 300. When the angle adjustment component 200 is switched between the first position and the second position, the angle adjustment component 200 drives the column assembly 100 to adjust the angle along the front-rear direction relative to the fixed base 300.

[0052] It can be understood that the hinge axis between the column base 122 and the fixed base 300 is arranged along the left-right direction. In other words, the central axis of the hinge axis is parallel to the left-right direction.

[0053] like Figure 3As shown, specifically, the column base 122 includes a horizontal connecting plate 123 and two vertical connecting plates 124; the two vertical connecting plates 124 are arranged in the left and right directions respectively, and the upper ends of the two vertical connecting plates 124 are respectively connected to the left and right sides of the horizontal connecting plate 123, and the lower ends of the two vertical connecting plates 124 are provided with rotating shaft holes in the left and right directions, and hinge shafts are installed in the rotating shaft holes, and the vertical connecting plates 124 are hinged to the fixed base 300 through the hinge shafts. The lower end of the column body 121 is connected to the horizontal connecting plate 123. Preferably, the column body 121 and the horizontal connecting plate 123 can be connected through a universal shaft; in other words, the column body 121 can rotate relative to the horizontal connecting plate 123.

[0054] Furthermore, the column body 121 is a cylindrical column structure.

[0055] It can be understood that the fixing base 300 is used to be installed on the body of the electric forklift.

[0056] In some embodiments, the steering machine further includes a steering wheel 400; the steering wheel 400 is located outside the column assembly 100 and is connected to the upper end of the column body 121. The driving direction of the electric forklift can be changed by operating the steering wheel 400. The structure of the steering wheel 400 and the connection method between the steering wheel 400 and the column body 121 belong to the existing technology in the industry and will not be described again.

[0057] like Figures 2 to 4 As shown, in some embodiments, the angle adjustment component 200 includes a first connecting member 210 , a second connecting member 220 and a limiting connecting assembly 230 .

[0058] Among them, the first connecting member 210 is connected to the column assembly 120; along the left-right direction, the first connecting member 210 is provided with a threaded hole. Along the left-right direction, the second connecting member 220 is arranged on one side of the first connecting member 210, and the second connecting member 220 is used to connect with the fixed base 300; along the front-back direction, the second connecting member 220 is provided with a long waist hole 201. One end of the limit connection component 230 passes through the long waist hole 201 and is threadedly connected to the threaded hole, and the other end extends to the outside of the shell 110; the limit connection component 230 and the long waist hole 201 slide in the front-back direction to switch the angle adjustment component 200 between the first position and the second position; the limit connection component 230 also cooperates with the long waist hole 201 in the left-right direction to lock the column assembly at the target angle. It can be understood that the first position and the second position can refer to the front end and the rear end of the long waist hole 201, respectively.

[0059] In this embodiment, by providing a first connector 210 with a threaded hole, it is possible to avoid opening a threaded hole on the pipe column assembly 120, thereby ensuring the integrity of the pipe column assembly 120 and the mechanical strength of the pipe column assembly 120. By providing a second connector 220 for connecting to the fixed base 300, and providing a long waist hole 201 on the second connector 220 along the front-to-back direction, the existing fixed base 300 can be used as a support for the second connector 220, thereby avoiding opening a long waist hole 201 on the housing 110, thereby improving the sealing and integrity of the whole machine, and making the appearance of the whole machine more beautiful. By providing a limit connection assembly 230 that is slidably matched with the long waist hole 201, and one end of the limit connection assembly is threadedly connected to the threaded hole, and the other end extends to the outside of the housing 110, the limit connection assembly 230 can be operated to make the limit connection assembly 230 slide forward and backward along the long waist hole 201, thereby driving the pipe column assembly 100 to adjust the angle along the front-to-back direction. The limiting connection assembly 230 can also be operated to limit the position of the limiting connection assembly 230 and the long waist hole 201 along the left-right direction to lock the column assembly 100 at a target angle.

[0060] It should be noted that the axial dimension of the long waist hole 201 in the front-to-back direction is greater than the radial dimension in the up-down direction.

[0061] Specifically, the central axis of the long waist hole 201 along the front-to-back direction can be a straight line or an arc. Preferably, the central axis of the long waist hole 201 along the front-to-back direction is an arc, so that the arc route extending along the front-to-back direction of the pipe column assembly 100 can be adjusted in angle, which is more in line with actual working conditions.

