Guide wheel running-in mechanism

Abstract

The utility model discloses a guide wheel running-in mechanism, and belongs to the technical field of guide wheel running-in, the guide wheel running-in mechanism comprises an erecting unit, the left side and the right side of the erecting unit are respectively provided with a pressure unit and a driving unit, the erecting unit comprises a first support frame, the top of the first support frame is symmetrically provided with erecting seats, and the erecting seats are provided with erecting grooves; the pressure unit comprises a second supporting frame, and a hydraulic cylinder is arranged on the second supporting frame; the driving unit comprises ground rails arranged in parallel, a displacement trolley is slidably arranged on the ground rails, a rotating frame is arranged on the displacement trolley, a driving wheel set used for driving the guide wheels to rotate is arranged on the rotating frame, a driving motor is arranged on the driving wheel set, a mounting beam is detachably arranged at the ends, away from the first supporting frame, of the ground rails, and a driving cylinder is mounted on the mounting beam. The distance between the driving unit and the erecting unit can be flexibly changed through the driving cylinder, the erecting of the guide wheel is facilitated, the labor intensity is reduced, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of guiding wheel running-in, in particular to a guiding wheel running-in mechanism. Background Technique

[0002] The guiding wheel plays a very important role in the structure of an excavator. The guiding wheel of an excavator is a device used to guide the correct rotation of the crawler during the working process of the excavator to prevent it from deviating and derailing.

[0003] After the guiding wheel is assembled, it needs to be placed on a special running-in device for testing. The purpose of the test is to simulate the working state of the guiding wheel, apply a certain pressure to it for rotational running-in, and detect whether the floating seal chamber leaks oil during running-in.

[0004] Since the overall weight of the guiding wheel plus the assembled bracket is very large, a lifting device is required to complete the erection on the running-in test equipment. However, the structure of the existing guiding wheel running-in test equipment is too compact, making the erection inconvenient.

[0005] For example, the utility model patent with the publication number CN 207730447 U and the publication date of August 14, 2018, discloses a guiding wheel running-in test device, including a housing. A first motor is fixedly arranged inside the top of the housing exterior. The output end of the first motor is in transmission connection with one end of a lead screw. The other end of the lead screw is movably connected to the middle of a pressing block. One side of the pressing block is slidably connected to a chute opened on one inner side wall of the housing through a slider. The middle of a turntable is rotatably connected to the inside of one side of the housing through a rotating shaft.

[0006] This utility model adjusts the height of the pressing block by driving the lead screw to rotate through the first motor according to the size of the guiding wheel. By providing a hydraulic press, the height of the bottom plate and the driving wheel, etc. is adjusted according to different specifications of the guiding wheel, with strong applicability. By providing an electric telescopic rod and a high-precision displacement sensor, the outer ring of the guiding wheel is detected during running-in to avoid unqualified shape and uneven surface of the guiding wheel.

[0007] However, when erecting the guiding wheel in this patent, the sling of the lifting device will interfere with the housing, and the guiding wheel cannot be normally hoisted onto the fixed rod. At this time, a large amount of auxiliary work needs to be done by the staff to complete the erection, which increases the labor intensity of the staff and reduces the erection efficiency.

[0008] Therefore, there is an urgent need for a guiding wheel running-in mechanism to facilitate the erection of the guiding wheel on the running-in equipment, reduce the labor intensity of the staff, and improve the erection efficiency. Content of the Utility Model

[0009] In view of the above technical problems, the utility model provides a running-in mechanism for a guide wheel, which is used to solve the problems that the existing running-in mechanism has a compact structure, is not convenient for the normal erection of the guide wheel, resulting in high labor intensity and low erection efficiency of the staff.

[0010] The above technical object of the utility model is achieved by the following technical solutions:

[0011] A running-in mechanism for a guide wheel includes an erection unit. Pressure units and drive units are respectively arranged on the left and right sides of the erection unit. A base is fixed to the bottom of the pressure unit and the erection unit. The erection unit includes a first support frame. Erection seats are symmetrically arranged on the top of the first support frame. Erection grooves are formed in the erection seats;

[0012] The pressure unit includes a second support frame. A hydraulic cylinder is arranged on the second support frame. The output end of the hydraulic cylinder points to the length direction of the erection groove;

[0013] The drive unit includes parallel ground rails. A displacement trolley is slidably arranged on the ground rails. A rotating frame is arranged on the displacement trolley. A drive wheel set for driving the guide wheel to rotate is arranged on the rotating frame. A drive motor is equipped on the drive wheel set. One end of the ground rail far away from the first support frame is detachably provided with a mounting beam. A drive cylinder is installed on the mounting beam. The output end of the drive cylinder is connected with the displacement trolley.

[0014] Further, the drive wheel set includes a first drive wheel and a second drive wheel. The first drive wheel and the second drive wheel are linked with the drive motor through a chain.

[0015] Further, mounting sleeves are arranged at the two ends of the mounting beam corresponding to the positions of the ground rails. Brake bolts are arranged on the mounting sleeves.

