Crankshaft span measuring tool

Abstract

A crankshaft span measuring tool relates to the technical field of crankshaft detection equipment and comprises a bottom plate, a plurality of supports arranged in parallel are arranged on the bottom plate, and a plurality of detection positions perpendicular to the supports are arranged among the supports at intervals; the two detection assemblies are arranged on the two sides of the multiple supports respectively, and each detection assembly comprises a plurality of detection pieces arranged between every two adjacent supports in a one-to-one correspondence mode; each detection piece comprises a connecting section which is in sliding connection with the bottom plate in the direction perpendicular to the multiple supports, a rotating section which is in rotating connection with the connecting section in the direction parallel to the multiple supports and a telescopic section which is arranged between the inner side and the outer side of the rotating section in a sliding mode, and a limiting piece is arranged between the telescopic section and the rotating section and used for fixing the length of the telescopic section; crankshafts on different detection positions are detected by adjusting the length of the telescopic section.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft detection equipment, in particular to a crankshaft span measuring tool. Background Art

[0002] After the crankshaft is processed, it is necessary to detect the spacing between adjacent cranks and other related dimension chains. At this time, special measuring tooling is needed.

[0003] In the Chinese utility model patent with the authorization announcement number CN219977296U, a span measurement assembly structure is provided, which completes the positioning and assembly of the workpiece to be measured and the measuring instrument through the V-block and the table stand frame arranged on the bottom plate seat, and in the actual measurement process, the sliding seats distributed in parallel on the left and right are used as the movable measurement basis of the table stand frame, and the distance measurement node of the measuring instrument is fixed by the positioned table stand tube and the clamping table column, and the fixed support requirements of table stands of different specifications are met through the relative hinged movement of the turning crown head and the table stand tube, thereby improving the applicability of the assembly structure, and changing the span of the table stand seat on the left and right slides by the movement of the table stand seat on the slide, thereby meeting the measurement requirements of the span measuring instrument, and improving the practicality of the assembly structure; however, when the above patent is used, only a single crankshaft can be measured at a time, and the detection efficiency is low. If the detection efficiency is to be improved, it is necessary to use multiple above assembly structures for simultaneous detection, which increases the detection cost and is very inconvenient to operate. Utility Model Content

[0004] In view of the deficiencies existing in the prior art, the utility model provides a crankshaft span measuring tool, which solves the problem of low detection efficiency of the detection tool existing in the prior art.

[0005] A crankshaft span measuring tool, comprising:

[0006] A bottom plate, on which a plurality of brackets are arranged in parallel, and between the brackets a plurality of detection positions are arranged perpendicularly to the brackets and spaced apart; and

[0007] Two detection components are respectively arranged on both sides of a number of brackets, each detection component includes a number of detection parts arranged one by one between a number of adjacent brackets, each detection part includes a connecting section slidably connected to the bottom plate in a direction perpendicular to the number of brackets, a rotating section rotatably connected to the connecting section in a direction parallel to the number of brackets, and a telescopic section slidably arranged between the inner and outer sides of the rotating section, and a limit piece is provided between the telescopic section and the rotating section to fix the length of the telescopic section.

[0008] Compared with the prior art, the utility model has the following beneficial effects: when in use, a plurality of crankshafts are placed one by one at a plurality of detection positions, and then a calibrated dial indicator is installed on each telescopic section respectively, and finally the rotating section is rotated so that the measuring head of the dial indicator is against the crank side wall of the crankshaft at one of the detection positions, and the distance between the crankshaft cranks is detected by measuring a plurality of dial indicators; when it is necessary to measure the crankshafts at the remaining detection positions, the limiter is opened, and the length of the telescopic section is adjusted. After the adjustment is in place, the length of the telescopic section is fixed by the limiter, and the above-mentioned operation is repeated multiple times, so that the dial indicator on the telescopic section of each detection member can measure the distance between the crankshaft cranks at different detection positions; the operation is simple and convenient, and a plurality of crankshafts can be detected quickly, thereby improving the detection efficiency and reducing the detection cost.

