Anchor rod drawing force detection device

Abstract

The invention relates to an anchor rod drawing force detection device, and relates to the technical field of anchor rod detection.The anchor rod drawing force detection device comprises a hand pump, a hydraulic cylinder, a sleeve type anchorage device, an oil pipe and a pressure displayers, the sleeve type anchorage device comprises a threaded cylinder used for being connected with a detected anchor rod, and the end, away from the detected anchor rod, of the threaded cylinder is fixedly connected with a threaded rod; the threaded rod is sleeved with a gasket and is in threaded connection with a fixing nut at the same time, the gasket abuts against the hydraulic cylinder through the fixing nut, and a limiting frame is installed at the end, away from the threaded barrel, of the threaded rod. A limiting frame is arranged on the threaded rod, a fixing assembly used for fixing the limiting frame to the threaded rod is arranged between the limiting frame and the threaded rod, a limiting ring is arranged on one side of the limiting frame, a connecting assembly used for connecting the limiting frame with the limiting ring is arranged between the limiting frame and the limiting ring, and a limiting rod is arranged on the inner wall of the limiting ring. The device has the effect of enabling the telescopic direction of the hydraulic cylinder to coincide with the axis of the anchorage device in the testing process.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of anchor rod detection, in particular to an anchor rod pull-out force detection device. BACKGROUND

[0002] In the fields of geotechnical engineering, mine exploitation and tunnel construction, an anchor rod is an important supporting structure, and the anchoring quality of the anchor rod is directly related to the stability and safety of the project. The anchor rod pull-out force is a core index for evaluating the anchoring effect of the anchor rod, and therefore, accurately conducting the anchor rod pull-out test is a key link in the project quality detection.

[0003] At present, the anchor rod pull-out force detection device widely used in the industry mainly comprises an anchor device, a hydraulic cylinder and a pull-out force sensor. During the test, the anchor device is first sleeved and fixed on the exposed end of the anchor rod to be detected, and then the hydraulic cylinder is coaxially sleeved outside the anchor device, the hydraulic cylinder is used to apply an axial pull-out force to the anchor rod, and the pull-out force data is collected by using the pull-out force sensor. However, the existing device has significant structural defects in actual application: because the assembly of the hydraulic cylinder and the anchor device needs to reserve a certain installation gap, there is inevitably a gap between the inner wall of the hydraulic cylinder and the outer wall of the anchor device. The gap will cause the hydraulic cylinder to lose precise guiding constraints during the extension and retraction process, and the extension and retraction direction is easy to deviate, and the coaxial state with the anchor rod cannot be strictly maintained.

[0004] This direction deviation will cause a series of problems: on the one hand, the pull-out force applied to the anchor rod produces a transverse component, which causes the anchor rod to bear additional torque and shear stress, thereby destroying the axial force condition of the pull-out test; on the other hand, the transverse component will interfere with the force sensing of the pull-out force sensor, causing the detection data to deviate, and in severe cases, the test result will be distorted, and the actual anchoring capacity of the anchor rod cannot be accurately reflected. This not only affects the reliability of the project quality evaluation, but also may cause safety hazards for subsequent construction, and therefore, it is urgent to optimize and improve the structure of the existing anchor rod pull-out force detection device to solve the problem of insufficient measurement accuracy caused by the gap between the hydraulic cylinder and the anchor device. SUMMARY

[0005] In order to make the extension and retraction direction of the hydraulic cylinder coincide with the axis of the anchor device during the test, the application provides an anchor rod pull-out force detection device.

[0006] The anchor rod pull-out force detection device provided by the application adopts the following technical scheme: The utility model provides an anchor rod pulling force detection device, including hand pressure pump, hydraulic cylinder, sleeve type anchor, oil pipe, pressure display, sleeve type anchor includes the thread barrel for being connected with the anchor rod of being detected, the thread barrel is fixedly connected with the threaded rod away from the one end of anchor rod of being detected, the threaded rod is coaxial with thread barrel arrangement, the hydraulic cylinder is sleeved on threaded rod, the threaded rod is sleeved with gasket and is connected with fixed nut simultaneously, fixed nut will gasket resist tightly on hydraulic cylinder, the threaded rod is installed with the limit frame away from the one end of thread barrel, the limit frame with threaded rod between is equipped with the fixing assembly for fixing limit frame on threaded rod, one side of limit frame is equipped with the limit ring, the limit ring is coaxial with the output shaft of hydraulic cylinder arrangement, the limit ring with limit ring between is equipped with the connecting assembly for connecting both, the inner wall of limit ring is equipped with the limit rod, the limit rod with the outer wall of hydraulic cylinder abuts, hand pressure pump is connected on hydraulic cylinder through oil pipe, pressure display is installed on hand pressure pump.