[0016] Further, the length of the erection groove is greater than two-thirds of the length of the guide wheel bracket.

[0017] Further, a pressure sensor is arranged at the output end of the hydraulic cylinder. The other end of the pressure sensor is connected with a top column.

[0018] Further, a limiting plate is arranged at one end of the erection groove close to the hydraulic cylinder.

[0019] To sum up, the beneficial technical effects of the utility model are as follows:

[0020] (1) The driving cylinder is used to control the displacement trolley to slide linearly along the ground rail. When installing the guide wheel, the displacement trolley is slid out along the ground rail to increase the distance between the driving unit and the installation unit, increasing the operating space for hoisting. Then, the guide wheel is successfully installed into the installation groove through the hoisting equipment. During this period, the staff does not need too much auxiliary installation, thus reducing the labor intensity and improving the installation efficiency at the same time.

[0021] (2) The driving motor drives the first driving wheel and the second driving wheel to drive the guide wheel to rotate, realizing double driving, making the driving force for the guide wheel more sufficient and the running-in more complete.

[0022] (3) The detachable mounting beam can conveniently replace the driving cylinder according to different sizes of guide wheels. Description of the Drawings

[0023] Figure 1 is the structural schematic diagram after the guide wheel is assembled;

[0024] Figure 2 is the schematic diagram of the overall structure of the present invention;

[0025] Figure 3 is Figure 2 the structural schematic diagram from another angle;

[0026] Figure 4 is Figure 2 the structural schematic diagram from the third angle;

[0027] Figure 5 is the usage schematic diagram of the present invention;

[0028] Figure 6 is Figure 5 the schematic diagram from another angle.

[0029] Reference Numerals: 1, guide wheel; 2, bracket; 3, mounting ring; 4, first support frame; 5, mounting seat; 6, mounting groove; 7, limit plate; 8, second support frame; 9, hydraulic cylinder; 10, pressure sensor; 11, top column; 12, ground rail; 13, displacement trolley; 14, rotating frame; 15, first driving wheel; 16, second driving wheel; 17, driving motor; 18, mounting beam; 19, driving cylinder; 20, mounting sleeve; 21, brake bolt. Detailed Embodiment

[0030] The present invention will be clearly and completely described below in conjunction with the embodiments.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0032] In the description of the embodiments, unless otherwise clearly specified and limited, terms such as "set" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or connected through an intermediate medium, or there can also be a connection inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] See the attached Figure 1 , which shows the structure diagram of the upper bracket 2 installed on the guide wheel 1. One end of the bracket 2 is provided with an installation ring 3. When the guide wheel 1 is further installed later, a spring needs to be installed into the installation ring 3, and an elastic pressure is provided for the entire guide wheel 1 through the spring. The present utility model simulates the rotation and running-in of the guide wheel 1 under this elastic pressure to detect whether its floating seal chamber leaks oil.

[0034] See the attached Figures 2-4 , which shows a running-in mechanism for a guide wheel, including a base. A pressure unit and a mounting unit are sequentially arranged on the base, and a driving unit is further arranged on one side of the mounting unit. The mounting unit includes a first support frame 4. Two mounting seats 5 are symmetrically arranged at the top of the first support frame 4. Mounting grooves 6 are formed on the opposite sides of the two mounting seats 5. When installing the guide wheel 1, the guide wheel 1 is lifted to the front ends of the two mounting grooves 6 by a lifting device, and then the brackets 2 are respectively inserted into the mounting grooves 6. At the same time, the length of the mounting groove 6 is greater than two-thirds of the length of the bracket 2, which can balance the weight of the entire guide wheel 1, move the center of gravity into the mounting groove 6, and make the guide wheel 1 more stable when mounted in the mounting groove 6, preventing the guide wheel 1 from falling off the mounting groove 6 under the action of gravity;

[0035] At the same time, a limiting plate 7 is arranged at one end of the mounting groove 6 close to the pressure unit. After the bracket 2 is inserted into the mounting groove 6, its end can be made to abut against the side wall of the limiting plate 7;

[0036] The pressure unit includes a second support frame 8. A hydraulic cylinder 9 is provided at the top of the second support frame 8. A pressure sensor 10 is provided at the output end of the hydraulic cylinder 9. One end of the pressure sensor 10 is threadedly connected with a top column 11. The diameter of the top column 11 is smaller than the inner diameter of the mounting ring 3. When in use, after the guide wheel 1 is placed on the mounting seat 5, the hydraulic cylinder 9 is used to drive the top column 11 to abut against the inside of the mounting ring 3 to apply pressure to the entire guide wheel 1. At the same time, the pressure sensor 10 is used to detect the magnitude of the output pressure value in real time;