[0062] Specifically, the first connecting member 210 is connected to a side surface of the column body 121 .

[0063] Exemplarily, the second connector 220 is connected to the side of the fixed base 300 facing the column assembly 100 by welding, or connected together by a connecting structure. It can be understood that the connecting structure includes but is not limited to a threaded nut connection or a clamping connection. In this embodiment, the specific form of the connecting structure is not limited, as long as the second connector 220 can be connected to the fixed base 300.

[0064] Exemplarily, the second connector 220 is formed on the side of the fixed base 300 facing the column assembly 100. Specifically, the fixed base 300 has a connecting end on the side facing the column assembly 100, and the second connector 220 can be formed by extending the connecting end in the front-rear direction.

[0065] Further, the second connecting member 220 is an arc-shaped connecting plate, which is formed at the connecting end of the fixed base 300. The arc-shaped connecting plate can avoid interference with the column assembly 100 that is adjusted along an arc route.

[0066] like Figure 4 As shown, in some embodiments, the position limiting connection assembly 230 includes a connection rod 231 and a position limiting operating member 232 .

[0067] The connecting rod 231 is slidably matched with the long waist hole 201 in the front-to-back direction, and one end of the connecting rod 231 is threadedly connected with the threaded hole. The limit operating member 232 is located on the side of the second connecting member 220 away from the first connecting member 210, one end of the limit operating member 232 is connected to the other end of the connecting rod 231, and the other end of the limit operating member 232 extends to the outside of the housing 110, which is used to lock the column assembly 100 at the target angle.

[0068] In this embodiment, by setting the second connecting member 220 between the first connecting member 210 and the limit operating member 232, and one end of the connecting rod 231 is threadedly connected to the threaded hole of the first connecting member 210, and the other end of the connecting rod 231 is connected to the limit operating member 232, the depth of the connecting rod 231 in the threaded hole can be adjusted so that the limit connecting assembly 230 can stay at any position of the long waist hole 201, thereby realizing the locking of the column assembly 100 at any angle, avoiding the setting of a special locking structure, simplifying the structure of the whole machine, and reducing the cost of the whole machine.

[0069] Specifically, when the angle of the pipe column assembly 100 along the front-to-back direction needs to be adjusted, the limit operating member 232 can be manipulated to screw the connecting rod 231 out of the threaded hole, that is, the connecting rod 231 can be loosened, at which time the clamping force of the first connecting member 210 and the limit operating member 232 on the second connecting member 220 is reduced, and then the limit operating member 232 is applied along the front-to-back direction, so that the limit operating member 232 drives the connecting rod 231 to move along the front-to-back direction of the long waist hole 201. When the pipe column assembly 100 is adjusted to the target angle along the front-to-back direction, the limit operating member 232 can be manipulated to screw the connecting rod 231 into the threaded hole, that is, the connecting rod 231 can be tightened, at which time the clamping force of the first connecting member 210 and the limit operating member 232 on the second connecting member 220 is increased to clamp the second connecting member 220 and prevent the connecting rod 231 from moving along the long waist hole 201 along the front-to-back direction.

[0070] Furthermore, the connecting rod 231 may be a screw or a jackscrew.

[0071] like Figure 4 As shown, further, the limiting operating member 232 includes a handle 233 and a limiting column 234. The handle 233 is located outside the housing 110. The limiting column 234 is connected to the other end of the connecting rod 231 at a first end surface facing the second connecting member 220; the area of ​​the first end surface is larger than the radial dimension of the long waist hole 201 in the up and down direction; and the end of the limiting column 234 away from the first end surface is connected to the handle 233.

[0072] In this embodiment, the convenience of operation can be improved by providing a handle 233 on the outside of the housing 110. By providing a limiting column 234, and the area of ​​the first end surface of the limiting column 234 is larger than the radial dimension of the long waist hole 201 in the vertical direction, the second connecting member 220 can be limited in the left and right direction, further simplifying the structure of the limiting operating member 232 and reducing the cost.

[0073] For example, a threaded assembly hole is formed in the limit column 234 along the left-right direction, and the top screw is threadedly assembled in the threaded assembly hole. The right end of the top screw passes through the threaded assembly hole and is threadedly connected to the threaded hole. By adjusting the depth of the top screw in the threaded hole along the left-right direction, the second connecting member 220 can be locked or loosened.