[0009] Preferably, the telescopic section includes a clamping column which is slidably inserted between the inner and outer sides of the rotating section, a clamping piece is provided on one end of the clamping column located outside the rotating section, a plurality of annular grooves are provided on one end of the clamping column located inside the rotating section at intervals along its axial direction, the plurality of annular grooves are arranged along the circumference of the clamping column and the number of the annular grooves is the same as the number of detection positions, the distance between two adjacent annular grooves is the same as the distance between two adjacent detection positions, and the limiting piece is used to engage with the plurality of annular grooves.

[0010] Preferably, the rotating section includes a meter frame tube whose one end is rotatably connected to the connecting section, the meter clamping column is coaxially slidably inserted between the inner and outer sides of the other end of the meter frame tube, and the limiter is installed between the meter frame tube and the meter clamping column.

[0011] Preferably, the limiter comprises a fixing box fixedly mounted on the side wall of the meter frame tube, the limiter comprises a pull rod slidably inserted between the fixing box, the meter frame tube and the meter column clamping, a baffle is fixedly sleeved on the pull rod, the baffle is located in the fixing box, the baffle is elastically connected to the inner wall of the fixing box away from the meter frame tube by a spring, a limit block is fixedly mounted on one end of the pull rod facing the meter column clamping, and the limit block is used to engage with a plurality of annular grooves.

[0012] Preferably, a plurality of positioning grooves are provided on the bottom of each annular groove at intervals along its circumferential direction, and a positioning rod is fixedly mounted on the side wall of the limit block away from the pull rod, and the positioning rod is used for plugging and cooperating with the plurality of positioning grooves.

[0013] Preferably, two slides are fixedly installed in parallel on the base plate, the two slides are respectively located on both sides of the plurality of brackets and are arranged perpendicular to the plurality of brackets, the connecting section includes a meter stand seat having one end slidably connected to the corresponding slide, and one end of the meter stand tube is rotatably connected to an end of the meter stand seat away from the base plate.

[0014] Preferably, a slot is provided at one end of the clamping column located outside the meter frame tube along its axial direction, a mounting hole is provided in the middle of the slot perpendicular to its axial direction, a stress hole is provided on the side wall of the slot near the bottom of the slot perpendicular to its axial direction, two stress grooves are provided on the side wall of the slot facing each other along its axial direction, the two stress grooves are connected with the mounting hole and the stress hole, and the clamping part includes a locking bolt freely passing through and installed at the notch of the slot, the locking bolt is arranged perpendicular to the two stress grooves and is threadedly connected to the nut.

[0015] Preferably, the upper portion of each bracket is provided with a plurality of V-shaped grooves arranged at intervals along the length direction thereof, and each detection position is assembled by the corresponding V-shaped grooves on a plurality of brackets.

[0016] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic structural diagram of an embodiment.

[0018] Figure 2 for Figure 1 A partial enlarged view of part Ⅰ.

[0019] Figure 3 for Figure 1 Front view of the center column.

[0020] Figure 4 for Figure 1 Cross-sectional view of the center frame tube and the limiter.

[0021] Figure 5 for Figure 1 Schematic diagram of the structure of the middle limiter.

[0022] The numbers in the figure are: 1, base plate; 2, bracket; 21, V-shaped groove; 3, slide seat; 4, meter frame seat; 5, meter frame tube; 6, meter clamping column; 61, slot; 62, stress groove; 63, mounting hole; 64, stress hole; 65, locking bolt; 66, annular groove; 67, positioning groove; 7, fixing box; 71, pull rod; 72, baffle; 73, spring; 74, limit block; 75, positioning rod. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods:

[0024] like Figure 1-2As shown, an embodiment of the utility model provides a crankshaft span measuring tool, comprising: a base plate 1, on which a plurality of brackets 2 are arranged in parallel, a plurality of detection positions arranged perpendicular to the brackets 2 and spaced apart are arranged between the brackets 2; and two detection components, which are respectively arranged on both sides of the plurality of brackets 2, each detection component comprising a plurality of detection members arranged one-to-one between a plurality of adjacent brackets 2, each detection member comprising a connecting section slidably connected to the base plate 1 along a direction perpendicular to the plurality of brackets 2, a rotating section rotatably connected to the connecting section along a direction parallel to the plurality of brackets 2, and a telescopic section slidably arranged between the inner and outer sides of the rotating section, a limit member is provided between the telescopic section and the rotating section for fixing the length of the telescopic section.

