Anchor cable and anchor rod drawing test device

Abstract

The invention relates to the technical field of drawing testing, in particular to an anchor cable and anchor rod drawing testing device. According to the technical scheme, the loading rate adjusting part comprises an outer cylinder, arc-shaped clamping plates, a first toothed plate, a first gear, a first flow valve and a hydraulic clamp part, the multiple arc-shaped clamping plates are slidably connected into the outer cylinder, the hydraulic clamp part is arranged on the outer arc surfaces of the arc-shaped clamping plates through round rods, the first toothed plate is arranged at the bottom of the hydraulic clamp part, and the first gear is arranged on the first toothed plate. A first flow valve is fixedly installed on the inner wall of the outer cylinder, and a first gear connected with the first toothed plate in an engaged mode is fixedly installed at the end of the first flow valve. For an anchor rod body with a small diameter and relatively low strength, the loading rate of the hydraulic jack is reduced, and the situation that the limit drawing force of the anchor rod body cannot be accurately obtained due to the fact that the anchor rod body is damaged is prevented; for an anchor rod body with a large diameter and high strength, the loading rate of the hydraulic jack is increased, and the detection efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pull-out testing, and in particular to a pull-out testing device for an anchor cable or anchor rod. Background Art

[0002] The anchor cable protection sleeve is a device used to protect the anchor cable. Through the cooperation of the sleeve and the wire protection rope, when the anchor cable is subjected to lateral impact force, it can provide a lateral buffer to prevent the anchor cable from tilting; when the anchor cable breaks, it can play a buffering role to effectively reduce the impact caused by sudden breakage, thereby avoiding accidents and injuries.

[0003] According to the specific test equipment and methods, install auxiliary components such as fixing rings and safety rings. If a pull-out test machine with a safety ring is used, put the safety ring into the anchor rod or anchor cable, and install and adjust it as required. When conducting a destructive test, continue to pressurize until the anchor rod or anchor cable is pulled out or shows obvious signs of damage, and record the maximum tensile force at this time.

[0004] In the patent document with publication number CN115597974A, an anchor puller is proposed, which includes: a reaction frame, a jack, a conversion part and an anchor ring. The reaction frame is supported on the ground, the jack is arranged on the top of the reaction frame and cooperates with the driving part, the conversion part is connected to the jack through a transmission part, the anchor ring is fixedly connected to the conversion part, the anchor ring is suitable for being sleeved on the outer peripheral surface of the anchor rod, the anchor ring includes a body and a clip, a through hole is formed on the body, at least a part of the clip is matched in the through hole, the wall thickness of one end of the through hole is L1, and the wall thickness of the other end is L2, satisfying: 1 / 2≤L1 / L2≤4 / 5. Thus, the anchor puller can apply a pulling force to the anchor rod, so as to facilitate the detection of the pulling force of the anchor rod to be tested, and the anchor ring can provide a large force to ensure that the anchor rod is pulled out, so that the anchor puller has good structural strength and reliability. At the same time, by setting transmission parts and conversion parts, it can be adjusted according to the anchor rods of different lengths exposed on the ground to improve the application range of the anchor rod puller.

[0005] The force for pulling out the anchor rod is applied by a jack, and the force loading rate of the jack is constant. For anchor rods with small diameter and relatively low strength, the loading rate is too fast, which will cause the anchor rod to be damaged and its ultimate pull-out force cannot be accurately obtained. For anchor rods with large diameter and high strength, the loading rate is slow and the detection efficiency is low. Summary of the invention

[0006] The purpose of the present invention is to provide an anchor cable and anchor rod pulling test device to solve the problem of constant loading rate for anchor rods with different diameters in the background technology.

