Nut torque testing machine

Abstract

The invention relates to a nut torque testing machine. The nut torque testing machine comprises a test bed, a clamping jaw mechanism, a driving mechanism and a sleeve. The clamping jaw mechanism is installed on the test bed, the clamping jaw mechanism is provided with a locking hole, the locking hole is used for clamping and penetrating an anchor rod, the driving mechanism comprises a linear driving device and a rotary driving device, the linear driving device is installed on the test bed, and the rotary driving device is installed on the linear driving device. The linear driving device is used for driving the rotary driving device to move in the direction close to and away from the clamping jaw mechanism, the output end of the rotary driving device is connected with the sleeve so as to drive the sleeve to rotate, a nut mounting hole is formed in the sleeve, the nut mounting hole is used for containing the pressing piece nut, and the nut mounting hole and the locking hole are opposite and located on the same axis. The nut torque testing machine can simulate the real use environment of an anchor rod drilling machine, and is beneficial to improving the detection precision of a pressing piece type nut and reducing the failure rate of an anchor rod.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and in particular to a nut torque testing machine. Background Art

[0002] The compression nut is widely used in underground anchor support in coal mines. The compression nut is a key component of left-handed threaded steel anchors for mining. The compression nut controls the torque by adding a compression plate at one end of the thickened nut. When used underground, first use the anchor drill to install the drill rod to drill a hole on the top plate, put the tray and the compression nut on the threaded end of the threaded rod anchor, insert the anchor into the hole, and the other end of the anchor supports the anchor. The anchor is stirred by the anchor drill. After the anchor solidifies, start the drill again. After exceeding the nut torque value, push the compression plate out until the nut is tightened to complete the anchor installation.

[0003] During the entire construction process, the torque value of the compression nut is crucial. Too large or too small a torque value will cause the compression nut to fail to open or to open prematurely, resulting in anchor failure. In order to reduce the failure rate of anchors, the torque value of the compression nut is essential. Currently, the torque wrench is used for detection, but the above method has problems such as low detection efficiency, uneven force application, and bias. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a nut torque tester, which can simulate the actual use environment of the anchor drill, which is beneficial to improving the accuracy of the compression nut detection and reducing the anchor failure rate.

[0006] The nut torque testing machine of an embodiment of the present invention includes: a test bench; a clamping mechanism, which is installed on the test bench, and the clamping mechanism has a locking hole, and the locking hole is used to clamp and pass the anchor rod; a driving mechanism, which includes a linear driving device and a rotary driving device, and the linear driving device is installed on the test bench, and the rotary driving device is installed on the linear driving device, and the linear driving device is used to drive the rotary driving device to move in a direction close to and away from the clamping mechanism; a sleeve, the output end of the rotary driving device is connected to the sleeve to drive the sleeve to rotate, and a nut mounting hole is provided in the sleeve, and the nut mounting hole is used to accommodate a pressure plate nut, and the nut mounting hole is opposite to the locking hole and is located on the same axis.

[0007] According to the nut torque testing machine of the embodiment of the present invention, when testing the compression nut, the anchor rod can be clamped and fixed by the clamping claw mechanism, and the compression nut is sleeved on the end of the anchor rod adjacent to the sleeve. The linear drive device drives the rotary drive device and the sleeve to move forward as a whole and approach the anchor rod. The nut mounting hole in the sleeve is aligned with the compression nut, and the rotary drive device and the linear drive device work simultaneously to drive the sleeve to rotate and move forward at the same time, thereby simulating the working condition of a real drilling rig driving the compression nut to be screwed on the anchor rod, thereby improving the accuracy of compression nut detection and reducing the failure rate of the anchor rod.

[0008] In some embodiments, the rotary drive device includes a base plate, a first motor assembly and a belt transmission assembly. The base plate is mounted on the linear drive device. The belt transmission assembly includes a driving wheel, a driven wheel, a transmission belt and a support seat. The first motor assembly is mounted on the base plate and is transmission-connected to the driving wheel. The support seat is mounted on the base plate and its position relative to the base plate is adjustable. The driven wheel is rotatably mounted on the support seat and is coaxially connected to the sleeve. The transmission belt is sleeved on the driving wheel and the driven wheel.

[0009] In some embodiments, the nut torque testing machine also includes a material stripping mechanism, which includes a first cylinder and a material stripping rod. The material stripping rod is coaxially arranged with the nut mounting hole and extends in a direction away from the clamping mechanism. The first cylinder is installed on the base plate and connected to one end of the material stripping rod. The first cylinder is used to drive the other end of the material stripping rod to penetrate into and exit the nut mounting hole.