[0025] Place a number of crankshafts correspondingly at a number of detection positions, then install a calibrated dial indicator on each telescopic section, and finally rotate the rotating section so that the measuring head of the dial indicator abuts against the crank side wall of the crankshaft at one of the detection positions, and detect the distance between the cranks of the crankshafts by measuring a number of dial indicators; when it is necessary to measure the crankshafts at the remaining detection positions, open the limiter and adjust the length of the telescopic section. After adjusting to the right position, fix the length of the telescopic section by the limiter, and operate in the above manner, so that the dial indicator on the telescopic section of each detection member can measure the distance between the cranks of the crankshafts at different detection positions; the operation is simple and convenient, and multiple crankshafts can be detected quickly, thereby improving the detection efficiency and reducing the detection cost.

[0026] The specific structure of the crankshaft is prior art and will not be described in detail here.

[0027] like Figure 1-5 As shown, according to another embodiment of the utility model, the crankshaft span measuring tool is further optimized with respect to the telescopic section, the rotating section and the connecting section included therein, the telescopic section includes a clamping column 6 which is slidably inserted between the inner and outer sides of the rotating section, and a clamping member is provided on one end of the clamping column 6 located outside the rotating section, and a plurality of annular grooves 66 are provided on one end of the clamping column 6 located inside the rotating section along the axial direction thereof, the plurality of annular grooves 66 are arranged along the circumference of the clamping column 6 and the number of the annular grooves 66 is the same as the number of the detection positions, and the distance between two adjacent annular grooves 66 is the same as the distance between two adjacent detection positions, and the limiting member is used to engage with the plurality of annular grooves 66; by engaging the limiting member with different annular grooves 66, the states of the clamping column 6 with different lengths can be fixed, so as to ensure that the crankshaft at different detection positions can be detected, and the length of the clamping column 6 will not change during the detection process, thereby ensuring the accuracy of the measurement result.

[0028] The rotating section includes a meter frame tube 5, one end of which is rotatably connected to the connecting section, the clamping meter column 6 is coaxially slidably penetrated between the inner and outer sides of the other end of the meter frame tube 5, and the limiter is installed between the meter frame tube 5 and the clamping meter column 6; the limiter includes a fixed box 7 fixedly installed on the side wall of the meter frame tube 5, the limiter includes a pull rod 71 slidably penetrated between the fixed box 7, the meter frame tube 5 and the clamping meter column 6, a baffle 72 is fixedly sleeved on the pull rod 71, the baffle 72 is located in the fixed box 7, and the baffle 72 is elastically connected to the inner wall of the fixed box 7 away from the meter frame tube 5 by a spring 73, and a limit block 74 is fixedly installed on the end of the pull rod 71 facing the clamping meter column 6, and the limit block 74 is used to engage with a plurality of annular grooves 66; when adjusting the length of the clamping meter column 6 When the degree is reached, the pull rod 71 is pulled to disengage from the annular groove 66, and the spring 73 is compressed by the baffle 72, and then the meter column 6 is slid so that the other annular groove 66 slides to the pull rod 71, and then the pull rod 71 is released, and the pull rod 71 is pushed into the annular groove 66 by the elastic action of the spring 73; and preferably, a plurality of positioning grooves 67 are provided on the bottom of each of the annular grooves 66 along its circumferential interval, and a positioning rod 75 is fixedly installed on the side wall of the limit block 74 away from the pull rod 71, and the positioning rod 75 is used to be plugged into and cooperate with the plurality of positioning grooves 67; by the cooperation of the positioning rod 75 with the positioning groove 67, the meter column 6 can be placed to rotate freely during the measurement process; and the side wall of the limit block 74 facing the meter column 6 is an arc surface, so as to fit with the outer wall of the meter column 6.

