A method for measuring the gasket of a passive pulley

Abstract

The present invention discloses a method for measuring the gasket of a passive pulley, comprising the following steps: moving the upper cone disk of the pulley of the passive pulley upward by 4.5-6mm through a passive pulley puller; the angle between the first surface and the second surface of the gauge block is equal to the angle between the two cone disks of the passive pulley, and the gauge block is placed between the two cone disks of the passive pulley, so that the two surfaces of the gauge block are respectively close to the two cone disks of the passive pulley; and the feeler gauge is placed between the third surface of the gauge block and the upper cone disk of the pulley of the active pulley, when the friction between the feeler gauge and the upper cone disk of the pulley of the active pulley can drive the active pulley assembly to rotate, the thickness of the feeler gauge at this time is the thickness of the gasket. Compared with the prior art, in the present invention, the height of the gasket is measured by combining the gauge block with the feeler gauge. Compared with the traditional measurement, this method does not need to replace the gauge block, so it is conducive to improving the accuracy of the gasket by improving the accuracy of the gauge block.

Description

Technical Field

[0001] The invention relates to the technical field of gasket selection of a gearbox, and in particular to a method for measuring a gasket of a passive pulley. Background Art

[0002] When assembling the continuously variable transmission pulley assembly, it is necessary to ensure that the vertical distance between the cone surface of the driving pulley shaft and the cone surface of the driven pulley shaft is within the design range after installation. For example, in the assembly of the transmission (taking the RDC18 model as an example), the vertical distance between the cone surfaces of the driving pulley shaft and the driven pulley shaft is required to be 34.24±0.05mm after assembly. This requires the selection of a gasket of appropriate thickness to be placed under the driven pulley. In the prior art, a gauge block is often used for measurement to obtain the thickness of the gasket. In this process, the accuracy of the gasket depends on the accuracy of the gauge block, and the two are in direct proportion. The patent with the publication number CN110411318A discloses a pulley installation pad bridge tool, including a pad bridge and several measuring blocks of different sizes, wherein the top surface of the pad bridge is respectively provided with mounting holes that match the bearings of the driving pulley assembly and the driven pulley assembly, and the bottom surface of the pad bridge is provided with a fixing frame for fixing the pad bridge to the rear housing of the transmission. When the driving pulley assembly and the driven pulley assembly are installed on the rear housing and the pad bridge, the measuring block is used to measure the vertical distance of the fixed cone surface of the driving and driven pulley assemblies. The thickness selection range of the measuring block of the patent is the height interval D±0.35. If the accuracy of the measuring block is 0.05, the number of measuring blocks is 15, specifically: D, D±0.05, D±0.1, D±0.15, D±0.2, D±0.25, D±0.3, D±0.35. This method requires a large number of measuring blocks, and multiple measurements are required to obtain a measuring block that meets the thickness requirements. This results in the number of measuring blocks increasing linearly if a gasket with higher precision is desired, which makes it difficult to manufacture measuring blocks and select measuring blocks that meet the thickness requirements during measurement. Summary of the invention

[0003] The invention provides a method for measuring a gasket of a passive pulley, which is used to solve the problem that the accuracy of the gasket is difficult to improve in the prior art.

[0004] The present invention provides a method for measuring a gasket of a passive pulley, comprising the following steps:

[0005] Step 1: Install the driving pulley assembly and the passive pulley assembly into the rear housing;

[0006] Step 2: Move the upper cone of the passive pulley upward by 4.5-6 mm using a passive pulley puller;

[0007] Step 3: The first surface and the third surface of the gauge block are arranged parallel to each other, the second surface of the gauge block is arranged between the first surface and the third surface, the angle between the first surface and the second surface of the gauge block is equal to the angle between the upper cone disk of the driven pulley and the lower cone disk of the pulley, the gauge block is placed between the upper cone disk of the driven pulley and the lower cone disk of the pulley, the first surface and the second surface of the gauge block are respectively in close contact with the upper cone disk of the driven pulley and the lower cone disk of the pulley, at this time, the third surface of the gauge block is parallel to the upper cone disk of the driving pulley and there is a gap;

[0008] Step 4: Place the feeler gauge between the third surface of the gauge block and the upper cone disk of the pulley of the driving pulley. When the friction between the feeler gauge and the upper cone disk of the pulley of the driving pulley can drive the driving pulley assembly to rotate, record the thickness value of the feeler gauge. At this time, the thickness of the feeler gauge is the thickness of the gasket.

[0009] Preferably, the angle between the first surface and the second surface of the gauge block is 22 0 .

[0010] Preferably, the distance between the first surface and the third surface of the gauge block is 32.24±0.005 mm.

[0011] Preferably, the gauge block has a through hole between the first surface and the third surface.

[0012] Preferably, a convex plate extends from the upper end of the gauge block toward a side away from the second surface, and an upper end surface of the convex plate is a part of the first surface.

