Bolt torsional strength detection device

Abstract

The utility model relates to the technical field of bolt workpiece detection tools, in particular to a bolt torsional strength detection device, which is characterized in that two racks are symmetrically arranged front and back, the racks are fixedly arranged on the right side wall of a base on the left side, two supporting shafts are symmetrically arranged front and back, and the two supporting shafts are respectively screwed on the racks on the front side and the rear side through bearings; the number of the clamping claws is two, the two clamping claws are fixedly arranged on the supporting shafts on the front side and the rear side respectively, the supporting arms are fixedly arranged on the supporting shafts, and the front supporting arm and the rear supporting arm are symmetrically arranged up and down. By designing clamping and fixing structures with symmetrical front and back brightness and arranging a u Andong driving structure, the rotation directions of front and back transmission structures are opposite, and the transmission structures are provided with variable-speed transmission structures, so that the stress application rates of the front and back clamping structures are adjusted, different curve models for measuring the torque change of a workpiece are realized, and the measurement precision of the workpiece is improved. And the comprehensive coverage of the torsional strength measurement data of the bolt workpiece is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt workpiece detection tooling, in particular to a bolt torsional strength detection device. Background Art

[0002] After the bolt workpiece is designed and formed in production, it is necessary to produce a pattern and conduct various numerical tests on the disassembled product to ensure the correctness of the design scheme. The design scheme can be checked for omissions and improved through physical testing, or random inspections can be carried out during production after the product is finalized to monitor the actual quality of the product in real time. In the prior art, when testing the torsional strength of a bolt rod, a set of equipment is used to fix the two ends of the bolt, and then the movable end of the testing equipment is driven to rotate and read the readings, so as to realize the calculation of the torsional strength data of the bolt according to the different deformation stages of the workpiece to be tested. Usually, this type of torsional force-adding equipment is a single force-adding structure, that is, the movable end of the equipment adopts a constant driving source to add force, and then reads the readings. This makes the data change curve generated during the test single, and the torque strength model measured for the bolt is single, which cannot fully reflect the overall data of the bolt workpiece. Therefore, this type of equipment needs to be improved. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of the existing technology and provide a bolt torsional strength detection device, which is designed with a clamping and fixing structure with symmetrical front and rear brightness, and a U-Anton drive structure, and the rotation directions of the front and rear two groups of transmission structures are opposite, and the transmission structure is provided with a variable speed transmission structure, so as to adjust the force application rate of the front and rear two clamping structures to realize different curve models for measuring the torque change of the workpiece, thereby achieving comprehensive coverage of the torsional strength measurement data of the bolt workpiece.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] It includes a base and a rack, wherein the base is two and is symmetrically arranged left and right, and the rack is two and is symmetrically arranged front and back, and the rack is fixedly arranged on the right side wall of the base on the left side. It also includes:

[0006] Support shafts, there are two support shafts and they are symmetrically arranged front and back, and the two support shafts are respectively rotated on the front and rear frames through bearings;

[0007] Clamping claws, there are two clamping claws, and the two clamping claws are respectively fixed on the support shafts on the front and rear sides;

[0008] The support arm is fixedly arranged on the support shaft, and the front and rear support arms are symmetrically arranged up and down.

[0009] Preferably, a connecting frame is fixedly provided on the frame, the right end of the connecting frame is fixedly provided on the right base, a driving frame is fixedly provided on the support arm, and the driving frame is movably provided inside the connecting frame.

[0010] Preferably, a transmission shaft is rotatably mounted on the connecting frame via a bearing, a driving gear is sleeved and fixed on the transmission shaft, a driving rack is fixedly mounted on the driving frame, and the driving gear is meshed with the driving rack.

[0011] Preferably, a mounting bracket is fixedly provided on the base on the right side, and the end of the transmission shaft away from the connecting bracket is rotated on the mounting bracket through a bearing, a worm gear is fixed on the transmission shaft, and two worms are rotated on the mounting bracket through bearings, and the two worms are respectively engaged with the worm gears on the transmission shafts on the front and rear sides, and transmission is arranged between the two worms.

