Anchorage rod puller with anti-broken and anti-injury mechanism

Abstract

The utility model discloses an anchor rod pull-out tester with anti-breaking and accidental injury mechanism belongs to anchor rod quality inspection field, and the top surface of tension hydraulic cylinder is opened a groove, and the top of tension hydraulic cylinder is equipped with the hexagon nut corresponding with the threaded column of anchor rod top -end, and the bottom side welding of hexagon nut has the connecting ring, and the lower part of connecting ring is inserted in the groove of tension hydraulic cylinder top surface, and the outer wall of connecting ring in groove is equipped with the annular groove, and the outer wall of tension hydraulic cylinder 31 groove that is in contact with annular groove is equipped with a plurality of through -holes that insert the locating pin, and the locating pin passes through tension hydraulic cylinder through -hole and annular groove cavity and fixes tension hydraulic cylinder with hexagon nut.

Description

Technical Field

[0001] This utility model relates to the field of anchor bolt quality inspection, specifically to an anchor bolt pull-out instrument with a mechanism to prevent accidental breakage and damage. Background Technology

[0002] Rock bolts are a fundamental component of roadway support in modern coal mines. They reinforce the surrounding rock of the roadway, allowing the rock to support itself. Through the longitudinal tensile force of the rock bolt, they overcome the disadvantage that the tensile strength of the rock and soil is far lower than its compressive strength. Superficially, this restricts the rock and soil from separating from the original mass, but macroscopically, it increases the cohesion of the rock and soil. Therefore, the quality and safety of rock bolts are related to the safety of the entire project. For this reason, before installation, rock bolts need to undergo pull-out quality testing.

[0003] Existing anchor bolt quality testing typically uses an anchor bolt pull-out tester. After the tensioning hydraulic cylinder is fitted onto the anchor bolt, its bottom surface rests on a reaction support frame, which is then placed flat on the rock stratum where the anchor bolt is located. This ensures the stability of the base end of the tensioning hydraulic cylinder during operation. The anchor bolt is connected to the inner wall of the tensioning hydraulic cylinder via an anchor. The hydraulic oil required for the tensioning hydraulic cylinder is manually supplied by a manual oil pump, and the pressure is monitored through a corresponding display.

[0004] During the quality inspection process, most anchor bolts require personnel to be evacuated before pressure is applied to prevent debris from the anchor bolt from injuring nearby personnel when it breaks. Furthermore, the threaded end of the anchor bolt, where the anchor is fixed, is highly susceptible to damage to nearby equipment due to the kinetic energy generated when it breaks. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides an anchor bolt puller with an anti-breakage and accidental injury mechanism, which prevents the threaded end of the anchor bolt from flying off due to the jacking force generated by the tensioning hydraulic cylinder when the anchor bolt breaks.

[0006] This invention is implemented as follows: an anchor bolt pull-out device with an anti-breakage and accidental injury mechanism. The anchor bolt pull-out device includes a tensioning hydraulic cylinder fitted onto the anchor bolt, a manual oil pump providing hydraulic power, and a pressure display. The manual oil pump is connected to the tensioning hydraulic cylinder via a high-pressure oil pipe, and the display is connected to one side of the high-pressure oil pipe. The tensioning hydraulic cylinder is connected to the side wall of the anchor bolt via an anchor. The anchor passes through an internal through-hole of the tensioning hydraulic cylinder. A groove is formed on the top surface of the tensioning hydraulic cylinder. A hexagonal nut corresponding to the threaded post at the top of the anchor bolt is provided on the top of the tensioning hydraulic cylinder. A connecting ring is welded to the bottom side of the hexagonal nut. The lower part of the connecting ring is inserted into the groove on the top surface of the tensioning hydraulic cylinder. An annular groove is provided on the outer wall of the connecting ring in the groove. Several through holes for inserting positioning pins are provided on the outer wall of the groove of the tensioning hydraulic cylinder that contacts the annular groove. The positioning pins pass through the through holes of the tensioning hydraulic cylinder and the cavity of the annular groove to fix the tensioning hydraulic cylinder and the hexagonal nut.