[0007] The technical solution of the present invention is an anchor cable and anchor rod pulling test device, comprising two symmetrically arranged bases, a hydraulic jack is fixedly installed on the top of the base, and a top platform is fixedly installed on the top of the hydraulic jack, characterized in that:

[0008] A loading rate adjusting member, comprising an outer cylinder, an arc-shaped clamping plate, a first tooth plate, a first gear, a first flow valve and a hydraulic clamping member, wherein a plurality of arc-shaped clamping plates are slidably connected inside the outer cylinder, a hydraulic clamping member is arranged on the outer arc surface of the arc-shaped clamping plate through a round rod, a first tooth plate is arranged at the bottom of the hydraulic spacing member, a first flow valve is fixedly installed on the inner wall of the outer cylinder, and a first gear meshingly connected to the first tooth plate is fixedly installed on the end of the first flow valve;

[0009] The bottom of the outer cylinder is fixedly connected to the base, and the plurality of arc-shaped clamping plates are distributed in a circular manner at equal angles inside the outer cylinder. An anchor rod body is clamped at the center of the plurality of arc-shaped clamping plates, and the first flow valve is connected to the hydraulic jack through a hydraulic pipe;

[0010] A rate slowing component for gradually slowing down the loading rate of the hydraulic jack is arranged at the bottom of the top platform.

[0011] Optionally, an inner tube is fixedly mounted on the inner wall of the outer tube, and the sides of the top platform, the outer tube and the inner tube are all provided with notches, and the anchor rod body enters the center of the plurality of arc-shaped clamping plates through the notches.

[0012] Optionally, the middle part of the arc-shaped clamp is slidably connected to a contact block, a return spring is elastically connected between the end of the contact block and the arc-shaped clamp, a push-type stop valve is arranged inside the hydraulic clamp, the push-type stop valve and the contact block are connected by a linkage rod, the top of the hydraulic clamp is fixedly installed with a first hydraulic push rod inside the top of the outer cylinder, and the push-type stop valve is connected to the first hydraulic push rod through a hydraulic pipe.

[0013] Optionally, the hydraulic clamp includes an inner pressure plate and an outer extrusion plate, the inner arc surface of the inner pressure plate is fixedly connected to an arc-shaped clamping plate by a round rod, the arc-shaped clamping plate and the inner pressure plate are respectively located on the inner and outer sides of the inner cylinder, the inner pressure plate is provided with an inclined surface on the side close to the outer extrusion plate, the inner inclined surface of the outer extrusion plate is in contact with the outer inclined surface of the inner pressure plate, the top of the outer extrusion plate is fixedly connected to the first hydraulic push rod, and the bottom of the outer extrusion plate is fixedly installed with a first tooth plate.

[0014] Optionally, the rate slowing component includes a support block, a swivel column, a spiral track, a T-block, a conversion piece and a second flow valve. The support block is fixedly installed on the bottom of the top platform, and the side of the support block is rotated to connect to the swivel column. A spiral track is provided on the swivel column, and the inner sliding connection of the spiral track is a T-block. A conversion piece is provided on the side of the T-block, and the side of the conversion piece is connected to the second flow valve. The second flow valve is fixedly installed on the bottom of the top platform, and the second flow valve is connected to the hydraulic jack through a hydraulic pipe.

[0015] Optionally, two spiral columns are provided and are symmetrical about the center axis of the support block. The spiral tracks on the two spiral columns are in opposite directions. The pitch of the spiral track thereon gradually decreases from one end to the other end of the spiral column. The end shaft of the T-shaped block is connected to a ball bearing, which rolls along the spiral track.

[0016] Optionally, a second gear is fixedly installed on the ends of the two rotating columns, the two second gears are meshed with each other, the rotation directions of the two rotating columns are opposite, the side of the second gear is meshed with a second tooth plate, and the bottom of the second tooth plate is fixedly connected to the fixed part of the hydraulic jack.

[0017] Optionally, the conversion member includes a third tooth plate and a third gear, the third tooth plate slides in the middle of the support block, the end of the third tooth plate is fixedly connected to the T-shaped block, the bottom of the third tooth plate is meshed and connected to the third gear, and the center of the third gear is fixedly connected to the second flow valve.

