EPS worm gear and worm center distance detection device

Abstract

The utility model relates to the technical field of automobile parts, in particular to an EPS worm gear and worm center distance detection device, which comprises a bottom plate (1). A worm support structure and a worm gear support structure are respectively arranged on the bottom plate (1); the worm support structure is provided with a slide rail structure and a measuring assembly. The slide rail structure is connected with a worm shaft (2); the worm gear bracket structure is connected with a worm gear (3); the worm shaft (2) is meshed with the worm gear (3); the measuring assembly abuts against the worm shaft (2). The slide rail structure can adjust the vertical installation position of the worm shaft, so that the device can achieve the installation and detection of worm wheels and worm shafts of different specifications, and is high in universality. The measuring assembly measures the matching center distance between the worm shaft and the worm gear; meanwhile, the meshing precision of the worm shaft and the worm gear can be detected, and the detection precision and reliability are fully guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and more specifically, to an EPS worm gear center distance detection device. Background Technology

[0002] C-EPS (Column-Electric Power Steering), P-EPS (Pinion-Electric Power Steering), and DP-EPS (Dual Pinion-Electric Power Steering) systems all utilize worm gear pairs. Measuring the center distance between the two parts during worm gear pairing is inconvenient, hindering analysis of worm gear meshing. Poor worm gear meshing can easily lead to abnormal noises and other malfunctions. Existing testing devices have low accuracy and cannot test worm gears of different specifications, resulting in poor versatility.

[0003] The applicant discovered through a search that Chinese patent document with publication number 206192650U, published on May 24, 2017, discloses a worm gear testing device. The device has four mounting holes and a base connection hole on the base, and a bracket with a bracket connection hole, a support hole, an observation port, and a bearing hole. The base and bracket are fixedly connected through the base connection hole and the bracket connection hole. One end of the support shaft has a retaining ring groove, and the other end has a limiting platform. The retaining ring is installed in the retaining ring groove. The limiting block has a load rod fixing hole and a positioning hole. The positioning pin is connected to the limiting block. One end of the load rod has a thread, and the threaded end of the load rod is installed in the load rod fixing hole. The bracket connection hole and the base connection hole are positioned correspondingly, and the angle between the axes of the two holes is consistent with the spatial transmission angle of the worm gear. The worm gear and worm constitute a worm gear mechanism. This device also fails to solve the aforementioned technical problem.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to provide an EPS worm gear center distance detection device that can accurately detect worm gears of different specifications. Utility Model Content

[0005] The purpose of this invention is to provide an EPS worm gear center distance detection device that can accurately detect worm gears of different specifications.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an EPS worm gear center distance detection device, including a base plate; a worm support structure and a worm wheel support structure are respectively provided on the base plate; a slide rail structure and a measuring component are respectively provided on the worm support structure; a worm shaft is connected to the slide rail structure; a worm wheel is connected to the worm wheel support structure; the worm shaft meshes with the worm wheel; the measuring component abuts against the worm shaft; the worm support structure includes a first support and a second support; the slide rail structure includes a slide rail; the slide rail is respectively provided on the first support and the second support; a slide seat is provided on the slide rail; the end of the worm shaft is connected to the slide seat; a slide groove is provided on the slide rail; a slot is provided on one side of the slide seat, and a mounting plate is provided on the other side of the slide seat; the slide rail is located in the slot; a guide tooth is provided in the slot; the guide tooth is located in the slide groove; a center point is provided on the mounting plate; a connecting hole is provided at the end of the worm shaft; the center point is connected to the connecting hole.

[0007] The mounting plate is connected to a slider lock; the slider lock includes a side plate; the slide rail is located between adjacent side plates; the side plate has a threaded hole; a screw is provided in the threaded hole; one end of the screw is connected to a handle, and the other end of the screw abuts against the slide rail.

[0008] The base plate is provided with a guide groove; the bottom of the first bracket and the second bracket are both provided with an insertion block; the insertion block is located in the guide groove.

[0009] The first bracket includes a support rod; the top of the support rod is provided with a mounting crossbar; the measuring component includes a dial indicator; the mounting crossbar is provided with a mounting hole; the dial indicator includes a measuring rod; the measuring rod is connected in the mounting hole, and the measuring head of the measuring rod abuts against the worm gear shaft.

