Crank concentricity detection tool

Abstract

The utility model provides a crank concentricity detection tool comprising a rotating disc provided with a groove used for placing a crank; the clamping mechanism comprises a supporting frame and a meter clamp arranged on the supporting frame, and the clamping mechanism is used for installing a measuring meter; and the rotating mechanism is connected with the rotating disc so as to drive the rotating disc to rotate in the circumferential direction of the rotating disc. When the crank concentricity detection tool is used, a crank is placed in the groove of the rotating disc, then the meter clamp clamps the measuring meter, the detection end of the measuring meter is in contact with a shaft rod of the crank, then the rotating mechanism enables the rotating disc to rotate, concentricity measurement of the shaft rod is achieved, the crank concentricity detection tool is easy and convenient to operate, testing is convenient, and the detection efficiency is improved. And the device does not need to be fixed by multiple persons and can be operated by one person, so that the detection efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crank detection, in particular to a crank concentricity detection tool. Background Art

[0002] The crank is one of the most important parts of the engine. It cooperates with the connecting rod to convert the gas pressure acting on the piston into rotational power and then transmits it to the transmission mechanism. When working, the crank will be subjected to the gas pressure, inertia force and inertia moment. The force is large and complex, and it also has to withstand the impact of alternating loads. At the same time, the crank is a high-speed rotating component. Therefore, during manufacturing, the engine crank is required to have not only sufficient rigidity and strength, but also good concentricity to meet the matching accuracy with other workpieces and improve the use effect.

[0003] Currently, the concentricity of the crank is usually detected by multiple inspectors who fix it manually and then use testing instruments to detect it. This is time-consuming and labor-intensive, cannot meet the needs of large-scale production, and has low detection accuracy. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a crank concentricity detection tool to solve the technical problem that in the related technology, the crank concentricity detection is often performed by multiple inspectors through manual fixation and then using a detection instrument for detection, which is time-consuming and labor-intensive, cannot meet the needs of large-scale production, and has low detection accuracy.

[0005] The utility model provides a crank concentricity detection tool, comprising:

[0006] A rotating disk having a groove for placing a crank;

[0007] A clamping mechanism, the clamping mechanism comprising a support frame and a meter clamp provided on the support frame, and used for mounting a measuring meter;

[0008] The rotating mechanism is connected to the rotating disk to drive the rotating disk to rotate along its circumferential direction.

[0009] Furthermore, the rotating mechanism includes a load-bearing block, a rotating shaft rotatably arranged on the load-bearing block, a sleeve sleeved and rotated on the rotating shaft, and a connecting shaft with one end fixedly connected to the end of the sleeve away from the load-bearing block and the other end fixedly connected to the rotating disk.

[0010] Furthermore, two groups of bearings are provided between the sleeve and the rotating shaft, and a bushing sleeved on the rotating shaft is provided between the two groups of bearings.

[0011] Furthermore, a first through hole is provided on the end of the sleeve away from the load-bearing block, and a second through hole is provided on the end of the rotating disk facing the sleeve. A cylindrical pin is installed in the first through hole, and one end of the cylindrical pin extends to the interior of the second through hole. The sleeve is fixedly connected to the rotating disk via the cylindrical pin.

[0012] Furthermore, the support frame includes a fixed block, a slider slidably connected to the fixed block, a support rod vertically arranged on the slider, and a guide key vertically arranged on the support rod, and the guide key is vertically connected to the watch clamp.

[0013] Furthermore, a mounting groove is provided on the fixing block, and the mounting groove extends from one end of the fixing block to the other end along a first direction. A sliding block is provided in the mounting groove and can slide along the extending direction of the mounting groove.

[0014] Furthermore, a mounting hole is provided at the bottom of the mounting groove, a bolt is threadedly connected to the mounting hole, a through waist-shaped hole is provided on the slider, and the bolt passes through the waist-shaped hole and is threadedly connected to the mounting hole to fix the slider in the mounting groove.