[0007] Furthermore, the inner diameter of the connecting ring is larger than the maximum diameter of the anchor.

[0008] Furthermore, the anchor includes a clamping plate that matches the anchor bolt model and an anchor sleeve that fixes the clamping plate.

[0009] Furthermore, the anchor bolt pull-out instrument is a JW series anchor bolt tension gauge.

[0010] Furthermore, a handle for easy carrying is provided on one side of the tensioning hydraulic cylinder.

[0011] Furthermore, the exposed rod of the anchor bolt is fitted with an auxiliary rubber sleeve to prevent breakage and splashing.

[0012] Furthermore, a reaction support frame for supporting the tensioning hydraulic cylinder is provided between the rock stratum and the bottom surface of the tensioning hydraulic cylinder.

[0013] The advantages of this invention compared to the prior art are as follows: This device screws a hexagonal nut onto the threaded post at the protruding end of the anchor rod, and welds a connecting ring onto the bottom surface of the hexagonal nut. The connecting ring passes through the top surface of the tensioning hydraulic cylinder. To ensure the fixed position of the positioning pin, an annular groove is provided on the outer wall of the connecting ring. The positioning pin passes through the outer wall of the groove on the top surface of the tensioning hydraulic cylinder and the cavity of the annular groove. This pin structure integrates the threaded post and the tensioning hydraulic cylinder into an integrated structure, which can effectively prevent the threaded post from splashing. Attached Figure Description

[0014] Figure 1 This is the overall structural diagram of the anchor bolt puller with an anti-breakage and accidental injury mechanism of this utility model.

[0015] Figure 2 This is a cross-sectional view of the overall structure of the anchor bolt puller with an anti-breakage and accidental injury mechanism of this utility model.

[0016] Figure 3 This is an exploded view of the overall structure of the anchor bolt puller with an anti-breakage and accidental injury mechanism of this utility model.

[0017] Figure 4 This is a structural diagram of the hexagonal nut of the anchor bolt puller with anti-breakage and accidental injury mechanism of this utility model.

[0018] In the diagram, 1. Anchor bolt; 2. Rock strata; 3. Anchor bolt pull-out device; 31. Tensioning hydraulic cylinder; 311. Handle; 32. Manual oil pump; 33. Display; 34. Anchor; 341. Wedge; 342. Anchor sleeve; 35. Auxiliary rubber sleeve; 4. Threaded post; 5. Hexagonal nut; 51. Connecting ring; 52. Annular groove; 53. Positioning pin; 6. Reaction support frame. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "both sides", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1 As shown in Figure 4, the anchor bolt puller of this invention with an anti-breakage and accidental injury mechanism includes a tensioning hydraulic cylinder 31 fitted onto the anchor bolt 1, a manual oil pump 32 providing hydraulic power, and a pressure display 33. The manual oil pump 32 is connected to the tensioning hydraulic cylinder 31 via a high-pressure oil pipe, and the display 33 is connected to one side of the high-pressure oil pipe. The tensioning hydraulic cylinder 31 is connected to the side wall of the anchor bolt 1 via an anchor 34, which passes through an internal through-hole in the tensioning hydraulic cylinder 31. A ring is formed on the top surface of the tensioning hydraulic cylinder 31. The top of the tensioning hydraulic cylinder 31 is provided with a hexagonal nut 5 corresponding to the threaded post 4 at the top of the anchor rod 1. A connecting ring 51 is welded to the bottom side of the hexagonal nut 5. The lower part of the connecting ring 51 is inserted into the groove on the top surface of the tensioning hydraulic cylinder 31. An annular groove 52 is provided on the outer wall of the connecting ring 51 in the groove. Several through holes for inserting positioning pins 53 are provided on the outer wall of the groove of the tensioning hydraulic cylinder 31 that contacts the annular groove 52. The positioning pins 53 pass through the through holes of the tensioning hydraulic cylinder 31 and the cavity of the annular groove 52 to fix the tensioning hydraulic cylinder 31 and the hexagonal nut 5.

[0023] Furthermore, the inner diameter of the connecting ring 51 is greater than the maximum diameter of the anchor 34.

