Position adjusting device and forklift

Abstract

The utility model relates to the technical field of position adjustment, and discloses a position adjusting device and a forklift, the position adjusting device has a first direction and a second direction, and the position adjusting device comprises a seat body provided with a limiting hole; the piston can move relative to the seat body; the first wedge block abuts against the side, facing the piston, of the base body and is provided with a first through hole, and the end, facing the piston, of the first wedge block is provided with a first inclined face. The second wedge block abuts against the side, facing the base body, of the piston and is provided with a second through hole, and the end, back on to the piston, of the second wedge block is provided with a second inclined face attached to the first inclined face. The locking piece comprises an abutting piece and a connecting piece which are connected, the abutting piece abuts against the side, back to the piston, of the seat body or the side, back to the piston, of the first wedge block, and the connecting piece penetrates through the limiting hole, the first through hole and the second through hole and is movably connected with the piston; the first slope is obliquely arranged relative to the first direction and the second direction, and the size of the second through hole in the second direction is larger than that of the connecting piece. The position adjusting device can adjust the relative position of the piston and the seat body.

Description

Technical Field

[0001] The utility model relates to the technical field of position adjustment, in particular to a position adjustment device and a forklift. Background Art

[0002] The gantry is the executive component of the forklift for loading, unloading, stacking and handling operations. The gantry bears the entire weight of the cargo. The lifting height of the cargo depends on the stroke of the gantry. Normally, the lifting weight of the forklift is between 1 ton and 10 tons, and the height to which the gantry needs to lift the cargo is usually between 3 meters and 6 meters.

[0003] In the related art, the gantry is connected to two lifting cylinders. Due to the existence of processing errors, it is difficult to ensure that the two lifting cylinders are equal in size. In addition, the gantry and the lifting cylinders are welded, and it is also difficult to achieve consistency in the installation positions of the two lifting cylinders on the gantry.

[0004] In the above situation, there may be a height difference between the lifting starting points of the two lifting cylinders, which will cause the two lifting cylinders to be unable to move synchronously. The two lifting cylinders may not reach the top at the same time, further causing the height of the mast to be out of sync, which may cause the goods to shake at high altitudes or even cause the goods to fall, posing a huge safety hazard to the operator.

[0005] In the related art, in order to adjust the two lifting cylinders to a synchronous state, the operator is required to insert an elastic part between the piston and the seat of the lifting cylinder. This method requires manual operation, which not only requires the cooperation of at least two operators, but is also cumbersome and easy to injure the operator's fingers, and has low safety. Utility Model Content

[0006] In view of this, the present invention provides a position adjustment device and a forklift to solve the problem of adjusting the relative position between the piston and the seat body.

[0007] In a first aspect, the utility model provides a position adjustment device having a first direction and a second direction intersecting each other, comprising: a seat body provided with a limiting hole extending along the first direction; a piston movable relative to the seat body along the first direction; a first wedge block abutting against a side of the seat body facing the piston, a first inclined surface provided at one end of the first wedge block facing the piston, and a first through hole extending along the first direction; a second wedge block abutting against a side of the piston facing the seat body, a second inclined surface provided at an end of the second wedge block facing away from the piston, the first inclined surface abutting against the second inclined surface, and the second wedge block provided with a second through hole extending along the first direction; a locking member comprising a stop member and a connecting member connected to each other, the stop member abutting against a side of the seat body facing away from the piston or a side of the first wedge block facing away from the piston, the connecting member passing through the limiting hole, the first through hole and the second through hole, and being movably connected to the piston; wherein the first inclined surface and the second inclined surface are both inclined relative to the first direction and the second direction, and the size of the second through hole in the second direction is larger than the size of the connecting member in the second direction.

[0008] Beneficial Effects: By employing the first and second wedges, not only can the seat and piston be moved closer or further apart in the first direction by controlling the translation of the first wedge in the second direction, but the relative position between the seat and piston can also be adjusted steplessly, resulting in high adjustment accuracy and a wide adjustment range. Furthermore, the seat and piston can be moved closer or further apart in the first direction simply by moving the relative position of the connector and the piston, without the need to disassemble the seat or piston for handling. This facilitates operation, reduces the risk of injury to the operator's fingers, and enhances safety.