[0018] Optionally, a contact surface adjustment piece is provided at the outer arc surface of the arc-shaped clamping plate, and the contact surface adjustment piece includes an arc block, an arc plate and an electric push rod. A plurality of arc blocks are fixedly installed at the inner arc surface of the arc plate. A groove is provided in the middle portion of the arc-shaped clamping plate, and the arc block is inserted into the groove of the arc-shaped clamping plate. An electric push rod is fixedly installed at the outer arc surface of the arc plate, and an end of the electric push rod is fixedly installed on the inner arc surface of the inner cylinder. Rubber pads are fixedly installed on the upper and lower sides of the arc block.

[0019] Optionally, a plurality of the arc blocks are equidistantly distributed in a straight line along a vertical line, a round rod between the arc-shaped clamping plate and the inner pressure plate penetrates the arc plate, and the arc plate is staggered with the arc blocks.

[0020] Compared with the prior art, this application has the following beneficial technical effects:

[0021] 1. When the arc-shaped clamping plate of the present invention clamps the anchor body, the displacement of the outer extrusion plate drives the first tooth plate to move, so that the first flow valve rotates to adjust the internal opening size of the first flow valve. For anchor bodies with smaller diameters and relatively lower strength, the loading rate of the hydraulic jack is slowed down to prevent the anchor body from being damaged and its ultimate pull-out force cannot be accurately obtained; for anchor bodies with larger diameters and higher strength, the loading rate of the hydraulic jack is accelerated to improve the detection efficiency.

[0022] 2. In the present invention, as the hydraulic jack is extended, the top platform gradually rises, so that the rotary column rotates. Since the pitch of the spiral track gradually decreases, the moving speed of the third tooth plate is reduced, thereby gradually reducing the opening size in the second flow valve, and gradually reducing the flow rate of the hydraulic oil, that is, gradually reducing the lifting speed of the hydraulic jack. When pulling the anchor body with a larger diameter and higher strength, the initial loading rate is fast, and then the loading rate is gradually reduced, and the pulling is slow to obtain an accurate ultimate pulling force, and the initial loading rate is fast to speed up the detection efficiency.

[0023] 3. When clamping an anchor body with a smaller diameter and lower strength, the present invention clamps the anchor body through arc blocks and arc-shaped clamping plates, thereby increasing the contact surface and avoiding clamping off the anchor body; and when clamping an anchor body with a larger diameter and higher strength, the arc blocks and arc-shaped clamping plates are separated, so that the inner arc surface of the arc-shaped clamping plates forms edges and corners, and the anchor body is clamped by utilizing the edges and corners, so that the edges and corners of the arc-shaped clamping plates are embedded in the anchor body to increase friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Provide the overall structural schematic diagram of the present invention;

[0025] Figure 2 A schematic diagram of the outer cylinder structure of the present invention is provided;

[0026] Figure 3 A schematic diagram of the inner cylinder structure of the present invention is provided;

[0027] Figure 4 A schematic diagram of the structure of the inner pressure plate of the present invention is given;

[0028] Figure 5 A schematic diagram of the front and cross-sectional view of the outer cylinder structure of the present invention is given;

[0029] Figure 6 A schematic diagram of a front and cross-sectional view of the arc-shaped clamping plate structure of the present invention is given;

[0030] Figure 7 A schematic structural diagram of a second flow valve of the present invention is given;

[0031] Figure 8 A schematic top view of the spiral track structure of the present invention is given;

[0032] Fig. 9 A schematic diagram of the arc block structure of the present invention is given.

