A guide wheel adjusting mechanism for a narrow-aisle fork truck

Abstract

The utility model discloses a kind of guiding wheel adjusting mechanism suitable for narrow channel fork truck, including guiding wheel support, guiding wheel support is fixedly connected in the bottom of both sides of fork truck by inner adjusting gasket, outer adjusting gasket and connecting bolt;The front end of guiding wheel support is vertically provided with shaft hole, the front end of guiding wheel support is provided with through gap along the axial direction of shaft hole, guiding wheel support is provided with screw hole;Guiding wheel shaft is provided with the tight lock by being connected with screw hole in screw thread in shaft hole through locking bolt;The bottom end of guiding wheel shaft is fixedly connected with bottom wheel shaft, the central axis of guiding wheel shaft does not coincide with the central axis of bottom wheel shaft, guiding wheel is rotatably connected on bottom wheel shaft.The device utilizes that inner adjusting gasket and outer adjusting gasket can be interchanged, successfully realizes the coarse adjustment of guiding wheel outside distance, and operation convenience is improved, simultaneously, the central axis of guiding wheel shaft and bottom wheel shaft does not coincide, successfully realizes the fine adjustment of guiding wheel outside distance, so as to be more favorable to the advance or retreat of fork truck.

Description

Technical Field

[0001] This utility model relates to the field of forklift accessories technology, specifically a guide wheel adjustment mechanism suitable for narrow aisle forklifts. Background Technology

[0002] When forklifts operate in narrow aisles, the most common navigation method is mechanical guide rail navigation. This method involves placing guide wheels on both sides of the vehicle body and arranging mechanical guide rails within the aisle for rack stacking, allowing the vehicle to move forward or backward within the aisle in a constrained manner.

[0003] Currently, the outer distance and height of most common guide wheels are fixed, or the adjustable methods are relatively simple, mostly linear adjustments, which are cumbersome to operate and lack structural stability. They are easily displaced by impacts, thus failing to ensure that the forklift can move forward or backward stably under constraint on the mechanical guide rail.

[0004] Therefore, a guide wheel adjustment mechanism suitable for narrow aisle forklifts is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a guide wheel adjustment mechanism suitable for narrow aisle forklifts, in order to solve the problems mentioned in the background art, such as the cumbersome operation, insufficient structural stability, and susceptibility to impact displacement caused by the fixed or simple linear adjustment of the outer distance of existing guide wheels.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a guide wheel adjustment mechanism suitable for narrow aisle forklifts, including a guide wheel bracket, wherein the guide wheel bracket is fixedly connected to the bottom of both sides of the forklift by an inner adjusting shim, an outer adjusting shim and connecting bolts;

[0007] The guide wheel bracket has a vertical shaft hole at its front end, and a through notch is formed along the axial direction of the shaft hole at its front end. The through notch penetrates the shaft hole, and a threaded hole is formed on the front side of the guide wheel bracket in a direction perpendicular to the through notch.

[0008] The guide wheel shaft is securely installed in the shaft hole by a locking bolt connected to the threaded hole.

[0009] The bottom end of the guide wheel shaft is fixedly connected to the bottom wheel shaft. The central axis of the guide wheel shaft does not coincide with the central axis of the bottom wheel shaft. A guide wheel is rotatably connected to the bottom wheel shaft.

[0010] Preferably, the bottom outer side of the bottom wheel shaft is provided with a ring groove, and the guide wheel is engaged in the ring groove by a shaft elastic retaining ring to limit its position on the bottom wheel shaft.

[0011] Preferably, the rear end of the guide wheel bracket is configured as a rectangular block, and a first through-hole is provided at each of the four corners of the rear end of the guide wheel bracket. The inner and outer adjusting shims are both configured as inverted U-shaped blocks, and a second through-hole matching the first through-hole is provided at each of the four corners of the inner and outer adjusting shims.

[0012] Preferably, the inner and outer adjusting shims have the same shape.

[0013] Preferably, there are several inner adjusting shims and several outer adjusting shims.