[0009] In an optional embodiment, the position adjustment device also has a third direction intersecting with the first direction and the second direction, and the first wedge block includes: a limiting section, inserted in the limiting hole, the size of the limiting section in the second direction is smaller than the size of the limiting hole in the second direction, and larger than the size of the limiting hole in the third direction; a main body section, connected to one end of the limiting section facing the piston, and the main body section stops at the side of the seat body facing the piston.

[0010] Beneficial effect: while ensuring synchronous movement between the first wedge block and the seat body in the first direction, relative rotation between the first wedge block and the seat body can be prevented.

[0011] In an optional embodiment, the end of the limiting section facing away from the piston extends beyond the end of the seat body facing away from the piston; the position adjustment device also includes a gasket, which is located between the stop member and the end of the limiting section facing away from the piston, and covers the second through hole, and the connecting member passes through the gasket.

[0012] Beneficial effect: It can prevent the stop member from getting stuck in the first through hole, ensure the smooth movement of the first wedge block along the second direction, and facilitate adjustment of the relative position between the first wedge block and the second wedge block, thereby facilitating adjustment of the relative position of the seat body and the piston in the first direction.

[0013] In an optional embodiment, the position adjustment device further includes: an elastic member compressed between the stop member and a side of the gasket facing away from the piston.

[0014] Beneficial effects: It can fill the gap between the stop member and the limiting section, which is beneficial to ensuring the reliability of the limiting between the stop member and the limiting section, preventing the existence of a gap between the first wedge block and the stop member, and avoiding the first wedge block from shaking.

[0015] In an optional embodiment, a groove is provided at one end of the seat body facing the piston, and the first through hole is connected to the groove; the main body section is located in the groove and stops at the bottom wall of the groove; at least a portion of the second wedge block is located in the groove, and the diameter of the second wedge block is larger than the diameter of the main body section.

[0016] Advantageous Effects: Due to the smaller diameter of the main body, the gap between the inner circumference of the groove and the outer circumference of the main body is larger, which helps to increase the movable stroke between the first wedge and the second wedge. Due to the larger diameter of the second wedge, the gap between the inner circumference of the groove and the outer circumference of the second wedge is smaller, thereby stabilizing the relative position between the seat body and the second wedge in the radial direction of the seat body, and reducing the probability of relative shaking between the seat body and the second wedge.

[0017] In an optional embodiment, the side wall of the groove is provided with a through hole passing through along the second direction, and the main body section is provided with a positioning hole; the position adjustment device also includes a limiting member, which can be movably passed through the through hole and inserted into the positioning hole.

[0018] Beneficial effects: When the limiting member is inserted into the positioning hole, the relative position between the main section and the seat body can be fixed, and the relative position between the first wedge block and the seat body is also fixed; when the limiting member is moved out of the positioning hole, the first wedge block and the seat body can be relatively displaced, and the relative displacement between the first wedge block and the second wedge block can be achieved, thereby adjusting the relative position between the piston and the seat body.

[0019] In an optional embodiment, the limiting member includes: a threaded rod threadedly connected to the through hole; and a nut threadedly connected to the threaded rod and abutting against the outer peripheral surface of the seat body.

[0020] Beneficial effect: The nut and the seat body can form a "double nut" structure, which effectively fixes the position of the limit member, and further fixes the position between the first wedge block and the seat body.

[0021] In an optional embodiment, a limiting groove is provided on one end of the second wedge block facing the piston, and the piston is inserted into the limiting groove.

[0022] Beneficial effect: The relative position between the second wedge block and the piston can be limited, thereby improving the positioning accuracy between the second wedge block and the piston.

[0023] In an optional embodiment, the central axis of the second wedge block, the central axis of the piston and the central axis of the seat body are arranged to coincide with each other.

[0024] Beneficial effects: relative deflection is less likely to occur between the second wedge, the seat body and the piston, which is beneficial to reducing the shear force on the locking piece, reducing the probability of damage to the locking piece, extending the service life of the position adjustment device, and ensuring the reliability of the position adjustment device.

[0025] In a second aspect, the present invention further provides a forklift, comprising the position adjustment device described in the first aspect; an inner mast connected to the base; and an outer mast connected to the piston.