[0010] In some embodiments, the sleeve and the clamping mechanism are arranged at intervals along a first direction, the driving wheel and the driven wheel are arranged at intervals along a second direction, and the first direction, the second direction and the height direction of the test bench are orthogonal to each other; and / or, the first motor assembly includes a first motor, a reducer and a torque sensor, the first motor assembly is transmission-connected to the reducer, and the reducer is transmission-connected to the driving wheel through the torque sensor; and / or, the clamping mechanism includes a three-jaw chuck and a vertical plate, the vertical plate is mounted on the test bench, the three-jaw chuck is mounted on the vertical plate, the locking hole is provided on the three-jaw chuck, and a through hole is provided on the vertical plate, the through hole is connected to the locking hole and is arranged relatively.

[0011] In some embodiments, the nut torque testing machine also includes a feeding mechanism, which includes a support plate, a storage device and a feeding device, the support plate is installed on the base plate, the storage device and the feeding device are both installed on the support plate, the storage device is used to supply the compression nut to the feeding device, and the feeding device is used to push the compression nut between the sleeve and the anchor rod, and the linear drive device can drive the feeding mechanism to move in a direction approaching and away from the clamping jaw mechanism so as to insert the compression nut pushed by the feeding device onto the anchor rod.

[0012] In some embodiments, the loading device includes a connected second cylinder and a transplanting cylinder, a cache cavity is provided in the transplanting cylinder, the second cylinder is provided on the support plate and can drive the transplanting cylinder to move between a first feeding position and a first discharging position, at the first feeding position, the storage device can feed the stored compression nuts into the cache cavity, and the transplanting cylinder and the sleeve are spaced apart in a direction orthogonal to the axial direction of the sleeve, at the first discharging position, the transplanting cylinder and the sleeve are located on the same axis, so that the compression nut in the cache cavity is aligned with the anchor rod.

[0013] In some embodiments, the material storage device includes a pushing assembly and a material storage box, the material storage box is provided with a material storage cavity, the material storage cavity is used to store compression nuts arranged in sequence along the up and down directions, the lower end of the material storage box and the support plate define a pushing channel, the lower end of the material storage cavity is connected with one end of the pushing channel, and in the first feeding position, the other end of the pushing channel is connected with the cache cavity, and the pushing assembly is used to push the compression nut at the lower end of the material storage cavity to the cache cavity through the pushing channel.

[0014] In some embodiments, the pushing assembly includes a third cylinder and a pushing rod, the third cylinder is mounted on the support plate and connected to one end of the pushing rod, the other end of the pushing rod extends along the length direction of the pushing channel, the third cylinder can drive the pushing rod to move between a second feeding position and a second discharging position, at the second feeding position, the other end of the pushing rod withdraws from the storage cavity, and at the second discharging position, the other end of the pushing rod penetrates into the storage cavity and the pushing channel to push the pressing nut at the lower end of the storage cavity to the cache cavity through the pushing channel.

[0015] In some embodiments, a push plate and at least two push pins are provided at the other end of the push rod, and the two push pins are respectively arranged on the left and right sides of the push plate along the axial extension of the push rod, and the two push pins are flush with one end of the push plate away from the push plate, and a stop portion is provided at the upper end of the push plate. In the second discharging position, the push pin pushes the pressure plate nut at the lower end of the storage chamber to the buffer chamber through the pushing channel, and the stop portion is used to stop the remaining pressure plate nuts in the storage chamber from falling downward; and / or, the feeding mechanism also includes a constraint assembly, and the constraint assembly includes a baffle and an adjusting component, the baffle is installed at the upper end of the pushing channel, the adjusting component is connected to the baffle, and the adjusting component is used to adjust the height of the baffle.

[0016] In some embodiments, the material storage box includes a first half shell, a second half shell and an adjusting gear. The first half shell and the second half shell are spaced apart along a second direction to define a material storage cavity. The second direction, the axial direction of the sleeve and the height direction of the test bench are orthogonal to each other. The lower end of the first half shell has a first rack portion, and the lower end of the second half shell has a second rack portion. The first rack portion and the second rack portion both extend along the second direction and the extension directions of the two are opposite. The first rack portion and the second rack portion are spaced apart along the axial direction of the sleeve. The adjusting gear is disposed between the first rack portion and the second rack portion and meshes with the first rack portion and the second rack portion. The adjusting gear can be rotated to adjust the spacing between the first half shell and the second half shell along the second direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an isometric view of the nut torque testing machine according to an embodiment of the present invention in a first working position.

[0018] Figure 2 It is an isometric view of the nut torque testing machine according to an embodiment of the present invention in the second working position.

[0019] Figure 3 yes Figure 2 A partial schematic diagram of .