[0015] Furthermore, one end of the sliding block is connected to a handle.

[0016] Furthermore, a slot is provided at one end of the watch clip away from the guide key along its axial direction, a threaded hole is provided in the middle of the slot perpendicular to its axial direction, and a fixing hole is provided on the side wall of the watch clip perpendicular to the slot.

[0017] Furthermore, the crank concentricity detection tool also includes a base plate, and the clamping mechanism and the rotating mechanism are both fixedly arranged on the base plate.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The crank concentricity detection tool of the utility model is used by placing the crank in the groove of the rotating disk, then clamping the measuring gauge by the gauge clamp, and making the detection end of the measuring gauge contact with the shaft rod of the crank, and then rotating the rotating disk by the rotating mechanism to realize the concentricity measurement of the shaft rod. The operation is simple and convenient for testing, and it does not need multiple people to fix it, but can be operated by one person, which effectively improves the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic front view of a crank concentricity detection tooling according to an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of a front cross-section of a crank concentricity detection tool according to an embodiment of the utility model;

[0022] Figure 3This is a schematic diagram of a sleeve in a crank concentricity detection tool according to an embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of a fixed block in a crank concentricity detection tooling according to an embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of a slider in a crank concentricity detection tooling according to an embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of a table clamp in a crank concentricity detection tool according to an embodiment of the utility model;

[0026] Description of Figure Numbers:

[0027] 100, rotating disk; 110, groove; 120, second through hole;

[0028] 200, clamping mechanism; 210, table clamp; 211, clamping groove; 212, opening; 220, fixing block; 221, mounting groove; 222, threaded hole; 230, slider; 231, waist-shaped hole groove; 240, support rod; 250, guide key; 260, handle;

[0029] 300, rotating mechanism; 310, load-bearing block; 320, rotating shaft; 330, sleeve; 331, first through hole; 340, connecting shaft; 350, bearing; 360, bushing; 370, cylindrical pin;

[0030] 400, base plate; 500, crank; 600, measuring table.

[0031] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and beneficial effects of the utility model more clear, the technical solution of the utility model is further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0033] In the description of the utility model, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of the specification are only used to match the contents disclosed in the specification for people familiar with the technology to understand and read, and are not used to limit the limiting conditions that the utility model can be implemented, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effect that the utility model can produce and the purpose that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0034] like Figure 1-2 As shown, an embodiment of the utility model provides a crank concentricity detection tool, including a rotating disk 100, a clamping mechanism 200 and a rotating mechanism 300. Specifically, the rotating disk 100 has a groove 110 for placing the crank 500, and the specific structural shape of the groove 110 can be relatively changed according to the structure of different cranks 500, and no limitation is made in the description of this embodiment; the clamping mechanism 200 includes a support frame and a table clamp 210 provided on the support, which is used to install a measuring meter 600; the rotating mechanism 300 is connected to the rotating disk 100 to drive the rotating disk 100 to rotate along its circumferential direction, wherein the measuring meter 600 is a dial indicator, and its specific structure and use principle are all prior art, which will not be described in detail here.

[0035] The crank concentricity detection tool of the utility model is used to place the crank 500 in the groove 110 of the rotating disk 100, and then clamp the measuring gauge 600 through the gauge clamp 210, and make the detection end of the measuring gauge 600 contact with the shaft of the crank 500, and then rotate the rotating disk 100 through the rotating mechanism 300 to achieve the concentricity measurement of the shaft. It is easy to operate and convenient to test, and does not require multiple people to fix it, and can be operated by one person, which effectively improves the detection efficiency.