[0026] Beneficial effects: According to the embodiment of the present invention, the forklift utilizes the position adjustment device of the first aspect, which can not only adjust the relative position between the piston and the seat body, but also achieve stepless adjustment and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic structural diagram of a forklift according to an embodiment of the present utility model;

[0029] Figure 2 for Figure 1 A partial enlarged schematic diagram of area A in the middle;

[0030] Figure 3This is a cross-sectional view of a forklift according to an embodiment of the present invention;

[0031] Figure 4 for Figure 3 A partial enlarged schematic diagram of area B in the middle;

[0032] Figure 5 This is a second cross-sectional view of a forklift according to an embodiment of the present invention;

[0033] Figure 6 This is one of the structural diagrams of the seat body according to an embodiment of the present utility model;

[0034] Figure 7 This is the second structural diagram of the seat body according to an embodiment of the present utility model;

[0035] Figure 8 This is a schematic structural diagram of the first wedge block in an embodiment of the present utility model;

[0036] Figure 9 This is a schematic structural diagram of the second wedge block in an embodiment of the present utility model.

[0037] Description of reference numerals:

[0038] 1. Position adjustment device; 2. Inner mast; 3. Outer mast; 4. Forklift;

[0039] 100, seat body; 110, limiting hole; 120, groove; 130, through hole;

[0040] 200, piston; 210, threaded hole; 220, thick section; 230, thin section;

[0041] 300, first wedge; 301, first through hole; 302, first inclined surface; 303, positioning hole; 310, limiting section; 320, main section;

[0042] 400, second wedge; 401, second through hole; 402, second inclined surface; 403, limiting groove;

[0043] 500, locking member; 510, stop member; 520, connecting member; 530, gasket; 540, elastic member;

[0044] 600, stopper; 610, threaded rod; 620, nut; 630, nut;

[0045] Z, first direction; X, second direction; Y, third direction. DETAILED DESCRIPTION

[0046] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[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" and the like to indicate orientations or positional relationships based on the orientations or positional relationships 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 should not be understood as a limitation to the present invention.

[0048] In the description of the present invention, the meaning of "plurality" is two or more. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0049] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0050] The following combination Figures 1 to 9 , describing the embodiments of the present utility model.

[0051] According to an embodiment of the present invention, on the one hand, a position adjustment device 1 is provided, which has a first direction Z and a second direction X that intersect each other. The position adjustment device 1 includes a seat body 100, a piston 200, a first wedge block 300, a second wedge block 400 and a locking member 500.

[0052] The base 100 is provided with a limiting hole 110 extending along a first direction Z, and the piston 200 is movable relative to the base 100 along the first direction Z. A first wedge block 300 abuts against the side of the base 100 facing the piston 200. A first inclined surface 302 is provided on the end of the first wedge block 300 facing the piston 200. The first wedge block 300 is provided with a first through hole 301 extending along the first direction Z. A second wedge block 400 abuts against the side of the piston 200 facing the base 100. A second inclined surface 402 is provided on the end of the second wedge block 400 facing away from the piston 200. The first inclined surface 302 is in contact with the second inclined surface 402. The second wedge block 400 is provided with a second through hole 401 extending along the first direction Z. The locking member 500 includes a stop member 510 and a connecting member 520 connected to each other, the stop member 510 stops at the side of the seat body 100 facing away from the piston 200 or the side of the first wedge block 300 facing away from the piston 200, and the connecting member 520 passes through the limiting hole 110, the first through hole 301 and the second through hole 401, and is movably connected to the piston 200; wherein the first inclined surface 302 and the second inclined surface 402 are both inclined relative to the first direction Z and the second direction X, and the size of the second through hole 401 in the second direction X is larger than the size of the connecting member 520 in the second direction X.

[0053] The first inclined surface 302 is tilted relative to the first direction Z and the second direction X, which means that the first inclined surface 302 is not perpendicular or parallel to the first direction Z, and the first inclined surface 302 is not perpendicular or parallel to the second direction X. For example, along the second direction X, the distance between the first inclined surface 302 and the end of the piston 200 toward the seat body 100 gradually increases or decreases.

[0054] The second inclined surface 402 is tilted relative to the first direction Z and the second direction X, which means that the second inclined surface 402 is not perpendicular or parallel to the first direction Z, and the second inclined surface 402 is not perpendicular or parallel to the second direction X. For example, along the second direction X, the distance between the second inclined surface 402 and the end of the piston 200 toward the seat body 100 gradually increases or decreases.