[0020] Figure 4 It is an isometric view of the nut torque testing machine according to the embodiment of the present invention in the third working position.

[0021] Figure 5 yes Figure 4 A partial schematic diagram of .

[0022] Figure 6 It is an isometric view of the nut torque testing machine according to the embodiment of the present invention in the third working position.

[0023] Figure 7 yes Figure 6 A partial schematic diagram of .

[0024] Figure 8 It is a schematic diagram of a feeding mechanism of a nut torque testing machine according to an embodiment of the present invention.

[0025] Fig. 9 It is a schematic diagram of another viewing angle of the feeding mechanism of the nut torque testing machine according to an embodiment of the present invention.

[0026] Fig.10 It is a half-section view of a feeding mechanism of a nut torque testing machine according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] 1. Test bench;

[0029] 2. Clamping mechanism; 21. Three-jaw chuck; 22. Vertical plate; 221. Through hole;

[0030] 3. Driving mechanism; 31. Linear driving device; 311. Second motor; 312. Linear slide; 32. Rotary driving device; 321. Base plate; 322. First motor assembly; 3221. First motor; 3222. Speed ​​reducer; 3223. Torque sensor; 323. Belt transmission assembly; 3231. Driving wheel; 3232. Driven wheel; 3233. Driving belt; 3234. Support seat; 3235. Fastener;

[0031] 4. Sleeve; 41. Nut mounting hole;

[0032] 5. Material return mechanism; 51. First cylinder; 52. Material return rod;

[0033] 6. Feeding mechanism; 61. Support plate; 62. Material storage device; 621. Pushing assembly; 6211. Third cylinder; 6212. Pushing rod; 6213. Pushing plate; 6214. Pushing column; 622. Material storage box; 6221. First half shell; 62211. First rack portion; 6222. Second half shell; 62221. Second rack portion; 6223. Material storage chamber; 623. Adjusting gear; 625. Pushing channel; 63. Feeding device; 631. Second cylinder; 632. Transplanting tube; 6321. Buffer chamber; 64. Constraint assembly; 641. Baffle plate; 642. Adjusting component;

[0034] 71. Pressing nut; 72. Anchor rod. DETAILED DESCRIPTION

[0035] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] Please refer to the following Figures 1 to 10 A nut torque testing machine according to an embodiment of the present invention will be described.

[0037] like Figures 1 to 10 As shown, the nut torque testing machine according to the embodiment of the present invention comprises: a test bench 1 , a clamping jaw mechanism 2 , a driving mechanism 3 and a sleeve 4 .

[0038] The clamping mechanism 2 is installed on the test bench 1. The clamping mechanism 2 has a locking hole, which is used to clamp and penetrate the anchor rod 72. The driving mechanism 3 includes a linear driving device 31 and a rotary driving device 32. The linear driving device 31 is installed on the test bench 1, and the rotary driving device 32 is installed on the linear driving device 31. The linear driving device 31 is used to drive the rotary driving device 32 to move in the direction of approaching and away from the clamping mechanism 2. The output end of the rotary driving device 32 is connected to the sleeve 4 to drive the sleeve 4 to rotate. A nut mounting hole 41 is provided in the sleeve 4. The nut mounting hole 41 is used to accommodate the pressure plate nut 71. The nut mounting hole 41 is opposite to the locking hole and is located on the same axis.

[0039] According to the nut torque testing machine of the embodiment of the present invention, when testing the compression nut 71, the anchor rod 72 can be clamped and fixed by the clamping claw mechanism 2, and the compression nut 71 is sleeved on the end of the anchor rod 72 adjacent to the sleeve 4. The linear drive device 31 drives the rotary drive device 32 and the sleeve 4 to move forward as a whole and approach the anchor rod 72. The nut mounting hole 41 in the sleeve 4 is aligned with the compression nut 71. The rotary drive device 32 and the linear drive device 31 work simultaneously to drive the sleeve 4 to rotate and move forward at the same time, thereby simulating the working condition of a real drilling rig driving the compression nut 71 to screw on the anchor rod 72, thereby improving the accuracy of compression nut detection and reducing the failure rate of the anchor rod 72.

[0040] It can be understood that during the actual installation process of the anchor rod 72, the anchor rod 72 is fixed in the anchor hole by the anchor agent, the drilling rig is started and drives the pressure plate nut 71 to rotate relative to the anchor rod 72, and when the pressure plate nut 71 exceeds the nut torque value, the pressure plate is pushed out until the nut is tightened to complete the installation of the anchor rod 72.

