Axial positioning adjusting device

Abstract

The utility model relates to the field of axles, in particular to an axial positioning adjusting device which comprises a lower cylinder, an upper cylinder is installed on the outer wall of the top of the lower cylinder, a base is installed on the outer wall of the bottom of the lower cylinder, an adjusting structure is arranged at the center of the inner wall of the upper cylinder and the center of the inner wall of the lower cylinder, and a gear positioning seat is installed on the outer wall of the top end of the upper cylinder. The adjusting structure comprises a guide seat installed on the outer wall of the top of the base and located in the center of the upper cylinder, a lead screw connected to the inner wall of the guide seat in an up-down sliding mode, a lead screw sliding sleeve screwed to the outer wall of the lead screw and a worm wheel installed on the outer wall of the lead screw sliding sleeve. The tool is high in precision and stability, lead screw positioning and worm and gear transmission are adopted, the transmission precision is high, fine adjustment and fixation of the height of a positioning platform can be achieved, and accurate matching of a large gear and an axle is guaranteed. The structure is simple, operation is convenient, split modular design is adopted, all parts are clear in structure, and installation, operation and maintenance are easy.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of axle, especially relates to an axial positioning adjusting device. BACKGROUND

[0002] It is a common design to install annular parts on the axle in many mechanical devices. The same design also exists in the gear transmission device of a railway vehicle. A driven gear is assembled on the axle of the railway vehicle by interference, and the train is driven to move forward through the meshing transmission of the main and driven gears.

[0003] Because there are many vehicle manufacturers and many vehicle models, the installation positions of the driven gears on the axles are often different. In production, a set of positioning tooling for assembling the axle and the driven gear is usually made for one vehicle model, which causes inconvenience in production preparation, consumes time for operation, and also causes a large number of toolings in the tooling library and high cost.

[0004] In order to improve the universality of the assembly tooling and meet the needs of the installation and positioning dimensions of different models of axles and driven gears, a new type of axial positioning device needs to be designed to solve these problems. The present application provides a new structure of a hot assembly positioning device for the driven gear of the axle of a railway vehicle. SUMMARY

[0005] The utility model aims at the above-mentioned problems and deficiencies, and provides an axial positioning adjusting device: the screw rod belongs to a screw pair, has high movement precision and can bear large load, the transmission ratio of the worm gear and the worm mechanism is large, and the worm gear has self-locking property, so that the fine adjustment and fixation of the height of the positioning platform can be realized, and the problem that the tooling is used for only one axle is solved.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] An axial positioning adjusting device comprises a lower cylinder, an upper cylinder is installed on the top outer wall of the lower cylinder, a base is installed on the bottom outer wall of the lower cylinder, an adjusting structure is arranged at the center of the inner walls of the upper cylinder and the lower cylinder, and a gear positioning seat is installed on the top end outer wall of the upper cylinder.

[0008] Preferably, a driving hole is formed in one side outer wall of the lower cylinder at one end of the worm gear, a worm is arranged in the driving hole, a bearing seat is installed on one end outer wall of the worm, and a hand wheel is installed on the other end of the worm.

[0009] Preferably, the other end of the worm is sleeved with a small bearing, and the outer wall of the small bearing is in contact with the inner wall of the lower cylinder; the bearing seat is installed on the inner wall of the lower cylinder, and the worm and the worm gear are located in the box.

[0010] Preferably, the inner wall of the lower cylinder is provided with a guide ring at the top, and the outer wall of the guide ring is slidably connected with the guide seat.

[0011] Preferably, the top end of the screw rod is provided with an axle positioning platform, and the outer wall of one side of the axle positioning platform is welded with a limiting protrusion.

[0012] Preferably, the outer wall of one side of the upper cylinder and the lower cylinder is provided with a sliding groove, and the outer wall of the sliding groove and the inner wall of the upper cylinder and the lower cylinder are slidably connected with the axle positioning platform and the limiting protrusion, respectively.

[0013] Preferably, the outer wall of the upper cylinder at the sliding groove is provided with a strip-shaped observation window, and the outer wall of the upper cylinder at one side of the observation window is provided with an adjusting line.

[0014] The utility model discloses the beneficial effects are:

[0015] 1. The screw rod belongs to a screw pair, has high motion precision, can bear large load, the transmission ratio of the worm gear and the worm mechanism is large, and has self-locking property, so that the height of the positioning platform can be finely adjusted and fixed.

[0016] 2. Simple structure, convenient operation: adopting split modular design, the structure of each part is clear, easy to install, operate and maintain.

[0017] 3. High precision, high stability: the tool adopts screw positioning and worm gear transmission, has high transmission precision, can finely adjust and fix the height of the positioning platform, and ensures the accurate cooperation of the gear wheel and the axle;

[0018] 4. Safe and reliable: the worm gear structure is compact, has large transmission ratio, high strength and rigidity, and strong bearing capacity; simultaneously has self-locking property, and can realize accurate positioning.