[0055] Specifically, the central axis of the second wedge 400, the central axis of the base 100, and the central axis of the piston 200 are arranged to coincide. Furthermore, the central axis of the second through hole 401 and the central axis of the second wedge 400 are also arranged to coincide. This prevents relative deflection between the second wedge 400, the base 100, and the piston 200, thereby reducing shear forces on the locking member 500, lowering the probability of damage to the locking member 500, extending the service life of the position adjustment device 1, and ensuring the reliability of the position adjustment device 1.

[0056] A threaded hole 210 may be provided at one end of the piston 200 facing the seat body 100 , and the connecting piece 520 is inserted into the threaded hole 210 , so that the piston 200 and the connecting piece 520 are threadedly matched.

[0057] When the stop member 510 stops at the side of the first wedge block 300 facing away from the piston 200, it can apply pressure to the first wedge block 300 in the first direction Z so that the first inclined surface 302 and the second inclined surface 402 abut against each other, the friction between the first inclined surface 302 and the second inclined surface 402 increases, the relative position between the first wedge block 300 and the second wedge block 400 is stabilized, and the relative position between the piston 200 and the seat body 100 is stabilized; when the stop member 510 stops at the side of the seat body 100 facing away from the piston 200, it can apply pressure to the first wedge block 300 through the seat body 100 in the first direction Z so that the first inclined surface 302 and the second inclined surface 402 abut against each other, the friction between the first inclined surface 302 and the second inclined surface 402 increases, the relative position between the first wedge block 300 and the second wedge block 400 is stabilized, and the relative position between the piston 200 and the seat body 100 is stabilized.

[0058] When relative displacement of the first wedge block 300 and the second wedge block 400 is required, the relative position of the connecting member 520 and the piston 200 can be moved so that the stop member 510 stops applying pressure to the first wedge block 300. Since the size of the second through hole 401 in the second direction X is larger than the size of the connecting member 520 in the second direction X, the first wedge block 300 can move relative to the second wedge block 400 along the second direction X. Through the cooperation of the first inclined surface 302 and the second inclined surface 402, the first wedge block 300 and the piston 200 can be moved closer to or farther away from each other in the first direction Z, thereby achieving the mutual approach or distance between the seat body 100 and the piston 200 in the first direction Z. When the seat body 100 and the piston 200 are in a preset relative position, the relative position of the connecting member 520 and the piston 200 can be moved so that the stop member 510 applies pressure to the first wedge block 300, thereby fixing the relative position of the first wedge block 300 and the second wedge block 400, so that the relative position of the seat body 100 and the piston 200 is fixed.

[0059] By adopting the first wedge block 300 and the second wedge block 400, not only can the first wedge block 300 be controlled to translate along the second direction X to achieve the mutual approach or distance between the seat body 100 and the piston 200 in the first direction Z, but also the seat body 100 and the piston 200 are steplessly adjusted with high adjustment accuracy and a large adjustable range.

[0060] In addition, the seat body 100 and the piston 200 can be moved closer to or farther away from each other in the first direction Z only by moving the relative positions of the connecting member 520 and the piston 200. There is no need to disassemble the seat body 100 or the piston 200 for processing, which facilitates operation and reduces the probability of injuring the operator's fingers, thereby increasing safety.

[0061] like Figure 3-Figure 8As shown, in the technical solution of this embodiment, the position adjustment device 1 further has a third direction Y intersecting with the first direction Z and the second direction X. The first wedge 300 includes a limiting section 310 and a main section 320. The limiting section 310 is inserted into the limiting hole 110. The dimension of the limiting section 310 in the second direction X is smaller than the dimension of the limiting hole 110 in the second direction X, and the dimension of the limiting section 310 in the second direction X is larger than the dimension of the limiting hole 110 in the third direction Y. The main section 320 is connected to the end of the limiting section 310 facing the piston 200 and abuts against the side of the base 100 facing the piston 200.

[0062] The limiting section 310 cooperates with the limiting hole 110 to prevent relative rotation between the first wedge 300 and the seat body 100. The main section 320 ensures the relative position of the first wedge 300 and the seat body 100 in the first direction Z, thereby ensuring that the first wedge 300 and the seat body 100 can move synchronously in the first direction Z. Adjusting the positions of the first wedge 300 and the second wedge 400 in the second direction X can adjust the relative positions of the seat body 100 and the piston 200 in the first direction Z.