[0041] When the nut torque tester of the embodiment of the present invention is working, the linear drive device 31 can synchronously drive the sleeve 4 to move forward when the sleeve 4 rotates, thereby avoiding the problem that the compression nut 71 is disengaged from the sleeve 4 when rotating on the anchor rod 72, thereby simulating the performance of the drilling rig to obtain a more accurate torque value, better control the quality of the nut, reduce the failure rate of the anchor rod 72, improve the efficiency of tunnel support, and reduce the support cost. The nut torque tester can be used in anchor rod 72 production plants and compression nut manufacturing plants, and can perform factory inspection or factory inspection of compression nuts.

[0042] For example, the nut mounting hole 41 may be a hexagonal hole. After the pressure plate nut 71 is mounted in the nut mounting hole 41, the pressure plate nut 71 may rotate with the rotation of the sleeve 4, wherein the aperture and depth of the nut mounting hole 41 may be selected according to the pressure plate nut 71 actually tested, and this application does not limit this.

[0043] It should be noted that, in order to realize torque detection of the nut torque tester, a torque sensor 3223 may be provided in the rotation drive device 32 .

[0044] Alternatively, if Figure 3 and Figure 5 As shown, the rotary drive device 32 includes a base plate 321, a first motor assembly 322 and a belt transmission assembly 323. The base plate 321 is installed on the linear drive device 31. The belt transmission assembly 323 includes a driving wheel 3231, a driven wheel 3232, a transmission belt 3233 and a support seat 3234. The first motor assembly 322 is installed on the base plate 321 and is transmission-connected to the driving wheel 3231. The support seat 3234 is installed on the base plate 321 and its position relative to the base plate 321 is adjustable. The driven wheel 3232 is rotatably installed on the support seat 3234 and is coaxially connected to the sleeve 4. The transmission belt 3233 is sleeved on the driving wheel 3231 and the driven wheel 3232.

[0045] It can be understood that the first motor assembly 322 can drive the driving wheel 3231 to rotate, the driving wheel 3231 can drive the transmission belt 3233 to rotate, the transmission belt 3233 can drive the driven wheel 3232 to rotate, and the driven wheel 3232 can drive the sleeve 4 to rotate coaxially, thereby driving the rotation of the compression nut.

[0046] like Figure 3 and Figure 5 As shown, since the support seat 3234 is mounted on the base plate 321 and its position relative to the base plate 321 is adjustable, when the locking hole of the clamp mechanism 2 is not concentric with the nut mounting hole 41 of the sleeve 4, that is, when the anchor rod 72 clamped by the clamp mechanism 2 and the pressing plate nut 71 are not concentric and cause a jam during assembly, the position of the support seat 3234 relative to the base plate 321 can be adjusted, so that the nut mounting hole 41 of the sleeve 4 and the locking hole of the clamp mechanism 2 can be adjusted to the same axis. When the support seat 3234 is adjusted relative to the base, the driven wheel 3232 will also be adjusted accordingly. Therefore, the pulley has a certain tension, so when the support seat 3234 is adjusted relative to the base plate 321, although the driven wheel 3232 will have a certain position change, the driving wheel 3231 can still drive the driven wheel 3232 to rotate through the transmission belt 3233.

[0047] The nut torque testing machine of the present application adopts a belt drive for the rotating drive device 32, which can facilitate the adjustment of the relative position of the sleeve 4 compared to the scheme of setting a gear drive. The belt drive has an overload protection effect, which is beneficial to avoiding the problem of overload and burning of the first motor assembly 322 due to the jamming of the sleeve 4 when screwing the pressure plate nut 71, and is beneficial to protecting the motor and extending the service life of the nut torque testing machine.

[0048] For example, an adjustment shim (not shown) can be provided between the support seat 3234 and the base plate 321, and the height of the support seat 3234 can be adjusted by increasing or decreasing the number of the adjustment shims. A strip hole (not shown) is provided on the base plate 321, and the strip hole extends in the left-right direction. The support seat 3234 is connected to the strip hole through a fastener 3235 (i.e., a bolt). When adjusting the left-right position of the support seat 3234, the fastener 3235 can be loosened and slid in the strip hole to achieve the left-right position adjustment of the support seat 3234, thereby improving the convenience of adjusting the support seat 3234 relative to the base.

[0049] Alternatively, if Figure 3 and Figure 5 As shown, the nut torque tester also includes a material removal mechanism 5, which includes a first cylinder 51 and a material removal rod 52. The material removal rod 52 is coaxially arranged with the nut mounting hole 41 and extends in a direction away from the clamp mechanism 2. The first cylinder 51 is installed on the base plate 321 and connected to one end of the material removal rod 52. The first cylinder 51 is used to drive the other end of the material removal rod 52 to penetrate and withdraw from the nut mounting hole 41. It can be understood that the first cylinder 51 is relatively fixed to the base plate 321, and the first cylinder 51 can drive the material removal rod 52 to extend and retract. After the detection of the pressure plate nut 71 is completed, the first cylinder 51 can drive the material removal rod 52 to extend to the nut mounting hole 41 to push the pressure plate nut 71 retained in the sleeve 4 out of the sleeve 4. After the pressure plate nut 71 is pushed out of the sleeve 4, the material removal rod 52 is driven to retract by the first cylinder 51, thereby completing the material removal work of the nut torque tester so that the nut torque tester can perform the next test.