[0019] 5. Wide application range: suitable for the hot mounting operation of various types of rail vehicle axles and driven gears.

[0020] 6. Improve work efficiency: the tool has the characteristics of rapid positioning and rapid adjustment, and can significantly improve the efficiency of the hot mounting operation.

[0021] 7. The position of the axle positioning platform is determined through the observation window and the adjusting line, and the position is observed while adjusting. DRAWINGS

[0022] Figure 1Part of the axial positioning adjusting device section structure schematic diagram is provided in the utility model.

[0023] Figure 2 Upper cylinder section structure schematic diagram of the axial positioning adjusting device is provided in the utility model.

[0024] Figure 3 Worm structure schematic diagram of the axial positioning adjusting device is provided in the utility model.

[0025] Figure 4 The whole structure schematic diagram of the axial positioning adjusting device is provided in the utility model.

[0026] In the drawing: 1 lower cylinder, 2 upper cylinder, 3 base, 4 gear positioning seat, 5 guide seat, 6 lead screw, 7 guide ring, 8 lead screw sliding sleeve, 9 worm wheel, 10 worm, 11 bearing seat, 12 hand wheel, 13 box, 14 axle positioning platform, 15 limiting protrusion, 16 sliding groove, 17 observation window, 18 adjustment line. Specific implementation

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0028] Embodiment:

[0029] Reference Figures 1-4 An axial positioning adjusting device, including lower cylinder 1, the top outer wall of lower cylinder 1 is installed with upper cylinder 2, and the bottom outer wall of lower cylinder 1 is installed with base 3, the inner wall center of upper cylinder 2 and lower cylinder 1 is equipped with adjusting structure, and the top end outer wall of upper cylinder 2 is installed with gear positioning seat 4.

[0030] Adjusting structure includes guide seat 5 installed at the top outer wall of base 3 at the center of upper cylinder 2, lead screw 6 that is connected in the inner wall of guide seat 5 up and down slidingly, lead screw sliding sleeve 8 that is screwed on the outer wall of lead screw 6 and worm wheel 9 installed on the outer wall of lead screw sliding sleeve 8.

[0031] The outer wall of one side of lower cylinder 1 is provided with driving hole at one end of worm wheel 9, and worm 10 is arranged in the driving hole, the outer wall of one end of worm 10 is installed with bearing seat 11, the other end of worm 10 is installed with hand wheel 12, upper cylinder 2 and lower cylinder 1 are connected through flange, axle positioning platform 14 is horizontally up and down sliding in upper cylinder 2 and lower cylinder 1 under the action of limiting protrusion 15, which is convenient for adjusting and installing gear.

[0032] The outer wall of the other end of the worm 10 is sleeved with a small bearing, and the outer side of the outer wall of the small bearing is in contact with the inner wall of the lower cylinder 1. The bearing seat 11 is installed on the inner wall of the lower cylinder 1, and the worm 10 is engaged with the worm wheel 9. The inner wall of the lower cylinder 1 is provided with a box body 13 at the position of the worm 10, and the worm 10 and one end of the worm wheel 9 are located inside the box body 13. The box body 13 is filled with oil to lubricate the meshing position of the worm 10 and the worm wheel 9, thereby reducing the wear of the worm 10 and the worm wheel 9.

[0033] The inner wall of the lower cylinder 1 is provided with a guide ring 7 at the top, and the outer wall of the lead screw 6 is respectively connected with the outer wall of the guide seat 5 and the guide ring 7 in a sliding manner. The lead screw 6 is connected with the guide seat 5 and the guide ring 7 in a sliding manner, which ensures the stability of the up-and-down movement of the lead screw 6.

[0034] The top end of the lead screw 6 is provided with an axle positioning platform 14, and the outer wall of one side of the axle positioning platform 14 is welded with a limiting protrusion 15. When the axle is located on the axle positioning platform 14, the lead screw 6 is not stressed automatically under the action of the worm wheel 9 and the worm 10, which is convenient for adjusting and supporting the axle.

[0035] The upper cylinder 2 and the lower cylinder 1 are both provided with a sliding groove 16 on one side of the outer wall, and the axle positioning platform 14 and the limiting protrusion 15 are respectively connected with the inner wall of the upper cylinder 2 and the lower cylinder 1 and the outer wall of the sliding groove 16 in a sliding manner.