[0024] Furthermore, the anchor 34 is characterized in that it includes a clamp 341 that matches the anchor rod model 1 and an anchor sleeve 342 that fixes the clamp 341.

[0025] Furthermore, the anchor bolt pull-out instrument 3 is a JW series anchor bolt tension gauge.

[0026] Furthermore, a handle 311 for easy carrying is provided on one side of the tensioning hydraulic cylinder 31.

[0027] Furthermore, the exposed rod of the anchor bolt 1 is fitted with an auxiliary rubber sleeve 35 to prevent breakage and splashing.

[0028] Furthermore, a reaction support frame 6 for supporting the tensioning hydraulic cylinder 31 is provided between the rock layer 2 and the bottom surface of the tensioning hydraulic cylinder 31.

[0029] In order to test the strength of anchor bolt 1, after anchor bolt 1 is driven into rock layer 2, a partial anchor bolt 1 will be sampled and tested using anchor bolt pull-out tester 3. The anchor bolt pull-out tester 3 is usually a JW series anchor bolt tension gauge.

[0030] The anchor bolt pull-out device 3 mainly consists of a tensioning hydraulic cylinder 31 fitted onto the anchor bolt 1, a manual oil pump 32 providing hydraulic power, and a pressure display 33. The manual oil pump 32 is connected to the tensioning hydraulic cylinder 31 via a high-pressure oil pipe, and the display 33 is connected to one side of the high-pressure oil pipe. The display 33 is typically a hydraulic sensor display and is installed at the output end of the manual oil pump 32. The tensioning hydraulic cylinder 31 is connected to the side wall of the anchor bolt 1 via a standard anchor 34. The anchor 34 passes through the internal through-hole of the tensioning hydraulic cylinder 31. The anchor 34 includes a clamp 341 matching the anchor bolt 1 model and an anchor sleeve 342 for fixing the clamp 341. The clamp 341 clamps the outer end of the anchor bolt 1. On the stripes; under the top force of the tensioning hydraulic cylinder 31, the clamping plate 341 clamps the anchor rod 1 and presses it upward, thereby completing the pull-out test of the anchor rod 1. In order to ensure the stability of the base of the tensioning hydraulic cylinder 31, a reaction support frame 6 is provided between the rock layer 2 and the bottom surface of the tensioning hydraulic cylinder 31 to support the tensioning hydraulic cylinder 31. The reaction support frame 6 stabilizes the base of the tensioning hydraulic cylinder 31 and ensures the accuracy of the test. The function of the reaction support frame 6 is to ensure the stability of the bottom surface of the tensioning hydraulic cylinder 31. The stability of the base of the tensioning hydraulic cylinder 31 can be ensured by laying hard and pressure-resistant steel plates or corresponding brackets. These auxiliary components of the reaction support frame 6 are existing technologies, so they will not be described in detail in this article.

[0031] To prevent debris from damaging the inner wall of the tensioning hydraulic cylinder 31 when the anchor rod 1 breaks in the middle, an auxiliary rubber sleeve 35 is fitted on the exposed rod of the anchor rod 1 to prevent fragmentation. This ensures that the fragments from the broken section do not spread over a large area. To prevent the threaded post 4 at the top of the anchor rod 1 from splashing, a hexagonal nut 5 corresponding to the threaded post 4 is provided on the top of the tensioning hydraulic cylinder 31, and a connecting ring 51 is welded to the bottom side of the hexagonal nut 5. The lower part of the connecting ring 51 is inserted into the groove on the top surface of the tensioning hydraulic cylinder 31. To facilitate the fixing of the connecting ring 51 to the groove on the top surface of the tensioning hydraulic cylinder 31, an annular groove 52 is provided on the connecting ring 51. Several positioning pins 53 are provided on the side of the groove on the top surface of the tensioning hydraulic cylinder 31, passing through the cavity of the tensioning hydraulic cylinder 31 and the annular groove 52. The position of the connecting ring 51 is fixed by these positioning pins 53, and the connection error of the positioning pins 53 can be ensured by the annular groove 52.

