Shaft distance adjusting mechanism

Abstract

A wheelbase adjusting mechanism comprises an axle, a spring beam and a support, one end of the spring beam is connected with the axle, the other end of the spring beam is installed on the support, the wheelbase adjusting mechanism further comprises a shaft sleeve, an adjusting cushion block and a hinge shaft, the other end of the spring beam is hinged to the shaft sleeve through the hinge shaft, an adjusting portion is arranged on the adjusting cushion block, and the hinge shaft penetrates through the adjusting portion. A first adjusting hole is formed in the shaft sleeve, the hinge shaft adjustably penetrates through the first adjusting hole, the adjusting cushion block is installed on the shaft sleeve in a replaceable mode, and the left-right position of the hinge shaft on the first adjusting hole is adjusted through the adjusting part. The adjusting cushion block and the shaft sleeve are arranged, the adjusting part is arranged on the adjusting cushion block, the first adjusting hole is formed in the shaft sleeve, the adjusting cushion block is installed on the shaft sleeve in a replaceable mode, the left-right position of the hinged shaft on the first adjusting hole is adjusted through the adjusting part, and then the axle distance of the axle is adjusted; the adjusting mode of replacing the adjusting cushion block does not involve complex movement of parts, the adjusting process is simplified, and adjustment is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of axles, in particular to a wheelbase adjusting mechanism. Background Art

[0002] When installing axles on multi-axle vehicles, in order to prevent the axles from swaying, it is often necessary to make fine adjustments to the axle wheelbase when installing and debugging the axle suspension system to meet the vehicle's usage requirements.

[0003] A currently known wheelbase adjustment mechanism, such as Figure 12 As shown, the specific adjustment principle can be found in the background technology of patent CN207825874U. The disadvantage of this adjustment mechanism is that when the vehicle is running under heavy load, wear is very likely to occur between the horizontal long hole, the oblique long hole and the hinge shaft.

[0004] In addition, in order to solve the above problems, patent CN207825874U discloses an axle parallelism adjustment device that is not easy to wear, including a spring beam, one end of the spring beam is hingedly connected to a bracket through a hinge shaft, the hinge hole provided on the bracket is a long strip through hole, a sleeve is provided between the hinge hole and the hinge shaft, the sleeve and the hinge hole form a surface contact, the hinge shaft passes through the cylindrical through hole of the sleeve, a positioning plate is provided on the bracket, and a long strip through hole is provided on the positioning plate, which is sleeved on the sleeve and forms a surface contact with the sleeve. When viewed from the end face of the hinge shaft, the length direction of the long strip through hole intersects with the length direction of the hinge hole to form an angle, and the sliding direction of the positioning plate is neither parallel to the length direction of the long strip through hole nor to the length direction of the hinge hole; that is, Figure 13 The wheelbase adjustment mechanism shown in the figure has a complicated adjustment process. The sleeve involves movement in two directions and also involves movement of the positioning plate. The movement of the components is complicated, which makes the adjustment inconvenient.

[0005] Therefore, further improvements are necessary. Utility Model Content

[0006] The purpose of the utility model is to provide a wheelbase adjustment mechanism with simple structure, convenient adjustment, good durability, easy installation and strong practicality, so as to overcome the shortcomings of the prior art.

[0007] A wheelbase adjustment mechanism designed for this purpose includes an axle, a spring beam and a bracket, one end of the spring beam is connected to the axle, and the other end of the spring beam is installed on the bracket. It is characterized in that it also includes a sleeve, an adjustment pad and a hinge shaft, the other end of the spring beam is hinged to the sleeve through the hinge shaft, the adjustment pad is provided with an adjustment part, the hinge shaft passes through the adjustment part, and the sleeve is provided with a first adjustment hole, the hinge shaft can pass through the first adjustment hole in an adjustable manner, and the adjustment pad is replaceably installed on the sleeve to adjust the left and right positions of the hinge shaft on the first adjustment hole through the adjustment part.

[0008] The adjusting portion is an adjusting slot, which is located at any left or right position on the adjusting pad.

[0009] The adjusting portion is a second adjusting hole, and the second adjusting hole is located at any left or right position on the adjusting pad.

[0010] The end of the articulated shaft is connected with a fastener, and the adjusting pad is pressed between the fastener and the shaft sleeve.

[0011] The shaft sleeve is fixedly welded to the bracket.

[0012] The shaft sleeve is provided with an installation groove, and the adjusting pad is positioned and installed on the installation groove.