[0013] Preferably, the passive pulley puller comprises a limiting semi-ring, a support frame and a driving member, the limiting semi-ring is clamped with the passive pulley assembly, the support frame is fixedly connected to the limiting semi-ring, one end of the driving member mounted on the support frame is connected to the axle of the passive pulley assembly, and the driving member is used to drive the limiting semi-ring to move upward.

[0014] Preferably, the limiting semi-ring is inserted between the passive pulley and the passive oil cylinder.

[0015] Preferably, the driving member is a screw, the lower end of which is rotatably connected to the axle of the passive pulley assembly, and the screw is threadedly connected to the support frame.

[0016] Compared with the prior art, in the present invention, the height of the gasket is measured by combining a gauge block with a feeler gauge. Compared with the traditional measurement, this method does not require the replacement of the gauge block, so it is beneficial to improve the accuracy of the gasket by improving the accuracy of the gauge block. For example, when the accuracy of the gauge block of the present invention is 0.005, the number of gauge blocks produced in the traditional measurement is 141, which is not easy to make gauge blocks and select the measuring blocks that meet the thickness in the measurement. The angle of the gauge block is matched with the angle of the two cone disks of the passive pulley to ensure that the first surface of the gauge block is parallel to the cone disk on the pulley of the active pulley. In this way, it is convenient to adjust the gasket selection environment. The range of upward movement of the cone disk on the pulley of the passive pulley of the present invention is: 4.5-6mm. Compared with the traditional measurement method of using a gasket selection bridge to simulate the housing in the gearbox and assembling the active and passive pulley assemblies to the actual box-closed state, the present invention has a large adjustment range and low adjustment difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a work flow chart of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the present invention;

[0020] Figure 3 A front view of a gauge block of the present invention;

[0021] Figure 4 A top view of the gauge block of the present invention;

[0022] Figure 5 This is a physical picture of the measuring gasket of the present invention.

[0023] Reference numerals:

[0024] 1. Driving pulley assembly, 2. Passive pulley assembly, 11. Driving pulley, 21. Passive pulley, 22. Passive oil cylinder, 211. Upper cone disk of pulley, 212. Lower cone disk of pulley, 3. Gauge block, 31. First surface, 32. Second surface, 33. Third surface, 34. Through hole, 35. Convex plate. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See attached Figure 1-2 This embodiment provides a method for measuring a gasket of a passive pulley, comprising the following steps:

[0027] Step 1: Install the driving pulley assembly 1 and the passive pulley assembly 2 into the rear housing;

[0028] Step 2: Pull up the upper cone disk 211 of the passive pulley 21 through the passive pulley pulley to separate the upper cone disk 211 and the lower cone disk 212 of the passive pulley 21. The upward movement range of the upper cone disk 211 of the passive pulley 21 is: 4.5-6mm; the upward movement distance of the upper cone disk 211 of the passive pulley 21 is related to the depth of insertion of the gauge block 3. The upper cone disk 211 of the passive pulley 21 moves up a small distance. When the gauge block 3 is placed between the upper cone disk 211 and the lower cone disk 212 of the passive pulley 21, the gauge block 3 is inserted shallowly; the upper cone disk 211 of the passive pulley 21 moves up a large distance. When the gauge block 3 is placed between the upper cone disk 211 and the lower cone disk 212 of the passive pulley 21, the gauge block 3 is inserted deeply.

[0029] See attached Figure 3-4 Step 3: The first surface 31 of the gauge block 3 is parallel to the third surface 33, and the second surface 32 of the gauge block 3 is arranged between the first surface 31 and the third surface 33. The angle between the first surface 31 and the second surface 32 of the gauge block 3 is equal to the angle between the upper cone disk 211 and the lower cone disk 212 of the driven pulley 21. Specifically, the angle between the first surface 31 and the second surface 32 of the gauge block 3 is 22 0 Put the gauge block 3 between the upper cone disk 211 and the lower cone disk 212 of the driven pulley 21, so that the first surface 31 and the second surface 32 of the gauge block 3 are respectively in close contact with the upper cone disk 211 and the lower cone disk 212 of the driven pulley 21, and the third surface 33 of the gauge block 3 is parallel to the upper cone disk 211 of the driving pulley 11 and there is a gap;

[0030] Step 4: Place the feeler gauge between the third surface 33 of the gauge block 3 and the upper cone disk 211 of the pulley of the driving pulley 11. When the friction between the feeler gauge and the upper cone disk 211 of the pulley of the driving pulley 11 can drive the driving pulley assembly 1 to rotate, the specific judgment standard is: after the feeler gauge is inserted, the feeler gauge has a sense of adhesion and can slightly drive the driving pulley assembly 1 to rotate; record the thickness value of the feeler gauge at this time, and the thickness of the feeler gauge at this time is the thickness of the gasket.

[0031] In this embodiment, the distance between the first surface 31 and the third surface 33 of the gauge block 3 is 32.24±0.005 mm, that is, the thickness accuracy of the gauge block 3 is 0.005 mm.

