A low-cost bolt tension detection device for power transmission

Abstract

The invention discloses a low-cost bolt tension detection device for power transmission, comprising a base, a support frame, an upper fixing mechanism, a lower fixing mechanism, a tension sensor and a pulling mechanism, wherein the base is provided with a support frame and a lower fixing mechanism, the support frame is provided with a pulling mechanism, a tension sensor is provided at a working end of the pulling mechanism, an upper fixing mechanism is provided at the lower end of the tension sensor, the upper fixing mechanism and the lower fixing mechanism fix the bolt to be detected, and the pulling mechanism is a pulling mechanism with a pulley block, which can reduce the use cost, improve the work efficiency and improve the applicability compared with the prior art.

Description

[Technical field]

[0001] The invention relates to the technical field of a fastener tension detection device, in particular to the technical field of a low-cost bolt tension detection device for power transmission. [Background technology]

[0002] Bolt: A mechanical part, a cylindrical threaded fastener equipped with a nut. It is a type of fastener consisting of a head and a screw (a cylinder with external threads). It needs to be matched with a nut and is used to fasten two parts with through holes. This type of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.

[0003] At present, the strength grade test is generally carried out by screwing the bolts and nuts together and then clamping the bolts and nuts on a tensile testing machine. The tensile testing machine is directly driven by a hydraulic cylinder, which requires a larger working force of the hydraulic cylinder system. It is necessary to purchase a larger power hydraulic cylinder system, which increases the cost of use. [Summary of the invention]

[0004] The purpose of the present invention is to solve the problems in the prior art and to provide a low-cost bolt tension detection device for power transmission.

[0005] To achieve the above-mentioned purpose, the present invention proposes a low-cost bolt tension detection device for power transmission, comprising a base, a support frame, an upper fixing mechanism, a lower fixing mechanism, a tension sensor and a pulling mechanism, wherein the base is provided with a support frame and a lower fixing mechanism, the support frame is provided with a pulling mechanism, a tension sensor is provided at the working end of the pulling mechanism, an upper fixing mechanism is provided at the lower end of the tension sensor, the upper fixing mechanism and the lower fixing mechanism fix the bolt to be detected, and the pulling mechanism is a pulling mechanism with a pulley block.

[0006] The top end of the sliding body is fixedly connected to the upper and lower surfaces of the frame body, and the bottom end of the sliding body is fixedly connected to the lower surface of the frame body by the screw threading device.

[0007] Preferably, the upper fixing mechanism comprises a mounting seat, a turntable and a plurality of T-slots, the mounting seat is provided with a rotatable turntable, the circumference of the turntable is provided with evenly distributed T-slots, and each T-slot is suitable for bolts of a certain specification.

[0008] Preferably, the support frame is a gantry.

[0009] Preferably, the tensioning mechanism includes a cylinder, a cone, an upper seat and a lower seat, the upper end of the connecting body and the lower end of the lower connecting seat are respectively provided with a lower seat and an upper seat, the lower end of the lower seat and the upper end of the upper seat are both provided with grooves matching the cone, and a cone is provided on the piston rod of the cylinder.

[0010] Preferably, the front side of the frame body is provided with a spring latch, and the base is provided with a plurality of slots matching with the latch of the spring latch, and all the slots are arranged in a row.

[0011] Preferably, the pulling mechanism includes a movable pulley group, a fixed pulley group, a steel wire rope, a connecting piece, a hydraulic cylinder and a guide wheel, the fixed pulley group, the guide wheel and the hydraulic cylinder are sequentially arranged on the crossbeam of the support frame, the movable pulley group is fixedly connected to the tension sensor through the connecting piece, the movable pulley group, the guide wheel and the fixed pulley group are provided with a steel wire rope, and the pulling end of the steel wire rope is fixedly connected to the piston rod of the hydraulic cylinder.

[0012] Preferably, the connecting member includes a support, a sliding shaft, a shock-absorbing spring and a mounting seat. The support is arranged on two columns of the support frame. The sliding shaft is passed through the support and the upper end is fixedly connected to the wheel frame of the movable pulley group. The lower end of the sliding shaft is provided with a mounting seat, and a shock-absorbing spring is provided on the sliding shaft between the mounting seat and the support.