[0010] The worm gear support structure includes a support plate; the support plate is disposed between the first support and the second support; the support plate is provided with a limiting groove; the worm gear includes a connecting shaft; the connecting shaft is disposed in the limiting groove; the worm gear is disposed at the bottom of the worm shaft, and the worm gear meshes with the worm shaft.

[0011] The guide grooves are respectively located at both ends of the base plate; the support plates are respectively located on both sides of the worm gear; the cross-section of the limiting groove is V-shaped.

[0012] The beneficial effects of this application are as follows:

[0013] This application includes a worm gear support structure with a slide rail structure. Both ends of the worm shaft are connected to the slide rail structure, allowing adjustment of the vertical installation position of the worm shaft to accommodate the center distance detection of worm wheels of different diameters. The worm gear support structure includes a first support and a second support. Insert blocks are provided at the bottom of the first and second supports. The insert blocks cooperate with guide grooves on the base plate to adjust the distance between the first and second supports, thereby enabling the installation and detection of worm shafts of different sizes. A support plate is provided on the base plate, and a V-shaped limiting groove is provided on the support plate to facilitate the installation of worm wheels of different specifications. This device can realize the installation and detection of worm wheels and worm shafts of different specifications, exhibiting strong versatility.

[0014] This application allows for the measurement of the center distance between the worm shaft and the worm wheel using a height gauge; simultaneously, by rotating the worm wheel, the meshing accuracy of the worm shaft and the worm wheel can be detected using a dial indicator.

[0015] This fully ensures the accuracy and reliability of the testing. Attached Figure Description

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0017] Figure 1 This is a schematic diagram of the EPS worm gear center distance detection device.

[0018] Figure 2 This is a schematic diagram showing the working state of the EPS worm gear center distance detection device.

[0019] Figure 3 This is a schematic diagram of the slide block of the EPS worm gear center distance detection device.

[0020] The markings in the above figures are all:

[0021] The diagram is marked as follows:

[0022] 1. Base plate, 101. Guide groove,

[0023] 2. Worm shaft, 201, connecting hole.

[0024] 3. Worm gear, 301, connecting shaft,

[0025] 4. First bracket, 401. Support rod, 402. Mounting crossbar, 403. Mounting hole.

[0026] 5. Second bracket, 501, insert block,

[0027] 6. Slide rail; 601. Slide block; 602. Slide groove; 603. Slot; 604. Mounting plate; 605. Guide tooth.

[0028] 606, Top-notch

[0029] 7. Sliding lock; 701. Side plate; 702. Threaded hole; 703. Screw; 704. Handle.

[0030] 8. Dial indicator, 801, measuring rod,

[0031] 9. Support plate, 901. Limiting groove. Detailed Implementation

[0032] The specific embodiments of this utility model will now be described with reference to the accompanying drawings.

[0033] The purpose of this detailed explanation is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of this utility model, and to facilitate its implementation.

[0034] Figure 1-2 The EPS worm gear center distance detection device shown includes a base plate 1; a worm support structure and a worm wheel support structure are respectively provided on the base plate 1; a slide rail structure and a measuring component are respectively provided on the worm support structure; the slide rail structure is connected to the worm shaft 2; the worm wheel support structure is connected to the worm wheel 3; the worm shaft 2 and the worm wheel 3 mesh; the measuring component abuts against the worm shaft 2.

[0035] The worm gear support structure is equipped with a slide rail structure; both ends of the worm shaft 2 are connected to the slide rail structure, thereby allowing adjustment of the vertical installation position of the worm shaft 2 and accommodating the center distance detection of worm wheels 3 of different diameters. This enables the device to install and detect worm wheels 3 and worm shaft 2 of different specifications, demonstrating strong versatility. The measuring component measures the mating center distance between the worm shaft 2 and worm wheel 3; simultaneously, it can detect the meshing accuracy of the worm shaft 2 and worm wheel 3, fully ensuring the accuracy and reliability of the detection.

[0036] The worm gear support structure includes a first support 4 and a second support 5; the slide rail structure includes a slide rail 6; the slide rail 6 is respectively mounted on the first support 4 and the second support 5; a slide seat 601 is provided on the slide rail 6; the end of the worm shaft 2 is connected to the slide seat 601.