[0032] A through hole 34 is formed between the first surface 31 and the third surface 33 of the gauge block 3 . This arrangement facilitates fixing a handle in the through hole 34 to facilitate taking the gauge block 3 .

[0033] Specifically, a convex plate 35 extends from the upper end of the gauge block 3 to a side away from the second surface 32 , the upper end surface of the convex plate 35 is a part of the first surface 31 , and the convex plate 35 extends between the two cones of the driving pulley 11 .

[0034] The passive pulley puller includes a limiting half ring, a support frame and a driving member. The limiting half ring is clamped with the passive pulley assembly 2, the support frame is fixedly connected to the limiting half ring, one end of the driving member installed on the support frame is connected to the axle of the passive pulley assembly 2, and the driving member is used to drive the limiting half ring to move upward.

[0035] The limiting half ring is inserted between the passive pulley 21 and the passive oil cylinder 22 .

[0036] The driving member is a screw rod, the lower end of which is rotationally connected to the axle of the driven pulley assembly 2, and the screw rod is threadedly connected to the support frame.

[0037] The steps of pulling up the upper cone disk 211 of the passive pulley 21 by the passive pulley puller are as follows: insert the limiting semi-ring between the passive pulley 21 and the passive oil cylinder 22, and then rotate the screw to move the lower end of the screw down to the axle of the passive pulley assembly 2, the screw and the axle of the passive pulley assembly 2 are connected by a bearing, and then continue to rotate the screw, the screw drives the support frame to move up, and then drives the upper cone disk 211 of the passive pulley 21 to move upward through the limiting semi-ring.

[0038] In the present invention, the height of the gasket is measured by combining the gauge block 3 with the feeler gauge. Compared with the traditional measurement, this method does not need to replace the gauge block 3. Therefore, it is beneficial to improve the accuracy of the gasket by improving the accuracy of the gauge block 3. For example, when the accuracy of the gauge block 3 of the present invention is 0.005, the number of gauge blocks 3 produced in the traditional measurement is 141, which is not easy to make the gauge block 3 and select the measuring block 3 that meets the thickness in the measurement. The angle of the gauge block 3 matches the angle of the two cone disks of the passive pulley 21 to ensure that the first surface 31 of the gauge block 3 is parallel to the upper cone disk 211 of the active pulley 11. In this way, it is convenient to adjust the gasket selection environment. The upper cone disk 211 of the passive pulley 21 of the present invention moves upward in a range of 4.5-6mm. Compared with the method of using a gasket selection bridge to simulate the housing in the gearbox in the traditional measurement and assembling the active and passive pulley assemblies to the actual box-closed state, the present invention has a large adjustment range and low adjustment difficulty.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for measuring a gasket of a passive pulley, characterized in that: The steps include: Step 1: Install the driving pulley assembly and the passive pulley assembly into the rear housing; Step 2: Move the upper cone of the passive pulley upward by 4.5-6 mm using a passive pulley puller; Step 3: The first surface and the third surface of the gauge block are arranged parallel to each other, the second surface of the gauge block is arranged between the first surface and the third surface, the angle between the first surface and the second surface of the gauge block is equal to the angle between the upper cone disk of the driven pulley and the lower cone disk of the pulley, the gauge block is placed between the upper cone disk of the driven pulley and the lower cone disk of the pulley, the first surface and the second surface of the gauge block are respectively in close contact with the upper cone disk of the driven pulley and the lower cone disk of the pulley, at this time, the third surface of the gauge block is parallel to the upper cone disk of the driving pulley and there is a gap; Step 4: Place a feeler gauge between the third surface of the gauge block and the upper cone disk of the pulley of the driving pulley. When the friction between the feeler gauge and the upper cone disk of the pulley of the driving pulley can drive the driving pulley assembly to rotate, the thickness of the feeler gauge is the thickness of the gasket. The angle between the first surface and the second surface of the gauge block is 22 degrees; The distance between the first surface and the third surface of the gauge block is 32.24±0.005 mm; The passive pulley puller includes a limiting semi-ring, a support frame and a driving member, the limiting semi-ring is clamped with the passive pulley assembly, the support frame is fixedly connected to the limiting semi-ring, one end of the driving member installed on the support frame is connected to the wheel axle of the passive pulley assembly, and the driving member is used to drive the limiting semi-ring to move upward.

2. The method for measuring the gasket of a passive pulley according to claim 1, characterized in that: The gauge block has a through hole between the first surface and the third surface.

3. The method for measuring the gasket of a passive pulley according to claim 1, characterized in that: A convex plate extends from the upper end of the gauge block to a side away from the second surface, and the upper end surface of the convex plate is a part of the first surface.

4. The method for measuring the gasket of a passive pulley according to claim 1, characterized in that: The limiting semi-ring is clamped between the passive pulley and the passive oil cylinder.

5. The method for measuring the spacer of a passive pulley according to claim 4, characterized in that: The driving member is a screw rod, the lower end of which is rotationally connected to the wheel shaft of the passive pulley assembly, and the screw rod is threadedly connected to the support frame.

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