[0007] Through the above technical scheme, the threaded rod is connected with the measured anchor rod, then the hydraulic cylinder is sleeved on the threaded rod, then the gasket is sleeved on the threaded rod and the fixed nut is threadedly connected, so that the fixed nut abuts against the gasket on the output shaft of the hydraulic cylinder, then the limit frame is fixed on the threaded rod through the fixing assembly, so that the limit ring is fixed with the limit through the connecting assembly, and the position of the hydraulic cylinder is limited through the limit rod on the limit ring, so that the hydraulic cylinder and the threaded rod remain coaxial state, then the hydraulic cylinder is started through the oil pipe by adjusting the hand pressure pump, and the measurement value is sensed through the pressure gauge, so that the axis of the telescopic part of the hydraulic cylinder always coincides with the axis of the measured anchor rod, thereby ensuring the accuracy and normal operation of the measurement work.

[0008] Optionally, the fixing assembly comprises an insertion block, the insertion block is fixedly connected with the limit frame, an insertion slot is formed in the end of the threaded rod, the insertion block is inserted into the insertion slot, a fixing bolt is threaded through the insertion block and is threadedly connected with the insertion block, and the rod portion of the fixing bolt is threadedly connected with the bottom of the insertion slot.

[0009] Through the above technical scheme, the insertion block can be fixed in the insertion slot by rotating the fixing bolt, and the limit frame is fixed with the threaded rod.

[0010] Optionally, a plurality of horizontal rods are threaded through and fixedly connected with the limit ring, the length direction of the horizontal rods is parallel to the axis direction of the threaded rod, and the limit rod is fixedly connected with the horizontal rods.

[0011] Through the above technical scheme, the limit ring can be reinforced by the horizontal rods, and the limiting effect of the limit ring on the hydraulic cylinder is improved.

[0012] Optionally, an arc-shaped abutting plate is fixedly connected to the end of the limiting rod away from the horizontal rod.

[0013] By adopting the above technical scheme, the contact area of the limiting rod and the hydraulic cylinder can be increased through the arc-shaped abutting plate, and the limiting effect is improved.

[0014] Optionally, the connecting assembly comprises a first inclined block fixedly connected to the end of the limiting frame, a second inclined block fixedly connected to the horizontal rod, the first inclined block and the second inclined block are parallel to each other, the first inclined block and the second inclined block abut each other and are provided with a same connecting bolt, and a abutting nut is threadedly connected to the connecting bolt and abuts against the side wall of the lower part of the second inclined block.

[0015] By adopting the above technical scheme, the first inclined block and the second inclined block can be fixed through the abutting nut and the connecting bolt, and the horizontal rod and the limiting frame can be fixed.

[0016] Optionally, a sliding hole is formed in each of the first inclined block and the second inclined block, and the connecting bolt is arranged in the sliding hole.

[0017] By adopting the above technical scheme, the fault tolerance of the fixing of the first inclined block and the second inclined block can be increased through the sliding hole, and the adaptability of the device is improved.

[0018] Optionally, a supporting leg is fixedly connected to the horizontal rod.

[0019] By adopting the above technical scheme, the horizontal rod can be supported through the supporting leg, and the limiting effect is improved.

[0020] Optionally, the plug is a square block, and the slot is a square slot with a size suitable for the square block.

[0021] By adopting the above technical scheme, the position of the plug can be determined, and the installation convenience is improved.

[0022] In summary, the present application has at least one of the following beneficial technical effects: 1. The position of the hydraulic cylinder is limited by the limiting rod on the limiting ring, so that the hydraulic cylinder and the threaded rod remain coaxial, then the hydraulic cylinder is started by adjusting the hand pump through the oil pipe, and the measurement value is sensed by the pressure gauge, so that the axis of the hydraulic cylinder extension part always coincides with the axis of the measured anchor rod, and the accuracy and normal operation of the measurement work are ensured; 2. The plug is fixed in the slot by rotating the fixing bolt, and the limiting frame is fixed with the threaded rod; 3. The fault tolerance of the fixing of the first inclined block and the second inclined block can be increased through the sliding hole, and the adaptability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a schematic diagram of the structure of a fixing assembly of an embodiment of the present application.