[0037] The first bracket 4 and the second bracket 5 are both fixedly connected to slide rails 6; the slide rails 6 are vertically arranged; the slide block 601 is connected to the slide rails 6 and can slide flexibly along the slide rails 6; the end of the worm shaft 2 is fixedly connected to the slide block 601.

[0038] like Figure 3As shown, the slide rail 6 is provided with a slide groove 602; the slide block 601 is provided with a slot 603 on one side and a mounting plate 604 on the other side; the slide rail 6 is located in the slot 603; the slot 603 is provided with a guide tooth 605; the guide tooth 605 is located in the slide groove 602; the mounting plate 604 is provided with a center point 606; the end of the worm shaft 2 is provided with a connecting hole 201; the center point 606 is connected to the connecting hole 201.

[0039] Guide teeth 605 are respectively provided on the inner walls of both sides of the slot 603; the slide 601 is connected to the slide rail 6 through the slot 603, and the guide teeth 605 are connected in the slide groove 602, so as to realize the limiting and guiding of the slide 601 on the slide rail 6, and to realize the flexible sliding of the slide 601 along the slide rail 6; the slide 601 is connected to the mounting plate 604 by bolts; the mounting plate 604 is fixedly connected to the center point 606; both ends of the worm shaft 2 are provided with connecting holes 201, and the center point 606 is inserted into the connecting holes 201, so as to realize the fixation of the worm shaft 2 on the slide 601, thereby realizing the adjustment of the vertical installation position of the worm shaft 2.

[0040] Mounting plate 604 is connected to slider lock 7; slider lock 7 includes side plate 701; slide rail 6 is located between adjacent side plates 701; side plate 701 is provided with threaded hole 702; threaded hole 702 is provided with screw 703; one end of screw 703 is connected to handle 704, and the other end of screw 703 is pressed against slide rail 6.

[0041] The slider lock 7 has a U-shaped structure; both sides of the slider lock 7 are provided with side plates 701; the slider lock 7 is located at the bottom of the slide block 601 and is fixedly connected to the mounting plate 604; the screw 703 is fixedly connected to the handle 704; when the handle 704 is rotated, the screw 703 moves axially along the threaded hole 702, and the screw 703 abuts against the side of the slide rail 6, thus realizing the locking operation between the slider lock 7 and the slide block 601.

[0042] The base plate 1 is provided with a guide groove 101; the bottom of the first bracket 4 and the second bracket 5 are both provided with an insertion block 501; the insertion block 501 is located in the guide groove 101.

[0043] The guide groove 101 is a through groove; the guide groove 101 is respectively provided at both ends of the base plate 1; the bottom of the first bracket 4 and the second bracket 5 are both fixedly connected with the insert block 501; the insert block 501 is inserted into the guide groove 101 and can slide in the guide groove 101, thereby realizing the adjustment of the distance between the first bracket 4 and the second bracket 5.

[0044] The first bracket 4 includes a support rod 401; the top of the support rod 401 is provided with a mounting crossbar 402; the measuring component includes a dial indicator 8; the mounting crossbar 402 is provided with a mounting hole 403; the dial indicator 8 includes a measuring rod 801; the measuring rod 801 is connected in the mounting hole 403, and the measuring head of the measuring rod 801 abuts against the worm shaft 2.

[0045] The first bracket 4 has an L-shaped structure; the mounting crossbar 402 and the support rod 401 are integrated; the mounting hole 403 is a through hole, and the mounting hole 403 is located at the end of the mounting crossbar 402 away from the support rod 401; the measuring rod 801 of the dial indicator 8 is inserted into the mounting hole 403, which can fix the dial indicator 8; the detection head of the measuring rod 801 is pressed against the worm shaft 2. When the meshing accuracy between the worm shaft 2 and the worm wheel 3 is not high, the detection head will be lifted or loosened. At this time, the change of the dial indicator 8 index can be observed manually to detect whether the meshing accuracy between the worm shaft 2 and the worm wheel 3 is qualified.

[0046] The worm gear support structure includes a support plate 9; the support plate 9 is located between the first support 4 and the second support 5; the support plate 9 is provided with a limiting groove 901; the worm gear 3 includes a connecting shaft 301; the connecting shaft 301 is located in the limiting groove 901; the worm gear 3 is located at the bottom of the worm shaft 2, and the worm gear 3 meshes with the worm shaft 2.