[0013] The beneficial effects of the present invention are as follows: the pulling mechanism of the present invention is a pulling mechanism with a pulley group. The application of the pulley group greatly reduces the power requirement of the hydraulic cylinder, thereby reducing the use cost; by making the sliding body described above correspond one by one to the sliding body described below, the inner ends of the sliding bodies are each provided with a half nut, and the two corresponding half nuts above and below are buckled together to form a nut, and each nut is suitable for a bolt of one specification; a rotatable turntable is provided on the mounting seat, and the circumferential surface of the turntable is provided with evenly distributed T-slots, and each T-slot is suitable for a bolt of one specification, and can be suitable for bolts of multiple specifications, and does not require the bolts and nuts to be screwed together, which can improve work efficiency and applicability.

[0014] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0015] Figure 1 It is a structural schematic diagram of a low-cost bolt tension detection device for power transmission of the present invention;

[0016] Figure 2 is a structural schematic diagram of the lower fixing mechanism;

[0017] Figure 3 It is a schematic diagram of T-slots arranged on a turntable.

[0018] In the figure: 1-base, 2-support frame, 3-upper fixing mechanism, 4-lower fixing mechanism, 5-tension sensor, 6-pulling mechanism, 7-slide pair, 31-mounting seat, 32-turntable, 33-T-slot, 41-frame body, 42-sliding body, 43-upper connecting seat, 44-lower connecting seat, 45-half nut, 46-tensioning mechanism, 47-connecting slide rod, 48-connecting body, 49-tension spring, 410-slot, 411-spring latch, 461-cylinder, 462-conical body, 463-upper seat body, 464-lower seat body, 465-groove, 61-movable pulley block, 62-fixed pulley block, 63-wire rope, 64-connecting piece, 65-hydraulic cylinder, 66-guide wheel, 641-support, 642-sliding shaft, 643-shock-absorbing spring, 644-mounting seat. [Specific implementation method]