[0024] In the figure, 1, hand pump; 2, hydraulic cylinder; 3, sleeve anchor; 31, threaded barrel; 32, threaded rod; 321, insertion slot; 33, gasket; 34, fixing nut; 4, oil pipe; 5, pressure display; 6, limiting frame; 7, fixing assembly; 71, insertion block; 72, fixing bolt; 8, limiting ring; 9, connecting assembly; 91, first inclined block; 911, sliding hole; 92, second inclined block; 93, connecting bolt; 94, abutting nut; 10, limiting rod; 11, arc abutting plate; 12, support leg; 13, horizontal rod. DETAILED DESCRIPTION

[0025] The following will be described in detail below with reference to the accompanying drawings Figure 1 - the accompanying drawings Figure 2 , and the present application will be further described in detail.

[0026] An embodiment of the present application is: an anchor rod pulling force detection device, referring to Figure 1 and Figure 2 , comprising a hand pump, a hydraulic cylinder 2, a sleeve anchor 3, an oil pipe 4, and a pressure display 5, wherein the hand pump 1 is connected to the hydraulic cylinder 2 through the oil pipe 4, and then the hand pump 1 provides hydraulic power to transmit pressure to the hydraulic cylinder 2, and the pressure display 5 is installed on the hand pump 1.

[0027] The sleeve anchor 3 comprises a threaded barrel 31, Figure 1 The threaded barrel 31 is threadedly connected to the anchor rod being measured and coaxially arranged with the anchor rod being measured, and the hydraulic cylinder 2 is sleeved on the threaded rod 32, the threaded rod 32 is fixedly connected to the threaded barrel 31 away from the anchor rod being measured, the threaded rod 32 is coaxially arranged with the threaded barrel 31, the hydraulic cylinder 2 is sleeved on the threaded rod 32, the threaded rod 32 is sleeved with the gasket 33 and simultaneously threadedly connected with the fixing nut 34, and the fixing nut 34 abuts the gasket 33 against the hydraulic cylinder 2.

[0028] Thus, by adjusting the hand pump 1 to start the hydraulic cylinder 2 through the oil pipe 4, and by the pressure gauge sensing the measurement value, the hydraulic cylinder 2 can be made to apply an external force to the gasket 33, thereby measuring the pulling force of the anchor rod.

[0029] A limiting frame 6 is installed at one end of the threaded rod 32 away from the threaded barrel 31, and a fixing assembly 7 for fixing the limiting frame 6 on the threaded rod 32 is arranged between the limiting frame 6 and the threaded rod 32.

[0030] The fixing assembly 7 comprises an insertion block 71 fixedly connected with the limiting frame 6, an end of the threaded rod 32 is provided with an insertion slot 321, the insertion block 71 is inserted into the insertion slot 321, a fixing bolt 72 is threadedly connected with the insertion block 71, and the rod of the fixing bolt 72 is threadedly connected with the bottom of the insertion slot 321. In order to facilitate the determination of the position of the limiting frame 6, the insertion block 71 is provided as a square block, and the insertion slot 321 is provided as a square slot matching the size of the square block.

[0031] The limiting frame 6 is provided with a limiting ring 8 on one side, the limiting ring 8 is coaxially arranged with the threaded cylinder 31, and the limiting ring 8 is coaxially arranged with the output shaft of the hydraulic cylinder 2. The limiting frame 6 and the limiting ring 8 are provided with a connecting assembly 9 for connecting the two.

[0032] The connecting assembly 9 comprises a first inclined block 91 fixedly connected with the end of the limiting frame 6, a second inclined block 92 fixedly connected with the horizontal rod 13, the first inclined block 91 and the second inclined block 92 are parallel to each other, the first inclined block 91 and the second inclined block 92 are abutted with each other and are provided with a same connecting bolt 93, the first inclined block 91 and the second inclined block 92 are provided with sliding holes 911, and the connecting bolt 93 is arranged in the sliding holes 911. A abutting nut 94 is threadedly connected with the connecting bolt 93, and the abutting nut 94 is abutted against the side wall of the lower part of the second inclined block 92.