[0012] Preferably, a fixing frame is provided below the mounting frame, and two reversing shafts are rotated on the fixing frame through bearings. An inner hexagonal sleeve is fixedly provided on the upper end of the reversing shaft, and a hexagonal transmission rod is fixedly provided on the lower end of the worm. The hexagonal transmission rod is movably inserted in the inner hexagonal sleeve, and the two reversing shafts are connected by a speed change gear set.

[0013] Preferably, a lifting guide seat is fixedly provided on the base on the right side, a lifting guide rod is movably inserted into the lifting guide seat, a lifting guide sleeve is fixedly provided on the lifting guide rod, the fixed frame is movably inserted into the lifting guide sleeve, and a support spring is sleeved on the lifting guide rod, wherein the lower end of the support spring is against the lifting guide seat, and the upper end of the support spring is against the lifting guide sleeve.

[0014] Preferably, a plurality of fixing sleeves are fixedly provided on the base on the right side.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] It designs a clamping and fixing structure with symmetrical front and rear brightness, and sets up a U-Anton drive structure. The rotation directions of the front and rear two groups of transmission structures are opposite, and the transmission structure is equipped with a variable speed transmission structure, so as to adjust the force application rate of the front and rear two clamping structures to realize different curve models for measuring the torque change of the workpiece, and achieve comprehensive coverage of the torsional strength measurement data of the bolt workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 yes Figure 1 There is a view of the upper volume.

[0019] Figure 3 yes Figure 1 Lower left side view.

[0020] Figure 4 It is a structural diagram of the base, frame and clamping claws in the utility model.

[0021] Figure 5 It is a structural diagram of the base, transmission shaft and reversing shaft in the utility model.

[0022] Description of reference numerals:

[0023] Base 1, frame 2, support shaft 3, clamping claw 4, support arm 5, connecting frame 6, drive frame 7, transmission shaft 8, drive gear 9, drive rack 10, mounting frame 11, worm 12, worm gear 13, fixing frame 14, reversing shaft 15, hexagonal sleeve 16, hexagonal transmission rod 17, lifting guide seat 18, lifting guide rod 19, lifting guide sleeve 20, support spring 21, fixing sleeve 22. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. The preferred embodiments in the description are only used as examples. All other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

[0025] like Figure 1-5 As shown, this specific implementation adopts the following technical solutions:

[0026] It includes a base 1 and a frame 2, wherein the base 1 is two and is symmetrically arranged left and right, and the frame 2 is two and is symmetrically arranged front and back, and the frame 2 is fixedly arranged on the right side wall of the base 1 on the left side. It also includes:

[0027] The connecting frame 6 is fixedly mounted on the frame 2, and the base 1 on the right side is fixedly mounted on the connecting frame 6;

[0028] Support shafts 3, there are two support shafts 3 and they are symmetrically arranged front and back, and the two support shafts 3 are respectively rotated on the front and rear sides of the frame 2 through bearings;

[0029] Clamping claws 4, there are two clamping claws 4, and the two clamping claws 4 are respectively fixed on the support shaft 3 on the front and rear sides;

[0030] Support arms 5, the support arms 5 are fixedly mounted on the support shaft 3, and the front and rear support arms 5 are symmetrically arranged in a vertical direction;

[0031] A driving frame 7, wherein the driving frame 7 is fixedly mounted on the supporting arm 5 and movably inserted into the connecting frame 6;

[0032] Transmission shaft 8, there are two transmission shafts 8 and they are respectively rotated on the connecting frame 6 on the front and rear sides through bearings;

[0033] A driving gear 9 is sleeved and fixed on the transmission shaft 8;

[0034] A driving rack 10, wherein the driving rack 10 is fixedly mounted on the driving frame 7, and the driving gear 9 is meshed with the driving rack 10;

[0035] The mounting frame 11 is fixedly mounted on the base 1 on the right side, and the end of the transmission shaft 8 away from the connecting frame 6 is rotated on the mounting frame 11 through a bearing;

[0036] A worm 12, wherein the worm 12 is rotatably mounted on the mounting frame 11 via a bearing;

[0037] The worm wheel 13 is sleeved and fixed on the transmission shaft 8, and the worm 12 is meshed with the worm wheel 13;

[0038] A lifting guide seat 18, wherein the lifting guide seat 18 is fixedly arranged on the base 1 on the right side;