[0050] For example, the sleeve 4 and the clamp mechanism 2 are arranged along a first direction (eg Figure 1 The driving wheel 3231 and the driven wheel 3232 are arranged in a spaced relationship along the second direction (such as Figure 1 The first direction, the second direction and the height direction of the test bench 1 are arranged at intervals, and the first direction, the second direction and the height direction of the test bench 1 are orthogonal to each other. Since the driving wheel 3231 and the driven wheel 3232 are arranged at intervals along the left and right directions, a certain space can be reserved for the installation of the material removal mechanism 5, so that the structure of the nut torque tester is more compact.

[0051] Specifically, Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the first motor assembly 322 includes a first motor 3221, a reducer 3222 and a torque sensor 3223. The first motor assembly 322 is connected to the reducer 3222 in a transmission manner, and the reducer 3222 is connected to the driving wheel 3231 in a transmission manner through the torque sensor 3223. It can be understood that the first motor 3221 can drive the reducer 3222 to rotate, the reducer 3222 can reduce speed and increase torque, and is connected to the torque sensor 3223. The torque sensor 3223 can detect the torque when the sleeve 4 rotates, and the torque sensor 3223 can provide a more accurate test value for the torque detection of the nut torque tester.

[0052] Furthermore, if Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the linear drive device 31 includes a second motor 311 and a linear slide 312, both of which are mounted on the test bench 1, and the base plate 321 is mounted on the linear slide 312. The second motor 311 can drive the linear slide 312 to move forward and backward through a ball screw pair or a gear rack structure to achieve the forward and backward movement of the rotary drive device 32 and the sleeve 4.

[0053] Alternatively, if Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the clamping mechanism 2 includes a three-jaw chuck 21 and a vertical plate 22. The vertical plate 22 is installed on the test bench 1, the three-jaw chuck 21 is installed on the vertical plate 22, the locking hole is provided on the three-jaw chuck 21, and the vertical plate 22 is provided with a through hole 221, which is connected to the locking hole and arranged relatively. The anchor rod 72 can be inserted into the locking hole through the through hole 221 and fixed by the three-jaw chuck 21. It should be noted that the three-jaw chuck 21 can clamp anchor rods 72 of different specifications and models. Correspondingly, the sleeve 4 can also be replaced with a sleeve 4 of a model corresponding to the anchor rod 72.

[0054] In some embodiments, Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, the nut torque tester also includes a feeding mechanism 6, which includes a support plate 61, a storage device 62 and a feeding device 63. The support plate 61 is mounted on the base plate 321, and the storage device 62 and the feeding device 63 are both mounted on the support plate 61. The storage device 62 is used to supply the pressing nut 71 to the feeding device 63, and the feeding device 63 is used to push the pressing nut 71 between the sleeve 4 and the anchor rod 72. The linear drive device 31 can drive the feeding mechanism 6 to move in the direction of approaching and moving away from the clamping jaw mechanism 2, so as to insert the pressing nut 71 pushed by the feeding device 63 into the anchor rod 72. It can be understood that the nut torque tester of the embodiment of the present invention can complete the automatic feeding process of the pressing nut 71 through the feeding mechanism 6, so as to improve the automation degree of the nut torque tester and save labor costs.

[0055] It should be noted that the storage device 62 stores a plurality of compression nuts 71 to be tested, and the storage device 62 can transport the compression nuts 71 to be tested to the feeding device 63. Figure 2 As shown, the feeding device 63 can push the pressure piece nut 71 to be tested to a position between the sleeve 4 and the anchor rod 72. Figure 4 As shown, the linear drive device 31 moves forward, and can synchronously drive the pressure piece nut 71 to be tested on the feeding device 63 to move forward, so that the pressure piece nut 71 to be tested is inserted into the anchor rod 72. Then the feeding device 63 is reset (as shown in FIG. Figure 6 As shown in the figure, the linear drive device 31 then drives the rotary drive device 32 and the sleeve 4 to move forward as a whole and approach the anchor rod 72, the nut mounting hole 41 in the sleeve 4 is aligned with the pressure plate nut 71, and the rotary drive device 32 and the linear drive device 31 work simultaneously to drive the sleeve 4 to rotate and move forward at the same time, thereby simulating the working condition of a real drilling rig driving the pressure plate nut 71 to screw on the anchor rod 72.