[0033] 1. Base; 2. Hydraulic jack; 3. Top platform; 4. Loading rate adjustment member; 41. Outer cylinder; 42. Inner cylinder; 43. Arc-shaped clamping plate; 44. Inner pressure plate; 45. First hydraulic push rod; 46. Outer extrusion plate; 47. Contact block; 48. Reset spring; 49. Push-type stop valve; 410. First tooth plate; 411. First gear; 412. First flow valve; 5. Anchor rod body; 6. Rate reduction assembly; 61. Second tooth plate; 62. Support block; 63. Swivel column; 64. Second gear; 65. Spiral track; 66. T-block; 67. Ball; 68. Third tooth plate; 69. Third gear; 610. Second flow valve; 7. Contact surface adjustment member; 71. Arc block; 72. Arc plate; 73. Electric push rod; 74. Rubber pad. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0035] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0036] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Embodiment 1: This embodiment provides an anchor cable and anchor rod pulling test device, such as Figure 1 As shown, it comprises two symmetrically arranged bottom platforms 1, a hydraulic jack 2 is fixedly installed on the top of the bottom platform 1, a top platform 3 is fixedly installed on the top of the hydraulic jack 2, a loading rate adjusting member 4 is arranged at the top center of the top platform 3, and an anchor rod body 5 is clamped at the center of the loading rate adjusting member 4. The top platform 3 is pushed upward by extending the hydraulic jack 2, so that the loading rate adjusting member 4 pulls the anchor rod body 5 upward.

[0040] like Figures 2 to 4 As shown, the loading rate adjustment member 4 includes an outer cylinder 41, an arc-shaped clamping plate 43, a first tooth plate 410, a first gear 411, a first flow valve 412 and a hydraulic clamping member. The bottom of the outer cylinder 41 is fixedly connected to the base 1, and multiple arc-shaped clamping plates 43 are slidably connected inside the outer cylinder 41. The inner wall of the outer cylinder 41 is fixedly installed with an inner cylinder 42. The sides of the top platform 3, the outer cylinder 41 and the inner cylinder 42 are all provided with notches. The anchor rod body 5 enters the center of the multiple arc-shaped clamping plates 43 from the notch. The outer arc surface of the arc-shaped clamping plate 43 is provided with a hydraulic clamping member through a round rod. Multiple arc-shaped clamping plates 43 are distributed in a circular shape with equal angles inside the outer cylinder 41, and the center of the multiple arc-shaped clamping plates 43 clamps the anchor rod body 5.

[0041] There are gaps between the multiple arc-shaped clamps 43, and the anchor rod body 5 enters the center of the outer tube 41 from the notch and the gap between two adjacent arc-shaped clamps 43, and the arc-shaped clamps 43 are squeezed by the hydraulic clamp to move toward the center of the outer tube 41 and clamp the anchor rod body 5.

[0042] like Figure 5 and Figure 6 As shown, the hydraulic clamp includes an inner pressure plate 44 and an outer extrusion plate 46. The inner arc surface of the inner pressure plate 44 is fixedly connected to the arc clamp 43 by a round rod. The arc clamp 43 and the inner pressure plate 44 are respectively located on the inner and outer sides of the inner tube 42. The inner pressure plate 44 is provided with an inclined surface on one side close to the outer extrusion plate 46. The inner inclined surface of the outer extrusion plate 46 is in contact with the outer inclined surface of the inner pressure plate 44. The top of the outer extrusion plate 46 is fixedly connected to the first hydraulic push rod 45.

[0043] The first hydraulic push rod 45 is extended to move the outer extrusion plate 46 downward, and the inner inclined surface of the outer extrusion plate 46 is used to squeeze the inner pressure plate 44, so that the multiple arc-shaped clamping plates 43 gather toward the center of the outer cylinder 41, thereby clamping the first hydraulic push rod 45.

[0044] The middle part of the arc-shaped clamping plate 43 is slidably connected to the contact block 47, and a return spring 48 is elastically connected between the end of the contact block 47 and the arc-shaped clamping plate 43. A push-type stop valve 49 is arranged inside the outer extrusion plate 46. The push-type stop valve 49 is connected to the contact block 47 through a linkage rod, and the push-type stop valve 49 is connected to the first hydraulic push rod 45 through a hydraulic pipe.

[0045] After the inner arc surface of the arc-shaped clamping plate 43 completely contacts the anchor rod body 5, the contact block 47 in the middle of the arc-shaped clamping plate 43 is completely pressed into the interior of the arc-shaped clamping plate 43, and the contact block 47 uses a round rod to squeeze the press-type stop valve 49. The press-type stop valve 49 cuts off the flow of hydraulic oil in the hydraulic pipe, thereby stopping the further extension of the first hydraulic push rod 45, and preventing the arc-shaped clamping plate 43 from excessively clamping the anchor rod body 5.