[0039] A lifting guide rod 19, wherein the lifting guide rod 19 is movably inserted into the lifting guide seat 18;

[0040] A lifting guide sleeve 20, wherein the lifting guide sleeve 20 is fixedly disposed on the upper end of the lifting guide rod 19;

[0041] A fixing frame 14, wherein the fixing frame 14 is movably inserted into the lifting guide sleeve 20;

[0042] The reversing shafts 15 are a set of two reversing shafts 15, which are rotatably mounted on the fixed frame 14 via bearings, and the two reversing shafts 15 are connected to each other via a speed change gear set;

[0043] An inner hexagonal sleeve 16, wherein the inner hexagonal sleeve 16 is fixedly disposed on the ground end of the reversing shaft 15;

[0044] A hexagonal transmission rod 17 is fixedly provided at the lower end of the worm 12 and is movably inserted into the hexagonal sleeve 16;

[0045] A support spring 21 is sleeved on the lifting guide rod 19, and the lower end of the support spring 21 abuts against the lifting guide seat 18, and the upper end of the lifting spring abuts against the lifting guide sleeve 20;

[0046] The fixing sleeve 22 is a plurality of fixing sleeves 22, and the fixing sleeve 22 is fixedly set on the base 1 on the right side. The device includes a plurality of transmission shafts 8 with different transmission ratios and a fixing seat for installing the transmission shaft 8. Therefore, one group of the fixing seats is inserted into the lifting guide sleeve 20, and the remaining idle fixing frames 14 are inserted into the fixing sleeve 22 for standby use.

[0047] When using this device, the bolt workpiece that needs to be measured for torque is clamped and fixed by the clamping claws 4, and the clamping claws 4 on the front and rear sides respectively clamp the front and rear ends of the fixed bolt, and then the front worm 12 is rotated by the wrench tool with a measuring unit, so that the front worm 12 is transmitted through the hexagonal transmission rod 17 thereon and the hexagonal sleeve 16 on the front reversing shaft 15 to drive the front reversing shaft 15 to rotate, so that the reversing shafts 15 on the front and rear sides are driven by the speed change gear set to drive the rear reversing shaft 15 to rotate through the front reversing shaft 15, so that the rear reversing shaft 15 drives the rear worm 12 to rotate, and the rotation directions of the worms 12 on the front and rear sides are opposite, the worm 12 drives the worm gear 13 to rotate, so that the worm gear 13 drives the transmission shaft 8 to rotate, and the worm gear 13 drives the driving gear 9 to rotate, and the driving gear 9 drives the driving rack 10 to move, thereby driving the rack 10 to push the driving frame 7, and the driving frame 7 pushes the support arm 5 to support the shaft 3 rotates, thereby driving the support shaft 3 to rotate, thereby driving the clamping claw 4 to rotate, and the rotation directions of the clamping claws 4 on the front and rear sides are opposite, thereby realizing that the clamping claws 4 on the front and rear sides drive to tighten the bolts to be measured torque, and realizing that by reading the reading on the wrench tool with a measuring unit, the torque of the bolt can be read and converted; when the front worm 12 is rotated at a constant rate, the reversing shafts 15 on the front and rear sides are driven by the speed change gear set to drive the rear worm 12 to rotate, and then the reversing shafts 15 of the speed change gear set with different speed ratios are selected to realize different speed transmission ratios of the two worms 12 behind the wall, so that when the worm 12 drives the clamping claw 4 to rotate after transmission, the force application rate of the front and rear clamping claws 4 to twist the screw is adjusted, that is, when the speed ratio between the front and rear reversing shafts 15 increases, the force application rate of the clamping claw 4 decreases, and conversely, when the speed ratio between the front and rear transmission shafts 8 decreases, the force application rate of the clamping claw 4 increases.