[0036] like Figure 2 As shown, in the embodiment of the utility model, the rotating mechanism 300 includes a load-bearing block 310, a rotating shaft 320 rotatably arranged on the load-bearing block 310, a sleeve 330 sleeved and rotated on the rotating shaft 320, and a connecting shaft 340 with one end fixedly connected to the sleeve 330 away from the load-bearing block 310 and the other end fixedly connected to the rotating disk 100; when in use, by rotating the rotating disk 100, the rotating disk 100 rotates under the action of the connecting shaft 340, the sleeve 330 and the load-bearing block 310, and the concentricity of the crank 500 is detected in conjunction with the measurement of the measuring meter 600.

[0037] like Figure 2 As shown, in the embodiment of the utility model, two groups of bearings 350 are provided between the sleeve 330 and the rotating shaft 320, which can enhance the stability and balance of the rotating shaft 320, effectively reduce the displacement of the rotating shaft 320 in the axial direction, and improve the precision and stability. A bushing 360 is provided between the two groups of bearings 350 and is sleeved on the rotating shaft 320. The bushing 360 can reduce the friction between the sleeve 330 and the rotating shaft 320, reduce wear, and extend the service life of the bearing 350 and the rotating shaft 320. At the same time, it can improve the stability and precision of the bearing 350 and reduce jitter and vibration during rotation.

[0038] like Figure 2-3 As shown, in the embodiment of the utility model, a first through hole 331 is provided on the end of the sleeve 330 away from the load-bearing block 310, and a second through hole 120 is provided on the end of the rotating disk 100 facing the sleeve 330. A cylindrical pin 370 is installed in the first through hole 331, and one end of the cylindrical pin 370 extends to the interior of the second through hole 120. The sleeve 330 is fixedly connected to the rotating disk 100 through the cylindrical pin 370 to make the rotating disk 100 rotate more smoothly.

[0039] like Figure 2 As shown, in an embodiment of the utility model, the support frame includes a fixed block 220, a slider 230 slidably connected to the fixed block 220, a support rod 240 vertically arranged on the slider 230, and a guide key 250 vertically arranged on the support rod 240, wherein the guide key 250 is vertically connected to the watch clamp 210, wherein the slider 230, the support rod 240, the guide key 250 and the watch clamp 210 are all connected by threads for easy disassembly and installation, and at the same time, the connection between the slider 230, the support rod 240, the guide key 250 and the watch clamp 210 forms a Z-shaped structure, which has better stability and support.

[0040] like Figure 4 As shown, in the embodiment of the utility model, a mounting groove 221 is provided on the fixing block 220, and the mounting groove 221 extends from one end of the fixing block 220 to the other end along a first direction. A slider 230 is arranged in the mounting groove 221 and the slider 230 can slide along the extension direction of the mounting groove 221. By controlling the slider 230 to move in the mounting groove 221, the watch clip 210 is driven to move closer to or away from the crank 500, thereby improving flexibility and meeting the measurement requirements in different situations.

[0041] like Figure 4As shown, in the embodiment of the utility model, a mounting hole is opened at the bottom of the mounting groove 221, and a bolt is threadedly connected to the mounting hole. The slider 230 is provided with a through waist-shaped hole groove 231, and the bolt passes through the waist-shaped hole groove 231 and is threadedly connected to the mounting hole, so that the slider 230 is fixed in the mounting groove 221. By adjusting the position of the bolt in the waist-shaped hole groove 231, the position of the slider 230 in the mounting groove 221 can be adjusted to meet different needs or work requirements.

[0042] like Figure 5 As shown, in the embodiment of the utility model, one end of the slider 230 is connected to a handle 260, and the handle 260 is threadedly connected to the slider 230, which is convenient for disassembly and installation. The handle 260 is used to facilitate adjustment of the position of the slider 230 in the installation groove 221, thereby improving work efficiency.

[0043] like Figure 6 As shown, in the embodiment of the utility model, a slot 212 is provided along the axial direction of the end of the meter clamp 210 away from the guide key 250, a threaded hole 211 is provided in the middle of the slot 212 perpendicular to the axial direction, and a fixing hole perpendicular to the slot 212 is provided on the side wall of the meter clamp 210, and the fixing hole is used to install bolts. When in use, the rod head of the measuring meter 600 is passed through the threaded hole 211, and then the bolts are tightened to fix the measuring meter 600.