[0056] Specifically, Figure 3 , Figure 5 and Figure 7 As shown, the feeding device 63 includes a connected second cylinder 631 and a transplanting cylinder 632, and a buffer chamber 632 is provided in the transplanting cylinder 632. The second cylinder 631 is provided on the support plate 61 and can drive the transplanting cylinder 632 to move between a first feeding position and a first discharging position. At the first feeding position, the storage device 62 can feed the stored compression nut 71 into the buffer chamber 6321, and the transplanting cylinder 632 is spaced apart from the sleeve 4 in a direction orthogonal to the axial direction of the sleeve 4. At the first discharging position, the transplanting cylinder 632 and the sleeve 4 are located on the same axis so that the compression nut 71 in the buffer chamber 6321 is aligned with the anchor rod 72.

[0057] It is understandable that the second cylinder 631 can drive the transplanting cylinder 632 to move up and down. The second cylinder 631 is installed on the support plate 61 and is located at the upper end of the sleeve 4, and the transplanting cylinder 632 is installed at the lower end of the second cylinder 631. Figure 1 As shown, in the first feeding position, the second cylinder 631 is retracted. Figure 2 As shown, when in the first discharging position, the second cylinder 631 extends. At this time, the nut mounting hole 41 of the sleeve 4, the buffer cavity of the transplanting tube 632, the pressing piece nut 71 and the anchor rod 72 in the buffer cavity are located on the same axis.

[0058] The nut torque testing machine of an embodiment of the present invention can realize the feeding process of the press nut 71 by setting the feeding device 63 to the above-mentioned structure through the cooperation between the feeding device 63 and the linear drive device 31, thereby simplifying the feeding structure of the feeding device 63 and making the structure of the nut torque testing machine more concise.

[0059] In some embodiments, Figure 3 , Figure 5 and Figure 7 As shown, the material storage device 62 includes a pushing assembly 621 and a material storage box 622. A material storage cavity 6223 is provided in the material storage box 622. The material storage cavity 6223 is used to store the pressure sheet nuts 71 arranged in sequence along the up and down directions. The lower end of the material storage box 622 and the support plate 61 define a pushing channel 625. The lower end of the material storage cavity 6223 is connected to one end of the pushing channel 625. At the first feeding position, the other end of the pushing channel 625 is connected to the cache cavity 6321. The pushing assembly 621 is used to push the pressure sheet nut 71 at the lower end of the material storage cavity 6223 to the cache cavity 6321 through the pushing channel 625.

[0060] It is understandable that the push assembly 621 can deliver the pressing nut 71 in the storage box 622 into the buffer chamber 6321 in the transplanting tube 632 through the push channel 625, thereby realizing the loading process of the loading mechanism 6. Since the pressing nut 71 moves in the push channel 625, the push channel 625 can guide the pressing nut 71 to avoid the problem of material jamming when the pressing nut 71 enters the buffer chamber 6321.

[0061] Furthermore, if Figures 8 to 10As shown, the feeding mechanism 6 also includes a constraint assembly 64, which includes a baffle 641 and an adjusting component 642. The baffle 641 is installed at the upper end of the push channel 625, and the adjusting component 642 is connected to the baffle 641. The adjusting component 642 is used to adjust the height of the baffle 641. The nut torque testing machine of the embodiment of the present invention can further improve the smoothness of the movement of the press plate nut 71 in the push channel 625 by setting the baffle 641. In addition, since the adjusting component 642 can adjust the height of the baffle 641, different types of press plate nuts 71 can pass through the push channel 625, thereby expanding the application range of the feeding mechanism 6.

[0062] For example, the adjustment component 642 may be an adjustment bolt.

[0063] Specifically, Fig.10 As shown, the pushing assembly 621 includes a third cylinder 6211 and a pushing rod 6212. The third cylinder 6211 is installed on the support plate 61 and is connected to one end of the pushing rod 6212. The other end of the pushing rod 6212 extends along the length direction of the pushing channel 625. The third cylinder 6211 can drive the pushing rod 6212 to move between the second feeding position and the second discharging position. At the second feeding position, the other end of the pushing rod 6212 withdraws from the storage chamber 6223, and at the second discharging position, the other end of the pushing rod 6212 penetrates into the storage chamber 6223 and the pushing channel 625 to push the pressing nut 71 at the lower end of the storage chamber 6223 to the cache chamber 6321 through the pushing channel 625.