[0037] As a running-in mechanism for the guide wheel, the driving unit includes two ground rails 12 arranged parallel to the action direction of the output end of the hydraulic cylinder 9. A displacement trolley 13 is equipped on the ground rails 12. A rotating frame 14 is provided at the top of the displacement trolley 13. A first driving wheel 15 and a second driving wheel 16 are rotatably provided on the rotating frame 14. The first driving wheel 15 and the second driving wheel 16 are driven in cooperation through a gear and a chain. At the same time, a driving motor 17 is fixedly provided on the displacement trolley 13. When in use, the first driving wheel 15 and the second driving wheel 16 are abutted against the guide wheel 1, and then running-in rotation is realized under the drive of the driving motor 17;

[0038] At the same time, one end of the ground rail 12 away from the first support frame 4 is provided with a mounting beam 18. Mounting sleeves 20 are provided at the positions corresponding to the ground rails 12 at both ends of the mounting beam 18. Brake bolts 21 are equipped on the mounting sleeves 20. Fixing is achieved through the frictional force between the brake bolts 21 and the ground rails 12. A driving cylinder 19 is fixed on the mounting beam 18 through a mounting plate. The output end of the driving cylinder 19 is connected to the displacement trolley 13. The driving cylinder 19 is used to drive the displacement trolley 13 to move linearly along the ground rail 12. When the guide wheel 1 is being erected, the driving cylinder 19 drives the displacement trolley 13 to slide outwards along the ground rail 12. At this time, the distance between the driving unit and the erection unit is increased, thereby increasing the operating space for the lifting equipment to hoist the guide wheel 1, avoiding interference in structure between the lifting equipment and the running-in mechanism, enabling the lifting equipment to independently complete the erection of the guide wheel 1, greatly reducing the auxiliary work of the staff, and thus reducing the labor intensity and improving the erection efficiency;

[0039] During erection, refer to the appendix Figures 5-6, first, the driving cylinder 19 is driven to drive the displacement trolley 13 to slide outwards along the ground rail 12 to increase the distance between the driving unit and the erection unit and avoid structural interference. Then, the lifting equipment is used to lift the guide wheel 1 to the front end of the erection groove 6 and align the bracket 2 with the erection groove 6. Then, with the simple assistance of the lifting equipment and the staff, the bracket 2 is inserted into the erection groove 6 and abutted against the side wall of the limit plate 7. Then, the driving cylinder 19 is used to drive the displacement trolley 13 to slide in the reverse direction so that the first driving wheel 15 and the second driving wheel 16 are abutted against the guide wheel 1. Then, the hydraulic cylinder 9 is used to drive the top column 11 to abut against the installation ring 3. When the pressure on the pressure sensor 10 reaches the set pressure, the output stops. Then, the driving motor 17 is started to drive the first driving wheel 15 and the second driving wheel 16 to rotate by means of a chain. At the same time, the guide wheel 1 follows and completes the running-in under the frictional action of the first driving wheel 15 and the second driving wheel 16. During the running-in process, it can be observed whether the floating seal chamber leaks oil under pressure.

[0040] The above is only the preferred specific embodiment of the present invention, and does not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A guide wheel running-in mechanism, comprising a mounting unit, a pressure unit and a driving unit are respectively provided on the left and right sides of the mounting unit, and a base is fixed at the bottom of the pressure unit and the mounting unit, characterized in that: The erection unit comprises a first support frame (4), a erection seat (5) is symmetrically arranged on the top of the first support frame (4), and an erection groove (6) is provided on the erection seat (5); The pressure unit comprises a second support frame (8), on which a hydraulic cylinder (9) is provided, and an output end of the hydraulic cylinder (9) points in the length direction of the mounting groove (6); The driving unit comprises a parallelly arranged ground rail (12), a displacement trolley (13) is slidably arranged on the ground rail (12), a rotating frame (14) is arranged on the displacement trolley (13), a driving wheel group for driving the guide wheel (1) to rotate is arranged on the rotating frame (14), and a driving motor (17) is arranged on the driving wheel group; a mounting beam (18) is detachably arranged at one end of the ground rail (12) away from the first support frame (4), a driving cylinder (19) is mounted on the mounting beam (18), and an output end of the driving cylinder (19) is connected to the displacement trolley (13).

2. A guide wheel running-in mechanism according to claim 1, characterized in that: The driving wheel set comprises a first driving wheel (15) and a second driving wheel (16), and the first driving wheel (15) and the second driving wheel (16) are linked to a driving motor (17) via a chain.

3. The guide wheel running-in mechanism according to claim 1, characterized in that: Mounting sleeves (20) are provided at positions of both ends of the mounting beam (18) corresponding to the ground rail (12), and brake bolts (21) are provided on the mounting sleeves (20).

4. The guide wheel running-in mechanism according to claim 1, characterized in that: The length of the mounting groove (6) is greater than two thirds of the length of the guide wheel (1) bracket (2).

5. The guide wheel running-in mechanism according to claim 1, characterized in that: The output end of the hydraulic cylinder (9) is provided with a pressure sensor (10), and the other end of the pressure sensor (10) is connected to a top column (11).

6. The guide wheel running-in mechanism according to claim 1, characterized in that: A limiting plate (7) is provided at one end of the mounting groove (6) close to the hydraulic cylinder (9).

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