[0013] The first adjustment hole is an elongated hole.

[0014] The material hardness of the adjusting pad is less than that of the bushing and the articulated shaft.

[0015] An arc portion matching the shape of the hinge shaft is provided on the adjusting groove, and the hinge shaft passes through the arc portion.

[0016] The shape of the second adjustment hole matches the shape of the hinge shaft.

[0017] The wheelbase adjustment mechanism of the present invention is provided with an adjusting pad and a shaft sleeve, an adjusting portion is provided on the adjusting pad, and a first adjusting hole is provided on the shaft sleeve. The adjusting pad is replaceably installed on the shaft sleeve to adjust the left and right positions of the articulated shaft on the first adjusting hole through the adjusting portion, thereby adjusting the wheelbase of the axle. This adjustment method by replacing the adjusting pad does not involve complicated movements of parts, simplifies the adjustment process, and makes adjustment more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the wheelbase adjustment mechanism in the first embodiment of the present utility model.

[0019] Figure 2 It is a partial structural cross-sectional view of the wheelbase adjustment mechanism in the first and second embodiments of the present invention.

[0020] Figure 3 This is a front view of the adjusting pad when the adjusting slot is located on the right side in the first embodiment of the utility model.

[0021] Figure 4 This is a front view of the adjusting pad when the adjusting slot is located on the left in the first embodiment of the utility model.

[0022] Figure 5 This is a cross-sectional view of the adjusting pad in the first embodiment of the present utility model.

[0023] Figure 6This is a front view of the adjusting pad when the second adjusting hole is located in the middle in the second embodiment of the present utility model.

[0024] Figure 7 This is a front view of the adjusting pad when the second adjusting hole is located on the left in the second embodiment of the present utility model.

[0025] Figure 8 This is a front view of the adjusting pad when the second adjusting hole is located on the right in the second embodiment of the present utility model.

[0026] Figure 9 This is a cross-sectional view of the adjusting pad in the second embodiment of the present utility model.

[0027] Figure 10 This is a front view of the shaft sleeve in the first and second embodiments of the present utility model.

[0028] Figure 11 It is a cross-sectional view of the shaft sleeve in the first and second embodiments of the present utility model.

[0029] Figure 12 It is a cross-sectional view of a traditional wheelbase adjustment mechanism.

[0030] Figure 13 It is a cross-sectional view of another traditional wheelbase adjustment mechanism. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] First embodiment:

[0033] See also Figure 1-Figure 5 、 Figure 10-11 The wheelbase adjustment mechanism includes an axle 1, a spring beam 2 and a bracket 3. The bracket 3 is fixed to the vehicle frame. One end of the spring beam 2 is connected to the axle 1, and the other end of the spring beam 2 is installed on the bracket 3. It also includes a sleeve 4, an adjusting pad 5 and an articulated shaft 6. The other end of the spring beam 2 is hinged to the sleeve 4 through the articulated shaft 6. The adjusting pad 5 is provided with an adjusting portion, and the articulated shaft 6 passes through the adjusting portion. A first adjusting hole 7 is provided on the sleeve 4, and the articulated shaft 6 can be adjusted to pass through the first adjusting hole 7. The adjusting pad 5 can be replaceably installed on the sleeve 4 to adjust the left and right position of the articulated shaft 6 on the first adjusting hole 7 through the adjusting portion, thereby adjusting the wheelbase of the axle 1.

[0034] The adjusting portion is an adjusting slot 8, which is located at any left or right position on the adjusting pad 5. The adjusting slot 8 is tightly fitted with the hinge shaft 6. By changing the left or right position of the adjusting slot 8 on the adjusting pad 5 (i.e., replacing a different adjusting pad 5), the left or right position of the hinge shaft 6 on the first adjusting hole 7 can be adjusted. Figure 1 、 Figure 3 、 Figure 4As shown, the adjustment slots 8 are respectively located in the middle, right and left of the adjustment pad 5 .

[0035] The end of the articulated shaft 6 is connected with a fastener 10, and the adjusting pad 5 is pressed between the fastener 10 and the shaft sleeve 4, thereby fixing the adjusting pad 5; the shaft sleeve 4 and the adjusting pad 5 are both arranged on both sides of the spring beam 2, and the fasteners 10 are respectively arranged at both ends of the articulated shaft 6. The articulated shaft 6 is a bolt shaft, the fastener 10 at the left end of the articulated shaft 6 is a nut, and the fastener 10 at the right end of the articulated shaft 6 is a bolt head.