[0063] In addition, the gap between the limiting section 310 and the limiting hole 110 in the third direction Y is reduced, which can fix the relative position between the first wedge block 300 and the seat body 100 in the third direction Y, avoid the first wedge block 300 and the seat body 100 from shaking, and help to ensure the reliability of the relative position of the first wedge block 300 and the seat body 100, and avoid the locking member 500 from being subjected to shear force, thereby reducing the probability of damage to the locking member 500.

[0064] like Figure 1-Figure 5 As shown, in the technical solution of this embodiment, one end of the limiting section 310 facing away from the piston 200 extends beyond the other end of the seat body 100 facing away from the piston 200, and the position adjustment device 1 further includes a gasket 530, which is located between the stop member 510 and the end of the limiting section 310 facing away from the piston 200, and is covered in the second through hole 401, and the connecting member 520 is passed through the gasket 530.

[0065] The dimension of the gasket 530 in the third direction Y is larger than the dimension of the second through hole 401 in the third direction Y, so as to prevent the gasket 530 from being stuck in the second through hole 401 .

[0066] By setting the gasket 530, the stop member 510 can be prevented from being stuck in the first through hole 301, ensuring smooth movement of the first wedge block 300 along the second direction X, which is beneficial to adjusting the relative position between the first wedge block 300 and the second wedge block 400, thereby facilitating adjustment of the relative position of the seat body 100 and the piston 200 in the first direction Z.

[0067] Furthermore, the position adjustment device 1 further includes an elastic member 540, which is compressed between the stop member 510 and the end of the limiting section 310 facing away from the piston 200. The elastic member 540 can be a gasket, a silicone member, or a rubber member.

[0068] By setting the elastic member 540, the gap between the stop member 510 and the limiting section 310 can be filled, which is conducive to ensuring the reliability of the limitation between the stop member 510 and the limiting section 310, preventing the existence of a gap between the first wedge block 300 and the stop member 510, and avoiding the first wedge block 300 from shaking.

[0069] like Figure 3-Figure 7 As shown, in the technical solution of this embodiment, a groove 120 is provided at one end of the seat body 100 facing the piston 200, the first through hole 301 is connected to the groove 120, the main body section 320 is located in the groove 120 and stops at the bottom wall of the groove 120, at least a portion of the second wedge block 400 is located in the groove 120, and the diameter of the second wedge block 400 is larger than the diameter of the main body section 320.

[0070] Since the diameter of the main section 320 is small, the gap between the inner circumference of the groove 120 and the outer circumference of the main section 320 is large, and the main section 320 has a larger movable space along the second direction X in the groove 120, which is conducive to increasing the movable stroke between the first wedge block 300 and the second wedge block 400, thereby increasing the relative displacement stroke between the piston 200 and the seat body 100 in the first direction Z.

[0071] Since the diameter of the second wedge block 400 is larger, the gap between the inner circumference of the groove 120 and the outer circumference of the second wedge block 400 is smaller, and thus the relative position between the seat body 100 and the second wedge block 400 in the radial direction of the seat body 100 is stable, which can reduce the probability of relative shaking between the seat body 100 and the second wedge block 400, so that the seat body 100 and the second wedge block 400 mainly move relative to each other along the first direction Z, which is beneficial to ensure the relative position stability between the seat body 100 and the piston 200, and avoid the locking member 500 from being subjected to shear force, thereby reducing the probability of damage to the locking member 500.

[0072] like Figure 3-Figure 8 As shown, in the technical solution of this embodiment, the sidewall of the groove 120 is provided with a through hole 130 extending along the second direction X, and the main body section 320 is provided with a positioning hole 303, wherein the positioning hole 303 can be a blind hole or a through hole. The position adjustment device 1 also includes a stopper 600, which can be movably passed through the through hole 130 and inserted into the positioning hole 303.

[0073] By setting the limit member 600, when the limit member 600 is inserted into the positioning hole 303, the relative position between the main section 320 and the seat body 100 can be fixed, and the relative position between the first wedge block 300 and the seat body 100 is also fixed; when the limit member 600 moves out of the positioning hole 303, the first wedge block 300 and the seat body 100 can be relatively displaced, and the relative displacement between the first wedge block 300 and the second wedge block 400 can be achieved, thereby adjusting the relative position between the piston 200 and the seat body 100.