[0064] It is understandable that if Fig.10 As shown, the third cylinder 6211 can drive the push rod 6212 to extend and retract. When the push rod 6212 moves to the second discharging position, the pressing nut 71 at the lower end of the storage chamber 6223 can be pushed to the buffer chamber 6321 through the pushing channel 625. When the push rod 6212 moves to the second feeding position, the push rod 6212 is reset. Since the pressing nut 71 at the lower end of the storage chamber 6223 is pushed out, the pressing nut 71 in the storage chamber 6223 will drop one empty position in turn and prepare for the next feeding.

[0065] like Fig.10As shown, the other end of the push rod 6212 is provided with a push plate 6213 and at least two push posts 6214, and the two push posts 6214 are respectively arranged on the left and right sides of the push plate 6213 along the axial extension of the push rod 6212, and the ends of the two push posts 6214 facing away from the push plate 6213 are flush, thereby ensuring the stability of the push posts 6214 when pushing materials. A stopper is provided at the upper end of the push plate 6213. At the second discharging position, the push post 6214 pushes the pressing piece nut 71 at the lower end of the storage chamber 6223 to the buffer chamber 6321 through the pushing channel 625, and the stopper is used to stop the remaining pressing piece nuts 71 in the storage chamber 6223 from falling downward, thereby avoiding the problem of material jamming when the push rod 6212 is retracted, which is conducive to improving the smoothness of the movement of the push assembly 621.

[0066] Alternatively, if Figures 8 to 10 As shown, the material storage box 622 includes a first half shell 6221, a second half shell 6222 and an adjusting gear 623. The first half shell 6221 and the second half shell 6222 are spaced apart along the second direction to define a material storage cavity 6223. The second direction, the axial direction of the sleeve 4 and the height direction of the test bench 1 are orthogonal to each other. The lower end of the first half shell 6221 has a first rack portion 62211, and the lower end of the second half shell 6222 has a second rack portion 62221. The first rack portion 62211 and the second rack portion 62222 are spaced apart along the second direction to define a material storage cavity 6223. The second direction, the axial direction of the sleeve 4 and the height direction of the test bench 1 are orthogonal to each other. The two rack portions 62221 both extend along the second direction and the extension directions of the two are opposite. The first rack portion 62211 and the second rack portion 62221 are arranged at intervals along the axial direction of the sleeve 4. The adjusting gear 623 is arranged between the first rack portion 62211 and the second rack portion 62221, and is meshed with the first rack portion 62211 and the second rack portion 62221. The adjusting gear 623 is rotatable to adjust the spacing between the first half shell 6221 and the second half shell 6222 along the second direction.

[0067] It is understandable that if Fig.10 As shown, the operator can rotate the adjustment gear 623. When the adjustment gear 623 rotates, the first rack portion 62211 and the second rack portion 62221 can move in opposite directions, thereby adjusting the spacing between the first half shell 6221 and the second half shell 6222 along the second direction, so that the storage chamber 6223 can store press nuts 71 of different specifications and models, thereby further expanding the application range of the nut torque tester.

[0068] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0070] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0072] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0073] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A nut torque testing machine, characterized in that: include: Test bench; A clamping mechanism, wherein the clamping mechanism is mounted on the test bench, and the clamping mechanism has a locking hole, and the locking hole is used to clamp and penetrate an anchor rod; A driving mechanism, the driving mechanism comprising a linear driving device and a rotary driving device, the linear driving device being mounted on the test bench, the rotary driving device being mounted on the linear driving device, the linear driving device being used to drive the rotary driving device to move in a direction approaching and away from the clamping mechanism; The output end of the rotary drive device is connected to the sleeve to drive the sleeve to rotate. A nut mounting hole is provided in the sleeve. The nut mounting hole is used to accommodate a pressure plate nut. The nut mounting hole is opposite to the locking hole and is located on the same axis.

2. The nut torque testing machine according to claim 1, characterized in that: The rotary drive device includes a base plate, a first motor assembly and a belt transmission assembly. The base plate is mounted on the linear drive device. The belt transmission assembly includes a driving wheel, a driven wheel, a transmission belt and a support seat. The first motor assembly is mounted on the base plate and is transmission-connected to the driving wheel. The support seat is mounted on the base plate and its position relative to the base plate is adjustable. The driven wheel is rotatably mounted on the support seat and is coaxially connected to the sleeve. The transmission belt is sleeved on the driving wheel and the driven wheel.

3. The nut torque testing machine according to claim 2, characterized in that: The nut torque testing machine also includes a material stripping mechanism, which includes a first cylinder and a material stripping rod. The material stripping rod is coaxially arranged with the nut mounting hole and extends in a direction away from the clamping mechanism. The first cylinder is mounted on the base plate and connected to one end of the material stripping rod. The first cylinder is used to drive the other end of the material stripping rod to penetrate into and withdraw from the nut mounting hole.