[0014] Preferably, the outer adjusting shim is positioned before the rear end of the guide wheel bracket, and the inner adjusting shim is positioned after the rear end of the guide wheel bracket.

[0015] Preferably, the connecting bolt passes sequentially through the second through hole on the outer adjusting shim, the first through hole on the rear end of the guide wheel bracket, and the second through hole on the inner adjusting shim, and is threaded to the forklift to fix the position of the guide wheel bracket on the forklift.

[0016] Preferably, the inner adjusting shim can be moved to the front of the rear end of the guide wheel bracket, and the outer adjusting shim can also be moved to the rear end of the guide wheel bracket. The outer distance of the guide wheel can be adjusted by adjusting the number of inner or outer adjusting shims after the rear end of the guide wheel bracket.

[0017] Preferably, the central axes of the guide wheel shaft and the bottom wheel shaft are both vertically arranged, and the central axes of the guide wheel shaft and the bottom wheel shaft are parallel to each other.

[0018] Preferably, the bottom wheel axle includes a top plate and a bottom axle, the bottom axle is vertically disposed at the center of the bottom surface of the top plate, and the guide wheel axle is vertically disposed at the edge of the top surface of the top plate.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. This device, through the arrangement and cooperation of the guide wheel bracket, through notch and guide wheel shaft, utilizes the guide wheel shaft to slide up and down in the shaft hole and be locked in the shaft hole by the locking bolt, successfully realizing convenient adjustment of the guide wheel height, making operation convenient.

[0021] 2. This device, through the arrangement and cooperation of internal and external adjusting shims and the bottom wheel axle, utilizes the interchangeability of the internal and external adjusting shims to successfully achieve coarse adjustment of the outer distance of the guide wheel, improving operational convenience. Simultaneously, by utilizing the non-coincidence of the central axes of the guide wheel axle and the lockable rotation of the guide wheel axle within the axle hole, fine adjustment of the outer distance of the guide wheel is successfully achieved, ultimately bringing the outer distance of the guide wheel closer to the desired value. This further facilitates the forward or backward movement of the forklift. The device's ingenious and efficient design makes it suitable for widespread application on narrow-aisle forklifts. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings. Obviously, the drawings described below are merely some embodiments of this utility model, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. Wherein:

[0023] Figure 1 This is a schematic diagram illustrating the application of this utility model;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 4 This is an exploded view of the entire utility model;

[0027] Figure 5 This is a schematic diagram of the existing technology.

[0028] In the diagram: 1. Guide wheel bracket; 11. Through notch; 12. Shaft hole; 13. Threaded hole; 2. Inner adjusting shim; 3. Outer adjusting shim; 4. Guide wheel shaft; 41. Bottom wheel shaft; 42. Ring groove; 5. Guide wheel; 6. Shaft elastic retaining ring; 7. Locking bolt; 8. Connecting bolt; 9. Forklift; 91. Shelf; 92. Original bracket; 93. Original guide wheel. Detailed Implementation

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

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] Reference Figures 1-5 As shown, this utility model provides a technical solution for a guide wheel adjustment mechanism suitable for narrow aisle forklifts:

[0033] Reference Figure 1-4 As shown, a guide wheel adjustment mechanism suitable for narrow aisle forklifts includes a guide wheel bracket 1, which is fixedly connected to the bottom of both sides of the forklift 9 by an inner adjusting shim 2, an outer adjusting shim 3 and a connecting bolt 8.

[0034] Reference Figure 4 As shown, the front end of the guide wheel bracket 1 has a vertical shaft hole 12, and the front end of the guide wheel bracket 1 has a through notch 11 along the axial direction of the shaft hole 12. The through notch 11 penetrates the shaft hole 12, and the front side of the guide wheel bracket 1 has a threaded hole 13 perpendicular to the through notch 11.

[0035] The guide wheel shaft 4 is installed in the shaft hole 12 by means of a locking bolt 7 and a threaded connection to the threaded hole 13.