[0044] like Figure 1-2 As shown, in the embodiment of the utility model, the crank concentricity detection tool also includes a base plate 400, and the clamping mechanism 200 and the rotating mechanism 300 are both fixed on the base plate 400. The base plate 400 can ensure the stability of the rotating mechanism 300 and the clamping mechanism 200, thereby improving the measurement precision and accuracy, and facilitating movement.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A crank concentricity detection tool, characterized in that: include: A rotating disk (100), wherein the rotating disk (100) has a groove (110) for placing a crank (500); A clamping mechanism (200), the clamping mechanism (200) comprising a support frame and a meter clamp (210) arranged on the support frame, and used for installing a measuring meter (600); A rotating mechanism (300) is connected to the rotating disk (100) to drive the rotating disk (100) to rotate along its circumferential direction.

2. A crank concentricity detection tool as claimed in claim 1, characterized in that: The rotating mechanism (300) comprises a load-bearing block (310), a rotating shaft (320) rotatably arranged on the load-bearing block (310), a sleeve (330) sleeved and rotatably arranged on the rotating shaft (320), and a connecting shaft (340) having one end fixedly connected to one end of the sleeve (330) away from the load-bearing block (310) and the other end fixedly connected to the rotating disk (100).

3. A crank concentricity detection tool as claimed in claim 2, characterized in that: Two groups of bearings (350) are arranged between the sleeve (330) and the rotating shaft (320), and a bushing (360) sleeved on the rotating shaft (320) is arranged between the two groups of bearings (350).

4. A crank concentricity detection tool as claimed in claim 2, characterized in that: A first through hole (331) is provided on one end of the sleeve (330) away from the load-bearing block (310), and a second through hole (120) is provided on one end of the rotating disk (100) facing the sleeve (330). A cylindrical pin (370) is installed in the first through hole (331), and one end of the cylindrical pin (370) extends to the inside of the second through hole (120). The sleeve (330) is fixedly connected to the rotating disk (100) via the cylindrical pin (370).

5. A crank concentricity detection tool as claimed in claim 1, characterized in that: The support frame comprises a fixed block (220), a slider (230) slidably connected to the fixed block (220), a support rod (240) vertically arranged on the slider (230), and a guide key (250) vertically arranged on the support rod (240); the guide key (250) is vertically connected to the watch clip (210).

6. A crank concentricity detection tool as claimed in claim 5, characterized in that: The fixing block (220) is provided with a mounting groove (221), the mounting groove (221) extending from one end of the fixing block (220) to the other end along a first direction, a sliding block (230) is arranged in the mounting groove (221), and the sliding block (230) can slide along the extension direction of the mounting groove (221).

7. A crank concentricity detection tool as claimed in claim 6, characterized in that: The bottom of the mounting groove (221) is provided with a mounting hole, a bolt is threadedly connected to the mounting hole, a waist-shaped hole groove (231) is provided through the slider (230), and the bolt passes through the waist-shaped hole groove (231) and is threadedly connected to the mounting hole, so that the slider (230) is fixed in the mounting groove (221).

8. A crank concentricity detection tool as claimed in claim 6, characterized in that: One end of the slider (230) is connected to a handle (260).

9. A crank concentricity detection tool as claimed in claim 5, characterized in that: A slot (212) is provided at one end of the watch clip (210) away from the guide key (250) along its axial direction, a threaded hole (211) is provided in the middle of the slot (212) perpendicular to its axial direction, and a fixing hole is provided on the side wall of the watch clip (210) perpendicular to the slot (212).

10. A crank concentricity detection tool as claimed in any one of claims 1 to 9, characterized in that: The crank concentricity detection tool further comprises a base plate (400), and the clamping mechanism (200) and the rotating mechanism (300) are both fixedly arranged on the base plate (400).

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