[0047] Two support plates 9 are provided between the first bracket 4 and the second bracket 5; the support plates 9 are fixedly connected to the base plate 1; the limiting groove 901 is a V-shaped groove, and the limiting groove 901 is located on the top of the support plate 9, and the connecting shaft 301 is located in the limiting groove 901, which can realize the stable fixation of the worm gear 3.

[0048] Guide grooves 101 are respectively located at both ends of the base plate 1; support plates 9 are respectively located on both sides of the worm gear 3; the cross section of the limiting groove 901 is V-shaped.

[0049] The specific workflow of this utility model is as follows:

[0050] First, the worm gear 3 is installed on the support plate 9 on the base plate 1, thus achieving stable installation of the worm gear 3 on this device; then, the two ends of the worm shaft 2 are stably installed on the slide 601 through the center point 606, thereby adjusting the height of the worm shaft 2 so that the worm shaft 2 meshes with the worm gear 3; the operator manually measures the center distance between the worm shaft 2 and the worm gear 3 using a height gauge; then, the worm shaft 2 or the worm gear 3 is driven to rotate, and the index change of the dial indicator 8 is observed to check whether the meshing accuracy of the worm shaft 2 and the worm gear 3 is qualified.

[0051] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. An EPS worm and gear center distance detection device, characterized by: The utility model provides a worm gear measuring device, including bottom plate (1), worm support structure and worm wheel support structure are equipped with respectively on bottom plate (1), slide rail structure and measuring assembly are equipped with respectively on worm support structure, worm shaft (2) is connected with slide rail structure, worm wheel (3) is connected with worm wheel support structure, worm shaft (2) is engaged with worm wheel (3), measuring assembly is abutted with worm shaft (2), worm support structure includes first support (4) and second support (5), slide rail structure includes slide rail (6), slide rail (6) is equipped with respectively on first support (4) and second support (5), slide rail (6) is equipped with slide seat (601), the end of worm shaft (2) is connected on slide seat (601), slide rail (6) is equipped with sliding slot (602), one side of slide seat (601) is equipped with clamping groove (603), the other side of slide seat (601) is equipped with mounting plate (604), slide rail (6) is equipped in clamping groove (603), clamping groove (603) is equipped with guide tooth (605), guide tooth (605) is equipped in sliding slot (602), mounting plate (604) is equipped with centre (606), the end of worm shaft (2) is equipped with connecting hole (201), centre (606) is connected in connecting hole (201).

2. The EPS worm and gear center distance detection device according to claim 1, characterized in that: Mounting plate (604) is connected with slide block lock (7), slide block lock (7) includes side plate (701), slide rail (6) is equipped between adjacent side plate (701), side plate (701) is equipped with threaded hole (702), threaded hole (702) is equipped with screw rod (703), one end of screw rod (703) is connected with handle (704), the other end of screw rod (703) is abutted with slide rail (6).

3. The EPS worm gear center distance detection device according to claim 1 or 2, characterized by: Bottom plate (1) is equipped with guide groove (101), the bottom of first support (4) and second support (5) is equipped with plug -in block (501), plug -in block (501) is equipped in guide groove (101).

4. The EPS worm and gear center distance detection device according to claim 3, characterized in that: First support (4) includes support rod (401), the top of support rod (401) is equipped with mounting cross bar (402), measuring assembly includes dial indicator (8), mounting cross bar (402) is equipped with mounting hole (403), dial indicator (8) includes measuring rod (801), measuring rod (801) is connected in mounting hole (403), and the detection head of measuring rod (801) is abutted with worm shaft (2).

5. The EPS worm and gear center distance detection device according to claim 4, characterized in that: Worm wheel support structure includes support plate (9), support plate (9) is equipped between first support (4) and second support (5), support plate (9) is equipped with limiting groove (901), worm wheel (3) includes connecting shaft (301), connecting shaft (301) is equipped in limiting groove (901), worm wheel (3) is equipped at the bottom of worm shaft (2), and worm wheel (3) is engaged with worm shaft (2).

6. The EPS worm and gear center distance detection device according to claim 5, characterized in that: The guide slots (101) are respectively arranged at two ends of the bottom plate (1); the support plates (9) are respectively arranged at two sides of the worm wheel (3); and the limiting slots (901) are V-shaped in section.

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