[0036] Reference Figure 4 As shown, the bottom end of the guide wheel shaft 4 is fixedly connected to the bottom wheel shaft 41. The central axis of the guide wheel shaft 4 does not coincide with the central axis of the bottom wheel shaft 41. The guide wheel 5 is rotatably connected to the bottom wheel shaft 41.

[0037] Reference Figure 4 As shown, in an optional embodiment: a ring groove 42 is provided at the bottom of the outer side of the bottom wheel shaft 41, and the guide wheel 5 is engaged in the ring groove 42 by the shaft elastic retaining ring 6 to limit it on the bottom wheel shaft 41.

[0038] Reference Figure 4As shown, in an optional embodiment: the rear end of the guide wheel bracket 1 is set as a rectangular block, and a first through hole is provided at each of the four corners of the rear end of the guide wheel bracket 1. The inner adjusting shim 2 and the outer adjusting shim 3 are both set as inverted U-shaped blocks, and a second through hole matching the first through hole is provided at each of the four corners of the inner adjusting shim 2 and the outer adjusting shim 3.

[0039] Reference Figure 4 As shown, in an optional embodiment, the inner adjusting shim 2 and the outer adjusting shim 3 have the same shape.

[0040] Reference Figure 4 As shown, in one optional embodiment, there are several inner adjusting shims 2 and several outer adjusting shims 3. In this embodiment, there are two inner adjusting shims 2 and one outer adjusting shim 3.

[0041] Reference Figure 4 As shown, in an optional embodiment: the outer adjusting shim 3 is placed in front of the rear end of the guide wheel bracket 1, and the inner adjusting shim 2 is placed behind the rear end of the guide wheel bracket 1.

[0042] It should be noted that the connecting bolt 8 passes through the second through hole on the outer adjusting shim 3, the first through hole on the rear end of the guide wheel bracket 1, and the second through hole on the inner adjusting shim 2 in sequence, and is threaded to the forklift 9 to fix the position of the guide wheel bracket 1 on the forklift 9.

[0043] It should be noted that the inner adjusting shim 2 can be moved to the front of the rear end of the guide wheel bracket 1, and the outer adjusting shim 3 can also be moved to the rear end of the guide wheel bracket 1. The outer distance of the guide wheel 5 can be adjusted by adjusting the number of inner adjusting shims 2 or outer adjusting shims 3 after the rear end of the guide wheel bracket 1.

[0044] It should be noted that, in one optional embodiment, the central axes of both the guide wheel shaft 4 and the bottom wheel shaft 41 are vertically arranged, and the central axes of the guide wheel shaft 4 and the bottom wheel shaft 41 are parallel to each other.

[0045] It should be noted that, in one optional embodiment, the bottom wheel axle 41 includes a top plate and a bottom axle, with the bottom axle vertically disposed at the center of the bottom surface of the top plate, and the guide wheel axle 4 vertically disposed at the edge of the top surface of the top plate.

[0046] The working principle of this mechanism will now be explained through its operational process: When using this mechanism, a brief introduction will first be given to the working environment and existing technology of the forklift 9 equipped with this mechanism: (Refer to...) Figure 1 As shown, the forklift 9 travels in a narrow aisle formed by stacked shelves 91. This narrow aisle is equipped with mechanical tracks for moving forward or backward in conjunction with guide wheels 5. In the prior art, referring to... Figure 5As shown, it mainly consists of the original bracket 92 and the original guide wheel 93. Most of them are fixed. In actual use, the position of the original bracket 92 on the forklift 9 is gradually adjusted to adjust the height and outer distance of the original guide wheel 93, so as to move forward or backward in coordination with the mechanical track in the narrow aisle. The operation is cumbersome, and the outer distance of the original guide wheel 93 is difficult to adjust precisely.

[0047] The specific process by which this mechanism adjusts the height and outer distance of guide wheel 5 is as follows:

[0048] The outer distance of the guide wheel 5 refers to the distance between the guide wheel 5 and the outer side of the forklift 9. In actual operation, the closer the outer distance of the guide wheel 5 is to the expected distance, the better the guide wheel 5 will fit the mechanical track on the rack 91, thus having a higher degree of matching, which is beneficial for the forklift 9 to move forward or backward.