[0029] Two slides 3 are fixedly installed in parallel on the base plate 1, and the two slides 3 are respectively located on both sides of the plurality of brackets 2 and are arranged perpendicular to the plurality of brackets 2. The connecting section includes a meter frame seat 4 whose one end is slidably connected to the corresponding slide 3, and one end of the meter frame tube 5 is rotatably connected to the end of the meter frame seat 4 away from the base plate 1; the position of each meter frame seat 4 can be easily adjusted to better measure the distance between the crankshaft cranks.

[0030] like Figure 2-3As shown, according to another embodiment of the utility model, the crankshaft span measuring tool, preferably, the clamping column 6 is provided with a slot 61 along its axial direction at one end outside the meter frame tube 5, and a mounting hole 63 is provided in the middle of the slot 61 perpendicular to its axial direction. A stress hole 64 is provided on the side wall of the slot 61 near the bottom of the slot and perpendicular to its axial direction, and two stress grooves 62 are provided on the side wall of the slot 61 facing each other along its axial direction, and the two stress grooves 62 are connected with the mounting hole 63 and the stress hole 64. The clamping member includes a locking bolt 65 that is freely penetrated and installed at the notch of the slot 61, and the locking bolt 65 is arranged perpendicular to the two stress grooves 62 and is connected to the nut thread; when in use, the measuring head of the dial indicator is passed through the mounting hole 63, and the sleeve of the measuring head is located in the mounting hole 63, and then the locking bolt 65 is tightened to fix the sleeve, wherein the specific structure and use principle of the dial indicator are all prior art and are not described in detail here.

[0031] like Figure 1 As shown, according to another embodiment of the utility model, the crankshaft span measuring tool is preferably provided with a plurality of spaced V-grooves 21 on the upper portion of each bracket 2 along its length direction, and each detection position is assembled by corresponding V-grooves 21 on a plurality of brackets 2; when measuring, the crankshaft is placed between the corresponding V-grooves 21 of the plurality of brackets 2.

[0032] The use principle of the utility model is as follows: when the utility model is used, a plurality of crankshafts are placed one by one between the V-grooves 21 of a plurality of brackets 2, and then the calibrated dial gauge is mounted on the clamping column 6 in the above-mentioned manner, and then the meter frame tube 5 is rotated so that the measuring head of the dial gauge abuts against the side wall of the crank on the crankshaft, and then the distance between adjacent cranks is obtained by measuring the plurality of dial gauges; when it is necessary to inspect the crankshafts on the remaining V-grooves 21 of the plurality of brackets 2, the pull rod 71 is pulled out of the annular groove 66, and the positioning rod 75 is disengaged from the positioning groove 67 At the same time, the spring 73 is compressed by the baffle 72, and then the clamping column 6 is slid so that the other annular groove 66 slides to the pull rod 71, and then the clamping column 6 is rotated to adjust the measuring angle of the dial indicator measuring head, and then the pull rod 71 is released, and the elastic action of the spring 73 pushes the pull rod 71 to be stuck in the annular groove 66, and at the same time the positioning rod 75 is inserted into the positioning groove 67, so as to fix the position of the clamping column 6 and the measuring angle of the dial indicator measuring head, and then the distance between the crankshaft turns is measured, and the above method is repeated many times to complete the detection of several crankshafts.

[0033] 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 crankshaft span measuring tool, characterized in that: include: A bottom plate (1) is provided with a plurality of brackets (2) arranged in parallel, and a plurality of detection positions are provided between the brackets (2) and are arranged at intervals perpendicular to the brackets (2); and Two detection assemblies are respectively arranged on both sides of a plurality of brackets (2), each detection assembly comprises a plurality of detection members arranged one by one between a plurality of adjacent brackets (2), each detection member comprises a connecting section slidably connected to the bottom plate (1) in a direction perpendicular to the plurality of brackets (2), a rotating section rotatably connected to the connecting section in a direction parallel to the plurality of brackets (2), and a telescopic section slidably arranged between the inner and outer sides of the rotating section, a limiting member is provided between the telescopic section and the rotating section for fixing the length of the telescopic section.