[0046] The bottom of the outer extrusion plate 46 is fixedly connected to the first tooth plate 410, and the inner wall of the outer cylinder 41 is fixedly installed with a first flow valve 412. The first flow valve 412 is connected to the hydraulic jack 2 through a hydraulic pipe. The end of the first flow valve 412 is fixedly installed with a first gear 411 meshing with the first tooth plate 410. The outer extrusion plate 46 moves downward to drive the first tooth plate 410 to move. The first tooth plate 410 causes the first gear 411 to rotate and adjust the size of the internal opening of the first flow valve 412, thereby controlling the flow rate of the hydraulic oil, that is, adjusting the extension speed of the hydraulic jack 2.

[0047] In this embodiment, when the arc-shaped clamping plate 43 clamps the anchor body 5, the displacement of the outer extrusion plate 46 drives the first tooth plate 410 to move, so that the first flow valve 412 rotates to adjust the internal opening size of the first flow valve 412. For anchor bodies 5 with smaller diameters and relatively lower strength, the loading rate of the hydraulic jack 2 is slowed down to prevent the anchor body 5 from being damaged and its ultimate pull-out force from being accurately obtained; for anchor bodies 5 with larger diameters and higher strength, the loading rate of the hydraulic jack 2 is accelerated to improve the detection efficiency.

[0048] Embodiment 2: Based on Embodiment 1, this embodiment proposes an anchor cable and anchor rod pulling test device, such as Figure 1 and Figure 7As shown, a rate-reducing assembly 6 for gradually reducing the loading rate of the hydraulic jack 2 is provided at the bottom of the top platform 3. The rate-reducing assembly 6 includes a support block 62, a swivel column 63, a spiral track 65, a T-block 66, a conversion piece and a second flow valve 610. The support block 62 is fixedly installed at the bottom of the top platform 3. The side of the support block 62 is rotated to connect the swivel column 63. The spiral track 65 is provided on the swivel column 63. Two swivel columns 63 are provided and are symmetrical about the center axis of the support block 62. The spiral tracks 65 on the two swivel columns 63 are in opposite directions.

[0049] like Figure 7 and Figure 8 As shown, the ends of the two rotating columns 63 are fixedly mounted with second gears 64, the two second gears 64 are meshed with each other, the rotation directions of the two rotating columns 63 are opposite, the sides of the second gears 64 are meshed with the second toothed plate 61, and the bottom of the second toothed plate 61 is fixedly connected to the fixed part of the hydraulic jack 2.

[0050] By rotating the rotating column 63 and using the second gear 64 to make the other rotating column 63 rotate synchronously, the two rotating columns 63 rotate in opposite directions, and the end shaft of the T-shaped block 66 is connected to a ball 67, which rolls along the spiral track 65. The rotation of the spiral track 65 makes the ball 67 roll, so that the T-shaped block 66 moves.

[0051] A conversion member is arranged on the side of the T-shaped block 66, and the conversion member includes a third tooth plate 68 and a third gear 69. The third tooth plate 68 slides in the middle of the support block 62, and the end of the third tooth plate 68 is fixedly connected to the T-shaped block 66. The bottom of the third tooth plate 68 is meshedly connected to the third gear 69, and the center of the third gear 69 is fixedly connected to the second flow valve 610. The second flow valve 610 is fixedly installed at the bottom of the top platform 3, and the second flow valve 610 is connected to the hydraulic jack 2 through a hydraulic pipe.

[0052] As the top platform 3 rises, the top platform 3 drives the second gear 64 to move upward, and the second gear 64 is affected by the second tooth plate 61 to rotate, thereby rotating the rotary column 63, and the spiral track 65 on the rotary column 63 uses the ball 67 to move the T-block 66, and the T-block 66 drives the third tooth plate 68 to move, and the third tooth plate 68 and the support block 62 cooperate to prevent the third tooth plate 68 and the T-block 66 from rotating. The movement of the third tooth plate 68 causes the third gear 69 to rotate, thereby reducing the circulation speed of the hydraulic oil at the second flow valve 610.