[0019] See also Figure 1 , Figure 2 and Figure 3The present invention discloses a low-cost bolt tension detection device for power transmission, comprising a base 1, a support frame 2, an upper fixing mechanism 3, a lower fixing mechanism 4, a tension sensor 5 and a pulling mechanism 6. The base 1 is provided with a support frame 2 and a lower fixing mechanism 4, the support frame 2 is provided with a pulling mechanism 6, the working end of the pulling mechanism 6 is provided with a tension sensor 5, the lower end of the tension sensor 5 is provided with an upper fixing mechanism 3, the upper fixing mechanism 3 and the lower fixing mechanism 4 fix the bolt to be detected, the pulling mechanism 6 is a pulling mechanism with a pulley block, the lower fixing mechanism 4 comprises a frame body 41, a plurality of sliding bodies 42, an upper connecting seat 43, a lower connecting seat 44, a plurality of half nuts 45, a tensioning mechanism 46, a plurality of connecting slide rods 47 and a connecting body 4 8. The frame body 41 is slidably arranged on the base 1. The upper and lower bodies of the frame body 41 are both provided with slidable sliding bodies 42. The sliding bodies 42 described above correspond to the sliding bodies 42 described below one by one. The inner ends of the sliding bodies 42 are both provided with half nuts 45. The two corresponding half nuts 45 are buckled together to form a nut. Each nut is suitable for a bolt of a certain specification. The upper end of the sliding body 42 described above is fixedly connected to the upper connecting seat 43, and the lower end of the sliding body 42 described below is fixedly connected to the lower connecting seat 44. The upper connecting seat 43 is provided with a connecting slide rod 47 that is slidably arranged on the upper and lower sides of the frame body 41 and the lower connecting seat 44. The lower end of the connecting slide rod 47 is fixedly connected to the connecting body 48. The frame body 4 The outer side of the lower side body of the support frame 2 is provided with a tensioning mechanism 46 for forcing the connecting body 48 and the lower connecting seat 44 to move in the opposite direction, and a tension spring 49 is provided between the connecting body 48 and the lower connecting seat 44. The upper fixing mechanism 3 includes a mounting seat 31, a turntable 32 and a plurality of T-slots 33. The mounting seat 31 is provided with a rotatable turntable 32, and the circumference of the turntable 32 is provided with evenly distributed T-slots 33, and each T-slot 33 is suitable for a bolt of a specification. The support frame 2 is a gantry frame, and the tensioning mechanism 46 includes a cylinder 461, a cone 462, an upper seat body 463 and a lower seat body 464. The upper end of the connecting body 48 and the lower end of the lower connecting seat 44 are respectively provided with a lower seat body 464 and an upper seat body 463, and the lower end of the lower seat body 464 and the upper seat body 463 are respectively provided. 3 are provided with a groove 465 that matches with the cone 462, the piston rod of the cylinder 461 is provided with a cone 462, the front body of the frame body 41 is provided with a spring latch 411, and the base 1 is provided with a plurality of slots 410 that match with the latch of the spring latch 411, and all the slots 410 are arranged in a row, and the pulling mechanism 6 includes a movable pulley group 61, a fixed pulley group 62, a wire rope 63, a connecting piece 64, a hydraulic cylinder 65 and a guide wheel 66, and the fixed pulley group 62, the guide wheel 66 and the hydraulic cylinder 65 are sequentially arranged on the crossbeam of the support frame 2, the movable pulley group 61 is fixedly connected to the tension sensor 5 through the connecting piece 64, and the movable pulley group 61, the guide wheel 66 and the fixed pulley group 62 are provided with a wire rope 63,The pulling end of the steel wire rope 63 is fixedly connected to the piston rod of the hydraulic cylinder 65. The connecting member 64 includes a support 641, a sliding shaft 642, a shock absorbing spring 643 and a mounting seat 644. The support 641 is arranged on two columns of the support frame 2. The sliding shaft 642 is passed through the support 641 and the upper end is fixedly connected to the wheel frame of the movable pulley group 61. The lower end of the sliding shaft 642 is provided with a mounting seat 644. A shock absorbing spring 643 is provided on the sliding shaft 642 between the mounting seat 644 and the support 641.

[0020] Working process of the present invention:

[0021] The present invention discloses a low-cost bolt tension detection device for power transmission. During operation, the corresponding T-slot 33 and the corresponding two half-nuts 45 are selected according to the specifications of the bolt, the turntable 32 is rotated to make the required T-slot 33 face downward, and then the frame body 41 is pushed forward or backward to make the required two upper and lower corresponding half-nuts 45 enter under the T-slot 33, and then the screw head end of the bolt is inserted into the T-slot 33 and the bolt is pulled downward to make the screw rod enter between the corresponding two half-nuts 45, and then the piston rod of the cylinder 461 is started to extend to drive the cone 462 to enter the groove 465 for movement, and at the same time, the cone 462 forces the upper seat 463 and the lower seat 464 to move. 464 moves in the opposite direction, the upper seat body 463 drives the lower sliding body 42 to move upward through the lower connecting seat 44, the lower sliding body 42 drives the lower half nut 45 to move upward, and the lower seat body 464 drives the upper connecting seat 43 to move downward through the connecting slide rod 47, the upper connecting seat 43 drives the upper half nut 45 to move downward through the upper sliding body 42, thereby locking the screw part of the bolt, and then the piston rod of the hydraulic cylinder is started to retract the wire rope 63 to make the movable pulley group 61 move upward, the movable pulley group 61 drives the mounting seat 644 to move upward through the sliding shaft 642, and the mounting seat 644 drives the upper fixing mechanism 3 to move upward through the tension sensor 5 to detect the strength of the bolt.