[0049] When adjusting the height of the guide wheel 5, in addition to controlling the height adjustment of the guide wheel bracket 1 on the forklift 9 (that is, fixing the guide wheel bracket 1 to the bottom of the outer side of the forklift 9 by connecting bolt 8), after the guide wheel bracket 1 is fixed, it is also necessary to fine-tune the height of the guide wheel 5. Specifically, rotate the locking bolt 7 to expand the through notch 11, thereby adjusting the height of the guide wheel shaft 4 in the shaft hole 12. Then, reverse the locking bolt 7 to squeeze the through notch 11, so that the shaft hole 12 can hold the guide wheel shaft 4 to fix the position of the guide wheel shaft 4, thereby achieving fine-tuning of the height of the guide wheel 5. This greatly improves the matching degree between the guide wheel 5 and the mechanical rail on the rack 91, which is beneficial to the forward or backward movement of the forklift 9.

[0050] There are two modes for adjusting the outer distance of the guide wheel 5: coarse adjustment and fine adjustment. In coarse adjustment, the number of inner adjusting shims 2 or outer adjusting shims 3 after the rear end of the guide wheel bracket 1 is changed. That is, when a larger outer distance of the guide wheel 5 is needed, the outer adjusting shims 3 or inner adjusting shims 2 are moved to a position after the rear end of the guide wheel bracket 1. When a smaller outer distance of the guide wheel 5 is needed, the outer adjusting shims 3 or inner adjusting shims 2 are moved to a position before the rear end of the guide wheel bracket 1. It should be noted that when changing the number of inner adjusting shims 2 or outer adjusting shims 3 after the rear end of the guide wheel bracket 1, the total number of inner adjusting shims 2 and outer adjusting shims 3 remains unchanged. This avoids the need to separately remove the corresponding inner adjusting shims 2 or outer adjusting shims 3 to fill the gap, thus improving the convenience of operation. During fine-tuning, if the guide wheel 5 and the mechanical track on the shelf 91 still cannot be matched with a high degree of fit after adjusting the number of inner adjusting shims 2 or outer adjusting shims 3 behind the rear end of the guide wheel bracket 1, then simply loosen the locking bolt 7 so that the guide wheel shaft 4 can rotate within the shaft hole 12. Since the central axes of the guide wheel shaft 4 and the bottom wheel shaft 41 are not on the same vertical line, the rotation of the bottom wheel shaft 41 makes the outer distance of the guide wheel 5 gradually approach the expected value, that is, the guide wheel 5 fits better against the mechanical track on the shelf 91, which is more conducive to the forward or backward movement of the forklift 9.

[0051] This device, through the arrangement and cooperation of the guide wheel bracket 1, the through notch 11 and the guide wheel shaft 4, utilizes the guide wheel shaft 4 to slide up and down in the shaft hole 12 and be locked in the shaft hole 12 by the locking bolt 7, to successfully achieve convenient adjustment of the height of the guide wheel 5, making operation convenient.