[0053] like Figure 8As shown, the pitch of the spiral track 65 on the rotating column 63 gradually decreases from one end to the other end. During the rotation of the T-shaped block 66, the pitch of the spiral track 65 gradually decreases, thereby reducing the horizontal displacement speed of the ball 67, thereby gradually reducing the moving speed of the T-shaped block 66. The maximum flow rate of the first flow valve 412 is the same as the maximum flow rate of the second flow valve 610.

[0054] In this embodiment, as the hydraulic jack 2 is extended, the top platform 3 gradually rises, so that the spiral column 63 rotates. Since the pitch of the spiral track 65 gradually decreases, the moving speed of the third tooth plate 68 is reduced, thereby gradually reducing the opening size in the second flow valve 610, and gradually reducing the flow rate of the hydraulic oil, that is, gradually reducing the lifting speed of the hydraulic jack 2. When pulling the anchor body 5 with a larger diameter and higher strength, the initial loading rate is fast, and then the loading rate is gradually reduced, and the pulling is slow to obtain an accurate ultimate pulling force, and the initial loading rate is fast to speed up the detection efficiency.

[0055] Example 3

[0056] Based on the above-mentioned embodiment 1 or 2, this embodiment proposes an anchor cable anchor rod pulling test device, such as Figure 6 and Fig. 9 As shown, a contact surface adjustment member 7 is provided at the outer arc surface of the arc clamping plate 43, and the contact surface adjustment member 7 includes an arc block 71, an arc plate 72 and an electric push rod 73. A plurality of arc blocks 71 are fixedly installed at the inner arc surface of the arc plate 72. A groove is provided in the middle of the arc clamping plate 43, and the arc block 71 is inserted into the groove of the arc clamping plate 43. The electric push rod 73 is fixedly installed at the outer arc surface of the arc plate 72, and the end of the electric push rod 73 is fixedly installed on the inner arc surface of the inner cylinder 42. Rubber pads 74 are fixedly installed on the upper and lower sides of the arc block 71.

[0057] The arc block 71 is clamped in the arc clamping plate 43 through the rubber pad 74, and the anchor rod body 5 is clamped by the arc block 71 and the arc clamping plate 43. When the anchor rod body 5 with a larger diameter and higher strength is clamped, the rubber pad 74 contracts to separate the arc block 71 and the arc clamping plate 43, so that the inner arc surface of the arc clamping plate 43 forms an edge, and the anchor rod body 5 is clamped by the edge.

[0058] The plurality of arc blocks 71 are equidistantly distributed in a straight line along a vertical line. The round rod between the arc clamping plate 43 and the inner pressure plate 44 penetrates the arc plate 72. The arc plate 72 and the arc blocks 71 are staggered to avoid being stuck.

[0059] In this embodiment, when clamping the anchor body 5 with a smaller diameter and lower strength, the anchor body 5 is clamped by the arc block 71 and the arc clamping plate 43 to increase the contact surface and avoid clamping off the anchor body 5; when clamping the anchor body 5 with a larger diameter and higher strength, the arc block 71 and the arc clamping plate 43 are separated, so that the inner arc surface of the arc clamping plate 43 forms edges and corners, and the anchor body 5 is clamped by using the edges and corners, so that the edges and corners of the arc clamping plate 43 are embedded in the anchor body 5 to increase the friction force.