4. The nut torque testing machine according to claim 3, characterized in that: The sleeve and the clamp mechanism are arranged at intervals along a first direction, the driving wheel and the driven wheel are arranged at intervals along a second direction, and the first direction, the second direction and the height direction of the test bench are orthogonal to each other; And / or, the first motor assembly includes a first motor, a reducer and a torque sensor, the first motor assembly is transmission-connected to the reducer, and the reducer is transmission-connected to the driving wheel via the torque sensor; And / or, the clamping mechanism includes a three-jaw chuck and a vertical plate, the vertical plate is installed on the test bench, the three-jaw chuck is installed on the vertical plate, the locking hole is provided on the three-jaw chuck, and the vertical plate is provided with a through hole, the through hole is connected to the locking hole and is arranged relatively.

5. The nut torque testing machine according to any one of claims 2 to 4, characterized in that: The nut torque testing machine also includes a feeding mechanism, which includes a support plate, a storage device and a feeding device, the support plate is installed on the base plate, the storage device and the feeding device are both installed on the support plate, the storage device is used to supply the compression nut to the feeding device, and the feeding device is used to push the compression nut between the sleeve and the anchor rod, and the linear drive device can drive the feeding mechanism to move in the direction of approaching and moving away from the clamping jaw mechanism so as to insert the compression nut pushed by the feeding device into the anchor rod.

6. The nut torque testing machine according to claim 5, characterized in that: The feeding device includes a connected second cylinder and a transplanting cylinder, a cache cavity is provided in the transplanting cylinder, the second cylinder is arranged on the support plate and can drive the transplanting cylinder to move between a first feeding position and a first discharging position, at the first feeding position, the storage device can feed the stored compression nuts into the cache cavity, and the transplanting cylinder and the sleeve are spaced apart in a direction orthogonal to the axial direction of the sleeve, at the first discharging position, the transplanting cylinder and the sleeve are located on the same axis, so that the compression nut in the cache cavity is aligned with the anchor rod.

7. The nut torque testing machine according to claim 6, characterized in that: The material storage device includes a material pushing assembly and a material storage box. The material storage box is provided with a material storage cavity, and the material storage cavity is used to store compression nuts arranged in sequence along the up and down directions. The lower end of the material storage box and the support plate define a pushing channel, and the lower end of the material storage cavity is connected with one end of the pushing channel. At the first feeding position, the other end of the pushing channel is connected with the cache cavity. The material pushing assembly is used to push the compression nut at the lower end of the material storage cavity to the cache cavity through the pushing channel.

8. The nut torque testing machine according to claim 7, characterized in that: The pushing assembly includes a third cylinder and a pushing rod. The third cylinder is mounted on the support plate and connected to one end of the pushing rod. The other end of the pushing rod extends along the length direction of the pushing channel. The third cylinder can drive the pushing rod to move between a second feeding position and a second discharging position. At the second feeding position, the other end of the pushing rod withdraws from the material storage cavity, and at the second discharging position, the other end of the pushing rod penetrates into the material storage cavity and the pushing channel to push the pressing nut at the lower end of the material storage cavity to the cache cavity through the pushing channel.

9. The nut torque testing machine according to claim 8, characterized in that: The other end of the push rod is provided with a push plate and at least two push pillars, the two push pillars are respectively arranged on the left and right sides of the push plate along the axial extension of the push rod, and the two push pillars are flush with one end of the push plate away from the push plate, and a stopper is provided at the upper end of the push plate. In the second discharging position, the push pillar pushes the pressing nut at the lower end of the storage cavity to the buffer cavity through the pushing channel, and the stopper is used to stop the remaining pressing nuts in the storage cavity from falling downward; And / or, the feeding mechanism also includes a constraint component, the constraint component includes a baffle and an adjustment component, the baffle is installed at the upper end of the pushing channel, the adjustment component is connected to the baffle, and the adjustment component is used to adjust the height of the baffle.

10. The nut torque testing machine according to claim 7, characterized in that: The material storage box includes a first half shell, a second half shell and an adjusting gear. The first half shell and the second half shell are spaced apart along a second direction to define a material storage cavity. The second direction, the axial direction of the sleeve and the height direction of the test bench are orthogonal to each other. The lower end of the first half shell has a first rack portion, and the lower end of the second half shell has a second rack portion. The first rack portion and the second rack portion both extend along the second direction and the extension directions of the two are opposite. The first rack portion and the second rack portion are spaced apart along the axial direction of the sleeve. The adjusting gear is disposed between the first rack portion and the second rack portion and meshed with the first rack portion and the second rack portion. The adjusting gear can be rotated to adjust the spacing between the first half shell and the second half shell along the second direction.

Images