2. A crankshaft span measuring tool according to claim 1, characterized in that: The telescopic section comprises a meter clamping column (6) which is slidably arranged between the inner and outer sides of the rotating section. A clamping piece is arranged on one end of the meter clamping column (6) located outside the rotating section. A plurality of annular grooves (66) are arranged at intervals along the axial direction of the meter clamping column (6) on one end of the meter clamping column (6) located inside the rotating section. The plurality of annular grooves (66) are arranged along the circumference of the meter clamping column (6) and the number of the annular grooves (66) is the same as the number of detection positions. The distance between two adjacent annular grooves (66) is the same as the distance between two adjacent detection positions. The limiting piece is used to engage with the plurality of annular grooves (66).

3. A crankshaft span measuring tool according to claim 2, characterized in that: The rotating section comprises a meter frame tube (5) whose one end is rotatably connected to the connecting section, the meter clamping column (6) is coaxially slidably arranged between the inner and outer sides of the other end of the meter frame tube (5), and the position limiting member is installed between the meter frame tube (5) and the meter clamping column (6).

4. A crankshaft span measuring tool according to claim 3, characterized in that: The limiting member comprises a fixing box (7) fixedly mounted on the side wall of the meter frame tube (5), the limiting member comprises a pull rod (71) slidably penetrated between the fixing box (7), the meter frame tube (5) and the meter clamping column (6), a baffle (72) fixedly sleeved on the pull rod (71), the baffle (72) being located in the fixing box (7), the baffle (72) being elastically connected to the inner wall of the fixing box (7) away from the meter frame tube (5) via a spring (73), a limiting block (74) being fixedly mounted on one end of the pull rod (71) facing the meter clamping column (6), the limiting block (74) being used for engaging with a plurality of annular grooves (66).

5. A crankshaft span measuring tool according to claim 4, characterized in that: A plurality of positioning grooves (67) are provided at intervals along the circumference of the groove bottom of each annular groove (66), and a positioning rod (75) is fixedly mounted on the side wall of the limit block (74) away from the pull rod (71), and the positioning rod (75) is used for plugging and matching with the plurality of positioning grooves (67).

6. A crankshaft span measuring tool according to claim 3, characterized in that: Two slide seats (3) are fixedly mounted in parallel on the bottom plate (1), the two slide seats (3) are respectively located on both sides of the plurality of brackets (2) and are arranged perpendicular to the plurality of brackets (2), the connecting section comprises a meter stand seat (4) one end of which is slidably connected to the corresponding slide seat (3), and one end of the meter stand tube (5) is rotatably connected to an end of the meter stand seat (4) away from the bottom plate (1).

7. The crankshaft span measuring tool according to claim 3, characterized in that: The end of the clamping column (6) located outside the meter frame tube (5) is provided with a slot (61) along its axial direction, a mounting hole (63) is provided in the middle of the slot (61) perpendicular to its axial direction, a stress hole (64) is provided on the side wall of the slot (61) near the bottom of the slot perpendicular to its axial direction, two stress grooves (62) are provided on the side wall of the slot (61) facing each other along its axial direction, the two stress grooves (62) are connected to the mounting hole (63) and the stress hole (64), and the clamping member comprises a locking bolt (65) freely penetrating and installed at the notch of the slot (61), the locking bolt (65) is arranged perpendicular to the two stress grooves (62) and is connected to the nut thread.

8. The crankshaft span measuring tool according to claim 1, characterized in that: The upper part of each bracket (2) is provided with a plurality of V-shaped grooves (21) arranged at intervals along the length direction thereof, and each detection position is assembled by assembling the corresponding V-shaped grooves (21) on a plurality of brackets (2).

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