[0074] Exemplarily, the first end surface of the limiting column 234 is fixedly connected to a screw rod, and the screw rod passes through the long waist hole 201 and is threadedly connected to the threaded hole of the first connecting member 210 .

[0075] A specific embodiment of the second aspect of the utility model provides an electric forklift, which includes a steering gear in any of the above embodiments.

[0076] Since the electric forklift of this embodiment includes the steering gear of any of the above embodiments, it has at least the above advantages, which will not be described in detail here.

[0077] Further, the electric forklift also includes a vehicle body, which is connected to the steering machine via a fixed base 300. That is, the fixed base 300 is installed on the vehicle body and is also hinged to the column assembly 100 of the steering machine.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A steering machine, characterized in that: include: A pipe column assembly (100) comprises a housing (110) and a pipe column component (120); the housing (110) has a receiving space; the pipe column component (120) is arranged in the receiving space and connected to the housing (110); an angle adjustment component (200), one end of the angle adjustment component (200) being connected to the pipe column assembly (120), and the other end of the angle adjustment component (200) extending to the outside of the housing (110); Along the front-rear direction, the angle adjustment component (200) has a first position and a second position; when the angle adjustment component (200) switches between the first position and the second position, it drives the column assembly (100) to adjust the angle along the front-rear direction.

2. The steering machine according to claim 1, characterized in that: The angle adjustment component (200) comprises: A first connecting member (210) is connected to the pipe column assembly (120); the first connecting member (210) is provided with a threaded hole in the left-right direction; A second connecting member (220) is arranged on one side of the first connecting member (210) along the left-right direction, and the second connecting member (220) is used to be connected to the fixed base (300); along the front-back direction, the second connecting member (220) is provided with a long waist hole (201); A limit connection assembly (230), one end of which passes through the long waist hole (201) and is threadedly connected to the threaded hole, and the other end of which extends to the outside of the housing (110); the limit connection assembly (230) and the long waist hole (201) are slidably matched along the front-to-back direction to enable the angle adjustment component (200) to switch between the first position and the second position; the limit connection assembly (230) is also limitably matched with the long waist hole (201) along the left-right direction to lock the column assembly (100) at a target angle.

3. The steering machine according to claim 2, characterized in that: The limiting connection assembly (230) comprises: A connecting rod (231) is slidably matched with the long waist hole (201) along the front-rear direction, and one end of the connecting rod (231) is threadedly connected to the threaded hole; A limit operating member (232) is located on a side of the second connecting member (220) away from the first connecting member (210), one end of the limit operating member (232) is connected to the other end of the connecting rod (231), and the other end of the limit operating member (232) extends to the outside of the housing (110), and is used to lock the column assembly (100) at a target angle.

4. The steering machine according to claim 3, characterized in that: The position limiting operating member (232) comprises: A handle (233) located on the outside of the housing (110); A limiting column (234), wherein the limiting column (234) is connected to the other end of the connecting rod (231) with a first end surface facing the second connecting member (220); the area of ​​the first end surface is larger than the radial dimension of the long waist hole (201) in the up and down directions; and the end of the limiting column (234) away from the first end surface is connected to the handle (233).

5. The steering machine according to claim 2, characterized in that: The central axis of the long waist hole (201) along the front-to-back direction is arc-shaped.

6. The steering machine according to claim 5, characterized in that: The second connecting member (220) is formed on a side of the fixed base (300) facing the pipe column assembly (100).

7. The steering machine according to claim 6, characterized in that: The second connecting member (220) is an arc-shaped connecting plate.

8. The steering machine according to any one of claims 1 to 7, characterized in that: The pipe column assembly (120) comprises: A pipe column body (121), wherein a side surface of the pipe column body (121) is connected to one end of the angle adjustment component (200); A pipe column base (122) is connected to the lower end of the pipe column body (121), and the pipe column base (122) is used to be hinged to the fixed base (300).

9. The steering machine according to claim 8, characterized in that: Also includes: A steering wheel (400) is located outside the column assembly (100) and is connected to the upper end of the column body (121).

10. An electric forklift, characterized in that: A steering machine comprising the steering machine described in any one of claims 1 to 9.

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