[0022] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A low-cost bolt tension detection device for power transmission, characterized in that: The invention comprises a base (1), a support frame (2), an upper fixing mechanism (3), a lower fixing mechanism (4), a tension sensor (5) and a pulling mechanism (6), wherein the base (1) is provided with a support frame (2) and a lower fixing mechanism (4), the support frame (2) is provided with a pulling mechanism (6), a working end of the pulling mechanism (6) is provided with a tension sensor (5), an upper fixing mechanism (3) is provided at the lower end of the tension sensor (5), the upper fixing mechanism (3) and the lower fixing mechanism (4) are used to fix the bolt to be detected, the pulling mechanism (6) is a pulling mechanism with a pulley block, the lower fixing mechanism (4) comprises a frame body (41), a plurality of sliding bodies (42), an upper connecting seat (43), a lower connecting seat (44), a plurality of A half nut (45), a tensioning mechanism (46), a plurality of connecting slide rods (47) and a connecting body (48), wherein the frame body (41) is slidably arranged on the base (1), and a slidable slide body (42) is provided on the upper body and the lower body of the frame body (41), and the slide body (42) described above corresponds to the slide body (42) described below. The inner end of each slide body (42) is provided with a half nut (45), and the two corresponding half nuts (45) above and below are buckled together to form a nut, and each nut is suitable for a bolt of a certain specification, and the upper end of the slide body (42) described above is fixedly connected to the upper connecting seat (43), and the lower end of the slide body (42) described below is fixedly connected to the lower connecting seat (44), and the upper connecting seat A connecting slide rod (47) is provided on the upper and lower sides of the frame body (41) and the lower connecting seat (44) for sliding through. The lower end of the connecting slide rod (47) is fixedly connected to the connecting body (48). The outer side of the lower side of the frame body (41) is provided with a tensioning mechanism (46) for forcing the connecting body (48) and the lower connecting seat (44) to move in opposite directions. A tension spring (49) is provided between the connecting body (48) and the lower connecting seat (44). The tensioning mechanism (46) includes a cylinder (461), a conical body (462), an upper seat body (463) and a lower seat body (464). The upper end of the connecting body (48) and the lower end of the lower connecting seat (44) are provided with a lower seat body (464) and an upper seat body (463) respectively. The lower end of the lower seat body (464) and the upper end of the upper seat body (463) are both provided with a groove (465) matched with the cone (462); the piston rod of the cylinder (461) is provided with a cone (462); the pulling mechanism (6) comprises a movable pulley block (61), a fixed pulley block (62), a steel wire rope (63), a connecting piece (64), a hydraulic cylinder (65) and a guide wheel (66); the fixed pulley block (62), the guide wheel (66) and the hydraulic cylinder (65) are sequentially arranged on the crossbeam of the support frame (2); the movable pulley block (61) is fixedly connected to the tension sensor (5) via the connecting piece (64); the movable pulley block (61), the guide wheel (66) and the fixed pulley block (62) are provided with a steel wire rope (63);The pulling end of the steel wire rope (63) is fixedly connected to the piston rod of the hydraulic cylinder (65).

2. A low-cost bolt tension detection device for power transmission as claimed in claim 1, characterized in that: The upper fixing mechanism (3) comprises a mounting seat (31), a rotating disk (32) and a plurality of T-slots (33). The mounting seat (31) is provided with a rotatable rotating disk (32). The circumferential surface of the rotating disk (32) is provided with evenly distributed T-slots (33). Each T-slot (33) is suitable for bolts of a certain specification.

3. A low-cost bolt tension detection device for power transmission as claimed in claim 1, characterized in that: The support frame (2) is a gantry frame.

4. A low-cost bolt tension detection device for power transmission as claimed in claim 1, characterized in that: The front side of the frame body (41) is provided with a spring latch (411), and the base (1) is provided with a plurality of slots (410) that match the latches of the spring latch (411), and all the slots (410) are arranged in a row.

5. A low-cost bolt tension detection device for power transmission as claimed in claim 1, characterized in that: The connecting member (64) comprises a support (641), a sliding shaft (642), a shock absorbing spring (643) and a mounting seat (644); the support (641) is arranged on two upright posts of the support frame (2); the sliding shaft (642) is passed through the support (641) and the upper end is fixedly connected to the wheel frame of the movable pulley block (61); the lower end of the sliding shaft (642) is provided with a mounting seat (644); and the shock absorbing spring (643) is provided on the sliding shaft (642) between the mounting seat (644) and the support (641).

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