[0052] This device, through the arrangement and cooperation of the inner adjusting shim 2, the outer adjusting shim 3, and the bottom wheel shaft 41, utilizes the interchangeability of the inner adjusting shim 2 and the outer adjusting shim 3 to successfully achieve coarse adjustment of the outer distance of the guide wheel 5, improving the ease of operation. At the same time, by utilizing the non-coincidence of the central axes of the guide wheel shaft 4 and the bottom wheel shaft 41, and with the guide wheel shaft 4 being able to rotate tightly within the shaft hole 12, fine adjustment of the outer distance of the guide wheel 5 is successfully achieved, ultimately making the outer distance of the guide wheel 5 gradually approach the expected value, thus making it more conducive to the forward or backward movement of the forklift 9. The structure is ingenious and efficient, and is suitable for widespread application on narrow aisle forklifts.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A guide wheel adjustment mechanism for a narrow-aisle fork truck, characterized by: Including the guide wheel support (1), the guide wheel support (1) is fixedly connected on both sides of the bottom of the forklift (9) through the inner adjusting gasket (2), the outer adjusting gasket (3) and the connecting bolt (8); The front end of the guide wheel support (1) is vertically provided with an axle hole (12), the front end of the guide wheel support (1) is provided with a through gap (11) along the axial direction of the axle hole (12), the through gap (11) penetrates the axle hole (12), and the front side of the guide wheel support (1) is provided with a threaded hole (13) perpendicular to the direction of the through gap (11); The guide wheel shaft (4) is tightly arranged by being screwed and connected with the threaded hole (13) in the axle hole (12) through the locking bolt (7). The bottom end of the guide wheel shaft (4) is fixedly connected with the bottom wheel shaft (41), the central axis of the guide wheel shaft (4) is not coincident with the central axis of the bottom wheel shaft (41), and the bottom wheel shaft (41) is rotatably connected with the guide wheel (5).

2. A guide wheel adjustment mechanism for a narrow-aisle fork truck according to claim 1, wherein: The outer side of the bottom wheel shaft (41) is provided with a ring clamping groove (42) at the bottom, and the guide wheel (5) is clamped into the ring clamping groove (42) through the shaft elastic retainer (6) to limit the position on the bottom wheel shaft (41).

3. A guide wheel adjustment mechanism for a narrow-aisle fork truck according to claim 2, wherein: The rear end of the guide wheel support (1) is provided as a rectangular block, the four corners of the rear end of the guide wheel support (1) are provided with first through holes, the inner adjusting gasket (2) and the outer adjusting gasket (3) are provided as inverted U-shaped blocks, and the four corners of the inner adjusting gasket (2) and the outer adjusting gasket (3) are provided with second through holes matched with the first through holes.

4. A guide wheel adjustment mechanism for a narrow-aisle fork truck according to claim 3, wherein: The inner adjusting gasket (2) and the outer adjusting gasket (3) are the same in shape.

5. A guide wheel adjustment mechanism for a narrow-aisle fork truck according to claim 4, wherein: The inner adjusting gasket (2) is provided with a plurality of, and the outer adjusting gasket (3) is provided with a plurality of.

6. A guide wheel adjustment mechanism for a narrow-aisle fork truck according to claim 5, wherein: The outer adjusting gasket (3) is placed before the rear end of the guide wheel support (1), and the inner adjusting gasket (2) is placed after the rear end of the guide wheel support (1).

7. A guide wheel adjustment mechanism for a narrow-aisle fork truck according to claim 6, wherein: The connecting bolt (8) passes through the second through hole on the outer adjusting gasket (3), the first through hole on the rear end of the guide wheel support (1) and the second through hole on the inner adjusting gasket (2) in sequence and is screwed with the forklift (9) to fix the position of the guide wheel support (1) on the forklift (9).

8. A guide wheel adjustment mechanism for a narrow-aisle fork truck according to claim 7, wherein: The inner adjusting gasket (2) can be moved to before the rear end of the guide wheel support (1), and the outer adjusting gasket (3) can also be moved to after the rear end of the guide wheel support (1), the number of the inner adjusting gasket (2) or the outer adjusting gasket (3) after the rear end of the guide wheel support (1) is adjusted to adjust the outer side distance of the guide wheel (5).

9. A guide wheel adjustment mechanism for a narrow-aisle fork truck according to claim 8, wherein: The central axes of the guide wheel shaft (4) and the bottom wheel shaft (41) are vertically arranged, and the central axes of the guide wheel shaft (4) and the bottom wheel shaft (41) are arranged in parallel to each other.

10. A guide wheel adjustment mechanism for a narrow-aisle fork truck according to claim 9, wherein: The bottom wheel shaft (41) comprises a top disc and a bottom shaft, the bottom shaft is vertically arranged at the center of the bottom surface of the top disc, and the guide wheel shaft (4) is vertically arranged at the edge of the top surface of the top disc.

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