[0074] Furthermore, the limiting member 600 includes a threaded rod 610 and a nut 630. The threaded rod 610 is threadedly connected to the through hole 130, and the nut 630 is threadedly connected to the threaded rod 610 and abuts against the outer peripheral surface of the base body 100.

[0075] Specifically, when the relative position between the limiting member 600 and the first wedge block 300 needs to be adjusted, the pressure of the locking member 500 on the first wedge block 300 and the second wedge block 400 is first released, and then the nut 630 can be rotated to separate the nut 630 from the base body 100. Finally, the threaded rod 610 can be rotated to remove the threaded rod 610 from the positioning hole 303. At this time, the relative position of the first wedge block 300 and the base body 100 can be moved.

[0076] When the relative position between the limit member 600 and the first wedge block 300 is adjusted, the threaded rod 610 can be rotated first and inserted into the positioning hole 303. Then the nut 630 can be rotated to stop the nut 630 against the seat body 100. Finally, the locking member 500 applies pressure to the first wedge block 300 and the second wedge block 400. At this time, the nut 630 and the seat body 100 can form a "double nut" structure, which effectively fixes the position of the limit member 600, and then fixes the position between the first wedge block 300 and the seat body 100.

[0077] Among them, the limiting member 600 also includes a nut 620, which is connected to the screw rod. The nut 620 is located on the side of the nut 630 facing away from the seat body 100. The nut 620 and the nut 630 can be arranged at intervals, and the screw rod can be applied with a rotational force through the nut 620.

[0078] like Figure 3 、 Figure 4 and Figure 9 As shown, in the technical solution of this embodiment, a limiting groove 403 is provided on the end of the second wedge block 400 facing the piston 200, and the piston 200 is inserted into the limiting groove 403. In this way, the relative position between the second wedge block 400 and the piston 200 can be defined, thereby improving the positioning accuracy between the second wedge block 400 and the piston 200.

[0079] For example, the piston 200 may include a thick section 220 and a thin section 230, the thin section 230 is inserted into the limiting groove 403, the diameter of the thick section 220 is larger than the diameter of the thin section 230, the thick section 220 is connected to the end of the thin section 230 facing away from the second wedge block 400, wherein the central axis of the thin section 230 and the central axis of the thick section 220 can be arranged to coincide, and a threaded hole 210 is provided at the end of the thin section 230 facing the second wedge block 400.

[0080] According to an embodiment of the present invention, on the other hand, a forklift 4 is also provided, comprising the above-mentioned position adjustment device 1, an inner mast 2, and an outer mast 3. The inner mast 2 is connected to the base 100, and the outer mast 3 is connected to the piston 200. The outer mast 3 can be connected to the body of the forklift 4, and the inner mast 2 is connected to a fork for carrying cargo. Furthermore, the base 100 and the piston 200 can be part of a lifting cylinder. The movement of the piston 200 relative to the base 100 can drive the inner mast 2 to move up and down relative to the outer mast 3, thereby enabling the forklift 4 to load, unload, stack, and transport cargo.

[0081] According to the forklift 4 of the embodiment of the present invention, the position adjustment device 1 is used, which can not only adjust the relative position between the piston 200 and the seat 100, but also achieve stepless adjustment and high safety.

[0082] The working process of the forklift 4 is described below:

[0083] Debug the inner mast 2. If it is detected that the lifting of the inner mast 2 is not synchronized, the relative position between the piston 200 and the seat 100 needs to be adjusted by the position adjustment device 1. The specific method is as follows:

[0084] First, the connecting member 520 is rotated to stop the stop member 510 from applying pressure to the first wedge block 300;

[0085] Then, the nut 620 is rotated to separate the nut 620 from the outer circumference of the base body 100. At this time, the threaded rod 610 can rotate relative to the base body 100, and the threaded rod 610 can push the first wedge 300 to move or move out of the positioning hole 303.

[0086] Next, the relative positions of the first wedge block 300 and the second wedge block 400 are moved along the second direction X, so that the piston 200 and the seat body 100 are moved closer to or farther away from each other in the first direction Z;

[0087] Then, when the piston 200 and the base body 100 are adjusted to a predetermined relative position, the threaded rod 610 is inserted into the positioning hole 303, the nut 620 is rotated to abut against the outer circumference of the base body 100, and the connecting member 520 is rotated to apply pressure to the first wedge block 300, thereby fixing the relative position between the first wedge block 300 and the second wedge block 400, thereby fixing the relative position of the piston 200 and the base body 100;

[0088] Finally, debug the inner mast 2 again and repeat the above steps until the inner mast 2 is lifted synchronously.