[0036] The outer wall of the upper cylinder 2 is provided with a strip-shaped observation window 17 at the position of the sliding groove 16, and the outer wall of the upper cylinder 2 is provided with an adjusting line 18 at one side of the observation window 17. When the worm 10 drives the worm wheel 9 and the lead screw sleeve 8 to rotate by rotating the hand wheel 12, the position of the axle positioning platform 14 at the top end of the lead screw 6 can be observed through the observation window 17, which is convenient for adjusting and observing the adjusting position.

[0037] Working principle: when in use, the whole is fixed in the working area through the base 3. The hand wheel 12 is rotated according to the current axle gear installation position to be machined, the hand wheel 12 drives the worm 10 to rotate, the worm 10 is engaged with the worm wheel 9 inside the box body 13 to drive the worm wheel 9 to rotate, the worm wheel 9 drives the lead screw sleeve 8 to rotate on the lead screw 6, and the lead screw 6 cannot rotate under the action of the limiting protrusion 15 on the axle positioning platform 14, so the lead screw 6 slides up and down in the guide ring 7 and the guide seat 5 after the lead screw sleeve 8 rotates, the position of the axle positioning platform 14 on the upper cylinder 2 is adjusted, and the position of the axle positioning platform 14 is judged through the observation window 17 and the adjusting line 18. After the adjustment is completed, the gear to be installed is placed on the gear positioning seat 4, one end of the axle is placed on the axle positioning platform 14, and the gear can be installed on the axle at the specified position, and the installation is completed.

[0038] The exemplary embodiments of the present application are described in detail herein with reference to the accompanying drawings. As those skilled in the art will understand, various modifications and changes can be made to the above-described embodiments without departing from the underlying inventive concepts disclosed herein and each of the individual features of the application can be used in various combinations with each other and in the absence of the other features without departing from the scope of the present application, which is to be defined only by the appended claims. The foregoing description of specific exemplary embodiments of the present application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise forms disclosed. Obviously many modifications and variations are possible in light of the above teaching. It is intended that the scope of the application be limited not with reference to the specific exemplary embodiments described above, but rather to be encompassed within the bounds of the appended claims and their equivalents.

Claims

1. An axial positioning and adjusting device, comprising a lower cylinder (1), characterized in that: The top outer wall of the lower cylinder (1) is mounted with an upper cylinder (2), and the bottom outer wall of the lower cylinder (1) is mounted with a base (3); an adjustment structure is provided at the center of the inner walls of the upper cylinder (2) and the lower cylinder (1), and a gear positioning seat (4) is mounted on the top outer wall of the upper cylinder (2); The adjustment structure comprises a guide seat (5) mounted on the outer wall of the top of the base (3) and located at the center of the upper cylinder (2), a screw rod (6) connected to the inner wall of the guide seat (5) in an up-and-down sliding manner, a screw rod sleeve (8) screwed on the outer wall of the screw rod (6), and a worm gear (9) mounted on the outer wall of the screw rod sleeve (8).

2. The axial positioning and adjusting device according to claim 1, characterized in that: A driving hole is provided on the outer wall of one side of the lower cylinder (1) at one end of the worm wheel (9), and a worm (10) is provided in the driving hole. A bearing seat (11) is installed on the outer wall of one end of the worm (10), and a hand wheel (12) is installed on the other end of the worm (10).

3. The axial positioning adjustment device according to claim 2, characterized in that: A small bearing is sleeved on the outer wall of the other end of the worm (10), and the outer wall of the small bearing contacts the inner wall of the lower cylinder (1). The bearing seat (11) is installed on the inner wall of the lower cylinder (1), and the worm (10) is engaged with the worm wheel (9). A box (13) is installed on the inner wall of the lower cylinder (1) at the worm (10), and one end of the worm (10) and the worm wheel (9) are both located inside the box (13).

4. The axial positioning adjustment device according to claim 1, characterized in that: A guide ring (7) is installed at the top of the inner wall of the lower cylinder (1), and the outer wall of the screw rod (6) is slidably connected to the guide seat (5) and the outer wall of the guide ring (7).

5. The axial positioning and adjusting device according to claim 1, characterized in that: An axle positioning platform (14) is installed on the outer wall of the top end of the screw rod (6), and a limiting protrusion (15) is welded to the outer wall of one side of the axle positioning platform (14).

6. The axial positioning and adjusting device according to claim 1, characterized in that: The outer walls of one side of the upper cylinder (2) and the lower cylinder (1) are both provided with a sliding groove (16), and the axle positioning platform (14) and the limiting protrusion (15) are respectively slidably connected to the inner walls of the upper cylinder (2) and the lower cylinder (1) and the outer wall of the sliding groove (16).

7. The axial positioning and adjusting device according to claim 1, characterized in that: The upper cylinder (2) is provided with a strip-shaped observation window (17) on its outer wall at the sliding groove (16), and an adjustment line (18) is provided on the outer wall of the upper cylinder (2) at one side of the observation window (17).

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