[0036] The shaft sleeve 4 is fixedly welded to the bracket 3 .

[0037] The shaft sleeve 4 is provided with a mounting groove 11 , and the adjusting pad 5 is positioned and mounted on the mounting groove 11 to prevent the adjusting pad 5 from loosening.

[0038] The first adjustment hole 7 is an elongated hole, so that the hinge shaft 6 can pass through the first adjustment hole 7 in an adjustable manner.

[0039] The material hardness of the adjusting pad 5 is less than that of the shaft sleeve 4 and the articulated shaft 6, so that the wear of the shaft sleeve 4 and the articulated shaft 6 can be avoided. The adjusting pad 5 can be replaced during maintenance, which reduces the difficulty of maintenance.

[0040] The adjusting groove 8 is provided with an arc-shaped portion 12 that matches the shape of the hinge shaft 6 , and the hinge shaft 6 passes through the arc-shaped portion 12 .

[0041] Second embodiment:

[0042] See also Figure 2 、 Figures 6-11 The present wheelbase adjustment mechanism is different from the first embodiment in that:

[0043] The adjustment portion is a second adjustment hole 9, which is located at any left or right position on the adjustment pad 5. The second adjustment hole 9 is tightly matched with the hinge shaft 6. By changing the left and right positions of the second adjustment hole 9 on the adjustment pad 5 (i.e., replacing different adjustment pads 5), the left and right positions of the hinge shaft 6 on the first adjustment hole 7 can be adjusted; Figure 6-Figure 8 As shown, the second adjustment holes 9 are respectively located in the middle, right and left of the adjustment pad 5 .

[0044] The shape of the second adjustment hole 9 matches the shape of the hinge shaft 6 .

[0045] Other parts not described are the same as those in the first embodiment and will not be analyzed or described again here.

[0046] The above is a preferred embodiment of the present invention, which illustrates and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A wheelbase adjustment mechanism, comprising an axle (1), a spring beam (2) and a bracket (3), wherein one end of the spring beam (2) is connected to the axle (1) and the other end of the spring beam (2) is mounted on the bracket (3), characterized in that: The spring beam (2) further comprises a shaft sleeve (4), an adjusting pad (5) and a hinge shaft (6), wherein the other end of the spring beam (2) is hinged to the shaft sleeve (4) via the hinge shaft (6), an adjusting portion is provided on the adjusting pad (5), the hinge shaft (6) passes through the adjusting portion, a first adjusting hole (7) is provided on the shaft sleeve (4), the hinge shaft (6) can be adjusted to pass through the first adjusting hole (7), and the adjusting pad (5) can be replaceably mounted on the shaft sleeve (4) to adjust the left and right positions of the hinge shaft (6) on the first adjusting hole (7) via the adjusting portion.

2. The wheelbase adjustment mechanism according to claim 1, characterized in that: The adjusting portion is an adjusting groove (8), and the adjusting groove (8) is located at any left or right position on the adjusting pad (5).

3. The wheelbase adjustment mechanism according to claim 1, characterized in that: The adjustment portion is a second adjustment hole (9), and the second adjustment hole (9) is located at any left or right position on the adjustment pad (5).

4. The wheelbase adjustment mechanism according to claim 1, characterized in that: The end of the hinge shaft (6) is connected to a fastener (10), and the adjustment pad (5) is pressed between the fastener (10) and the shaft sleeve (4).

5. The wheelbase adjustment mechanism according to claim 4, characterized in that: The shaft sleeve (4) is fixedly welded to the bracket (3).

6. The wheelbase adjustment mechanism according to claim 5, characterized in that: A mounting groove (11) is provided on the shaft sleeve (4), and the adjusting pad (5) is positioned and mounted on the mounting groove (11).

7. The wheelbase adjustment mechanism according to claim 1, characterized in that: The first adjustment hole (7) is a long strip-shaped hole.

8. The wheelbase adjustment mechanism according to claim 1, characterized in that: The material hardness of the adjusting pad (5) is less than the material hardness of the shaft sleeve (4) and the articulated shaft (6).

9. The wheelbase adjustment mechanism according to claim 2, characterized in that: An arc-shaped portion (12) matching the shape of the hinge shaft (6) is provided on the adjustment groove (8), and the hinge shaft (6) passes through the arc-shaped portion (12).

10. The wheelbase adjustment mechanism according to claim 3, characterized in that: The shape of the second adjustment hole (9) matches the shape of the hinge shaft (6).

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