[0089] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A position adjustment device having a first direction (Z) and a second direction (X) intersecting each other, characterized in that: include: The seat body (100) is provided with a limiting hole (110) penetrating along the first direction (Z); a piston (200) movable relative to the seat (100) along the first direction (Z); A first wedge block (300) is abutted against a side of the seat body (100) facing the piston (200), a first inclined surface (302) is provided on one end of the first wedge block (300) facing the piston (200), and a first through hole (301) is provided on the first wedge block (300) extending along the first direction (Z); A second wedge block (400) is abutted against a side of the piston (200) facing the seat body (100); a second inclined surface (402) is provided on an end of the second wedge block (400) facing away from the piston (200); the first inclined surface (302) is in contact with the second inclined surface (402); and the second wedge block (400) is provided with a second through hole (401) extending along the first direction (Z); The locking member (500) includes a stop member (510) and a connecting member (520) connected to each other, wherein the stop member (510) stops at a side of the seat (100) facing away from the piston (200) or a side of the first wedge (300) facing away from the piston (200), and the connecting member (520) passes through the limiting hole (110), the first through hole (301) and the second through hole (401), and is movably connected to the piston (200); The first inclined surface (302) and the second inclined surface (402) are both arranged to be inclined relative to the first direction (Z) and the second direction (X), and the size of the second through hole (401) in the second direction (X) is larger than the size of the connecting member (520) in the second direction (X).

2. The position adjustment device according to claim 1, characterized in that: Also having a third direction (Y) intersecting the first direction (Z) and the second direction (X), the first wedge (300) includes: a limiting section (310) inserted into the limiting hole (110), wherein the size of the limiting section (310) in the second direction (X) is smaller than the size of the limiting hole (110) in the second direction (X), and larger than the size of the limiting hole (110) in the third direction (Y); The main body section (320) is connected to one end of the limiting section (310) facing the piston (200), and the main body section (320) abuts against one side of the seat body (100) facing the piston (200).

3. The position adjustment device according to claim 2, characterized in that: An end of the limiting section (310) facing away from the piston (200) extends beyond an end of the seat body (100) facing away from the piston (200); The position adjustment device (1) further includes a gasket (530), which is located between the stop member (510) and an end of the limiting section (310) facing away from the piston (200), and covers the second through hole (401), and the connecting member (520) is passed through the gasket (530).

4. The position adjustment device according to claim 3, characterized in that: Also includes: The elastic member (540) is compressed between the stop member (510) and the side of the gasket (530) facing away from the piston (200).

5. The position adjustment device according to claim 2, characterized in that: A groove (120) is provided on one end of the seat body (100) facing the piston (200), and the first through hole (301) is in communication with the groove (120); The main body section (320) is located in the groove (120) and abuts against the bottom wall of the groove (120); At least a portion of the second wedge block (400) is located in the groove (120), and the diameter of the second wedge block (400) is greater than the diameter of the main body section (320).

6. The position adjustment device according to claim 5, characterized in that: The side wall of the groove (120) is provided with a through hole (130) penetrating along the second direction (X), and the main body section (320) is provided with a positioning hole (303); The position adjustment device (1) further comprises a limiting member (600), wherein the limiting member (600) is movably passed through the through hole (130) and inserted into the positioning hole (303).

7. The position adjustment device according to claim 6, characterized in that: The limiting member (600) comprises: a threaded rod (610) threadedly connected to the through hole (130); The nut (630) is threadedly connected to the threaded rod (610) and abuts against the outer peripheral surface of the seat (100).

8. The position adjustment device according to any one of claims 1 to 7, characterized in that: A limiting groove (403) is provided on one end of the second wedge block (400) facing the piston (200), and the piston (200) is inserted into the limiting groove (403).

9. The position adjustment device according to any one of claims 1 to 7, characterized in that: The central axis of the second wedge (400), the central axis of the piston (200) and the central axis of the seat (100) are arranged to coincide with each other.

10. A forklift, characterized in that: include; The position adjustment device (1) according to any one of claims 1 to 9; An inner door frame (2) connected to the seat body (100); The outer door frame (3) is connected to the piston (200).

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