[0048] Compared with the prior art, the beneficial effects of the present invention are:

[0049] 1. The device is provided with two front and rear support shafts 3 and symmetrical clamping claws 4, so as to clamp and fix the bolt whose torque needs to be measured. By rotating the front and rear clamping claws 4 in different directions, the front and rear clamping claws 4 can twist the bolt, thereby achieving the torque measurement of the bolt;

[0050] 2. A driving frame 7 is set on the support shaft 3 through the support arm 5, and two front and rear transmission shafts 8 are set on the base 1 through the mounting frame 11. The front and rear transmission shafts 8 are transmitted through the reversing shaft 15 to realize the reversing transmission rotation of the front and rear transmission shafts 8. The support frame is driven to rotate by the driving gear 9 and the driving rack 10, thereby realizing the rotation of the support shaft 3 through the support arm 5;

[0051] 3. The front and rear reversing shafts 15 are driven by a speed-changing gear set, thereby realizing the possibility of replacing the reversing shafts 15 with different speed ratios, realizing different transmission ratios of the front and rear worm gears 12, and thus realizing the possibility of adjusting different force-adding rates between the front and rear clamping claws 4 when rotating the front worm gear 12 at a constant force-adding rate.

[0052] For those skilled in the art, they can modify the technical solutions described in the aforementioned embodiments and make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A bolt torsional strength testing device, comprising a base (1) and a frame (2), wherein the base (1) is provided in two pieces and is arranged symmetrically left and right, the frame (2) is provided in two pieces and is arranged symmetrically front and back, and the frame (2) is fixedly provided on the right side wall of the base (1) on the left side; characterized in that, It also contains: Support shafts (3), wherein the support shafts (3) are two and are symmetrically arranged front and back, and the two support shafts (3) are respectively rotated on the front and back frames (2) through bearings; Clamping claws (4), there are two clamping claws (4), and the two clamping claws (4) are respectively fixedly arranged on the support shafts (3) at the front and rear sides; The support arm (5) is fixedly arranged on the support shaft (3), and the front and rear support arms (5) are symmetrically arranged in an upper and lower direction.

2. A bolt torsional strength testing device according to claim 1, characterized in that: A connecting frame (6) is fixedly provided on the frame (2), the right end of the connecting frame (6) is fixedly provided on the base (1) on the right side, a driving frame (7) is fixedly provided on the support arm (5), and the driving frame (7) is movably provided inside the connecting frame (6).

3. A bolt torsional strength testing device according to claim 2, characterized in that: A transmission shaft (8) is rotatably mounted on the connecting frame (6) via a bearing, a driving gear (9) is sleeved and fixed on the transmission shaft (8), a driving rack (10) is fixedly mounted on the driving frame (7), and the driving gear (9) is meshed with the driving rack (10).

4. A bolt torsional strength testing device according to claim 3, characterized in that: A mounting frame (11) is fixedly provided on the base (1) on the right side, one end of the transmission shaft (8) away from the connecting frame (6) is rotated on the mounting frame (11) through a bearing, a worm wheel (13) is fixedly provided on the transmission shaft (8), two worms (12) are rotated on the mounting frame (11) through bearings, and the two worms (12) are respectively engaged with the worm wheels (13) on the transmission shaft (8) on the front and rear sides, and transmission is provided between the two worms (12).

5. A bolt torsional strength testing device according to claim 4, characterized in that: A fixing frame (14) is provided below the mounting frame (11), two reversing shafts (15) are rotatably provided on the fixing frame (14) through bearings, an inner hexagonal sleeve (16) is fixedly provided at the upper end of the reversing shaft (15), a hexagonal transmission rod (17) is fixedly provided at the lower end of the worm (12), the hexagonal transmission rod (17) is movably inserted into the inner hexagonal sleeve (16), and the two reversing shafts (15) are connected by a transmission gear set.

6. A bolt torsional strength testing device according to claim 5, characterized in that: A lifting guide seat (18) is fixedly provided on the base (1) on the right side, a lifting guide rod (19) is movably inserted into the lifting guide seat (18), a lifting guide sleeve (20) is fixedly provided on the lifting guide rod (19), a fixed frame (14) is movably inserted into the lifting guide sleeve (20), and a support spring (21) is sleeved on the lifting guide rod (19), wherein the lower end of the support spring (21) is abutted against the lifting guide seat (18), and the upper end of the support spring (21) is abutted against the lifting guide sleeve (20).

7. A bolt torsional strength testing device according to claim 6, characterized in that: A plurality of fixing sleeves (22) are fixedly arranged on the right side base (1).

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