[0033] The limiting ring 8 is provided with a limiting rod 10 at the inner wall, and the horizontal rod 13 is fixedly connected with a supporting leg 12. The limiting rod 10 is fixedly connected with an arc-shaped abutting plate 11 away from the horizontal rod 13. The limiting rod 10 is abutted with the outer wall of the hydraulic cylinder 2 through the arc-shaped abutting plate 11, a plurality of horizontal rods 13 are arranged on the limiting ring 8 and are fixedly connected with the limiting ring 8, and the horizontal rods 13 are provided as two in the embodiment. The length direction of the horizontal rod 13 is parallel to the axis direction of the threaded rod 32, and the limiting rod 10 is fixedly connected with the horizontal rod 13.

[0034] Then, when the position of the horizontal rod 13 and the limiting frame 6 is determined, the connecting bolt 93 can be arranged in the sliding hole 911, and then the abutting nut 94 is rotated to abut against the lower end of the sliding hole 911, so as to fix the horizontal rod 13 and the limiting frame 6.

[0035] The embodiments of the specific implementation are the preferred embodiments of the application, and are not limited to the protection scope of the application, wherein the same parts are indicated by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A device for detecting the pull-out force of an anchor bolt, comprising a hand pump (1), a hydraulic cylinder (2), a sleeve-type anchor (3), an oil pipe (4), and a pressure display (5), characterized in that, The sleeve-type anchor (3) includes a threaded cylinder (31) for connecting to the anchor rod being tested. A threaded rod (32) is fixedly connected to the end of the threaded cylinder (31) away from the anchor rod being tested. The threaded rod (32) is coaxially arranged with the threaded cylinder (31). The hydraulic cylinder (2) is sleeved on the threaded rod (32). A washer (33) is sleeved on the threaded rod (32) and a fixing nut (34) is threadedly connected to it. The fixing nut (34) presses the washer (33) against the hydraulic cylinder (2). A limit frame (6) is installed at the end of the threaded rod (32) away from the threaded cylinder (31). The limit frame (6) is connected to the threaded rod. A fixing assembly (7) for fixing the limiting frame (6) on the threaded rod (32) is provided between (32). A limiting ring (8) is provided on one side of the limiting frame (6). The limiting ring (8) is coaxially arranged with the output shaft of the hydraulic cylinder (2). A connecting assembly (9) for connecting the two is provided between the limiting frame (6) and the limiting ring (8). A limiting rod (10) is provided on the inner wall of the limiting ring (8). The limiting rod (10) abuts against the outer wall of the hydraulic cylinder (2). The hand pump (1) is connected to the hydraulic cylinder (2) through the oil pipe (4). The pressure display (5) is installed on the hand pump (1).

2. The anchor bolt pull-out force detection device according to claim 1, characterized in that, The fixing component (7) includes a plug (71), which is fixedly connected to the limiting frame (6). The end of the threaded rod (32) is provided with a slot (321), and the plug (71) is inserted into the slot (321). A fixing bolt (72) is threaded through and threaded onto the plug (71), and the shank of the fixing bolt (72) is threaded to the bottom of the slot (321).

3. The anchor bolt pull-out force detection device according to claim 1, characterized in that, Multiple horizontal rods (13) are threaded through and fixedly connected to the limiting ring (8). The length direction of the horizontal rods (13) is parallel to the axial direction of the threaded rod (32). The limiting rod (10) is fixedly connected to the horizontal rods (13).

4. The anchor pull-out force detection device according to claim 3, characterized in that, An arc-shaped abutment plate (11) is fixedly connected to one end of the limiting rod (10) away from the horizontal rod (13).

5. The anchor bolt pull-out force detection device according to claim 4, characterized in that, The connecting assembly (9) includes a first inclined block (91) fixedly connected to the end of the limiting frame (6), and a second inclined block (92) fixedly connected to the horizontal rod (13). The first inclined block (91) and the second inclined block (92) are parallel to each other. The first inclined block (91) and the second inclined block (92) abut against each other and are provided with the same connecting bolt (93). The connecting bolt (93) is threaded with an abutting nut (94), and the abutting nut (94) abuts against the side wall of the lower part of the second inclined block (92).

6. The anchor bolt pull-out force detection device according to claim 5, characterized in that, The first inclined block (91) and the second inclined block (92) are both provided with sliding holes (911), and the connecting bolt (93) is placed in the sliding holes (911).

7. The anchor bolt pull-out force detection device according to claim 6, characterized in that, A support leg (12) is fixedly connected to the horizontal bar (13).

8. The anchor bolt pull-out force detection device according to claim 2, characterized in that, The insert (71) is configured as a square block, and the slot (321) is configured as a square groove adapted to the size of the square block.

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