[0032] To prevent the connecting ring 51 from affecting the use of the anchor 34, the inner diameter of the connecting ring 51 is larger than the maximum diameter of the anchor 34. In order to facilitate the installation of the tensioning hydraulic cylinder 31, a handle 311 for easy carrying is provided on one side of the tensioning hydraulic cylinder 31.

[0033] In a specific implementation of this utility model, an auxiliary rubber sleeve 35 is fitted onto the anchor rod 1 exposed in the rock layer 2. Then, a reaction support frame 6 is laid on the rock layer 2. Next, a tensioning hydraulic cylinder 31 is fitted onto the anchor rod 1 and fixed by an anchor 34 that matches the anchor rod 1. Then, a hexagonal nut 5 is screwed onto the threaded post 4 at the top of the anchor rod 1, so that the annular groove 52 is located in the groove on the top surface of the tensioning hydraulic cylinder 31. Then, a positioning pin 53 is inserted into the side hole of the tensioning hydraulic cylinder 31, and the top of the positioning pin 53 is locked in the annular groove 52. To facilitate the removal and placement of the positioning pin 53, a lifting ring is provided on the outer wall end of the positioning pin 53, wherein the lifting ring is used to facilitate the disassembly of the positioning pin 53.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anchor bolt pull-out device with an anti-breakage and accidental injury mechanism, the anchor bolt pull-out device (3) includes a tensioning hydraulic cylinder (31) sleeved on the anchor bolt (1), a manual oil pump (32) providing hydraulic power, and a pressure display (33). The manual oil pump (32) is connected to the tensioning hydraulic cylinder (31) through a high-pressure oil pipe, and the display (33) is connected to one side of the high-pressure oil pipe. The tensioning hydraulic cylinder (31) is connected to the side wall of the anchor bolt (1) through an anchor (34), and the anchor (34) passes through the internal through hole of the tensioning hydraulic cylinder (31). The device is characterized in that... The top surface of the tensioning hydraulic cylinder (31) has a groove. The top of the tensioning hydraulic cylinder (31) is provided with a hexagonal nut (5) corresponding to the threaded post (4) at the top of the anchor rod (1). A connecting ring (51) is welded to the bottom side of the hexagonal nut (5). The lower part of the connecting ring (51) is inserted into the groove on the top surface of the tensioning hydraulic cylinder (31). The outer wall of the connecting ring (51) in the groove is provided with an annular groove (52). The outer wall of the groove of the tensioning hydraulic cylinder (31) in contact with the annular groove (52) is provided with several through holes for inserting positioning pins (53). The positioning pins (53) pass through the through holes of the tensioning hydraulic cylinder (31) and the cavity of the annular groove (52) to fix the tensioning hydraulic cylinder (31) and the hexagonal nut (5).

2. The anchor bolt puller with anti-breakage and accidental injury mechanism according to claim 1, characterized in that, The inner diameter of the connecting ring (51) is greater than the maximum diameter of the anchor (34).

3. The anchor bolt puller with anti-breakage and accidental injury mechanism according to claim 1, characterized in that, The anchor (34) includes a wedge (341) that matches the model of the anchor (1) and an anchor sleeve (342) that fixes the wedge (341).

4. The anchor bolt puller with anti-breakage and accidental injury mechanism according to claim 1, characterized in that, The anchor pull-out instrument (3) is a JW series anchor pull-out gauge.

5. The anchor bolt puller with anti-breakage and accidental injury mechanism according to claim 1, characterized in that, The tensioning hydraulic cylinder (31) is provided with a handle (311) on one side for easy carrying.

6. The anchor bolt puller with anti-breakage and accidental injury mechanism according to claim 1, characterized in that, The exposed rod of the anchor bolt (1) is fitted with an auxiliary rubber sleeve (35) to prevent breakage and splashing.

7. The anchor bolt puller with anti-breakage and accidental injury mechanism according to claim 1, characterized in that, A reaction support frame (6) is provided between the rock stratum (2) and the bottom surface of the tensioning hydraulic cylinder (31) to support the tensioning hydraulic cylinder (31).

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