[0060] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An anchor cable and anchor rod pulling test device, comprising: Two base platforms (1) are symmetrically arranged, a hydraulic jack (2) is fixedly mounted on the top of the base platform (1), and a top platform (3) is fixedly mounted on the top of the hydraulic jack (2), characterized in that: A loading rate adjusting member (4), comprising an outer cylinder (41), an arc-shaped clamping plate (43), a first toothed plate (410), a first gear (411), a first flow valve (412) and a hydraulic clamping member, wherein a plurality of arc-shaped clamping plates (43) are slidably connected inside the outer cylinder (41), a hydraulic clamping member is provided on the outer arc surface of the arc-shaped clamping plate (43) via a round rod, a first toothed plate (410) is provided at the bottom of the hydraulic spacing member, a first flow valve (412) is fixedly mounted on the inner wall of the outer cylinder (41), and a first gear (411) meshingly connected to the first toothed plate (410) is fixedly mounted on the end of the first flow valve (412); The bottom of the outer cylinder (41) is fixedly connected to the base (1); a plurality of arc-shaped clamping plates (43) are distributed in an annular manner at equal angles inside the outer cylinder (41); an anchor rod body (5) is clamped at the center of the plurality of arc-shaped clamping plates (43); and the first flow valve (412) is connected to the hydraulic jack (2) via a hydraulic pipe; The bottom of the top platform (3) is provided with a rate reduction component (6) for gradually reducing the loading rate of the hydraulic jack (2).

2. The anchor cable and anchor rod pulling test device according to claim 1, characterized in that: An inner cylinder (42) is fixedly mounted on the inner wall of the outer cylinder (41), and the sides of the top platform (3), the outer cylinder (41) and the inner cylinder (42) are all provided with notches, and the anchor rod body (5) enters the center of the plurality of arc-shaped clamping plates (43) through the notches.

3. The anchor cable and anchor rod pulling test device according to claim 2, characterized in that: The middle part of the arc-shaped clamping plate (43) is slidably connected to the contact block (47), and a return spring (48) is elastically connected between the end of the contact block (47) and the arc-shaped clamping plate (43). A push-type stop valve (49) is arranged inside the hydraulic clamping member, and the push-type stop valve (49) is connected to the contact block (47) through a linkage rod. The top of the hydraulic clamping member is fixedly installed with a first hydraulic push rod (45) fixed inside the top of the outer cylinder (41), and the push-type stop valve (49) is connected to the first hydraulic push rod (45) through a hydraulic pipe.

4. The anchor cable and anchor rod pulling test device according to claim 3, characterized in that: The hydraulic clamp comprises an inner pressure plate (44) and an outer extrusion plate (46); the inner arc surface of the inner pressure plate (44) is fixedly connected to an arc clamping plate (43) via a round rod; the arc clamping plate (43) and the inner pressure plate (44) are respectively located on the inner and outer sides of the inner tube (42); a slope is provided on one side of the inner pressure plate (44) close to the outer extrusion plate (46); the inner slope of the outer extrusion plate (46) contacts the outer slope of the inner pressure plate (44); the top of the outer extrusion plate (46) is fixedly connected to the first hydraulic push rod (45); and the bottom of the outer extrusion plate (46) is fixedly mounted with a first tooth plate (410).

5. The anchor cable and anchor rod pulling test device according to claim 1, characterized in that: The rate reduction assembly (6) comprises a support block (62), a swivel column (63), a spiral track (65), a T-shaped block (66), a conversion piece and a second flow valve (610). The support block (62) is fixedly installed at the bottom of the top platform (3). The side of the support block (62) is rotated to connect to the swivel column (63). The swivel column (63) is provided with a spiral track (65). The inner part of the spiral track (65) is slidably connected to the T-shaped block (66). The side of the T-shaped block (66) is provided with a conversion piece. The side of the conversion piece is connected to the second flow valve (610). The second flow valve (610) is fixedly installed at the bottom of the top platform (3). The second flow valve (610) is connected to the hydraulic jack (2) through a hydraulic pipe.

6. The anchor cable and anchor rod pulling test device according to claim 5, characterized in that: Two rotating columns (63) are provided and are symmetrical about the center axis of the support block (62). The spiral tracks (65) on the two rotating columns (63) are in opposite directions. From one end of the rotating column (63) to the other end, the pitch of the spiral track (65) thereon gradually decreases. The end shaft of the T-shaped block (66) is connected to a ball (67), and the ball (67) rolls along the spiral track (65).

7. The anchor cable and anchor rod pulling test device according to claim 6, characterized in that: A second gear (64) is fixedly mounted on the ends of the two rotating columns (63); the two second gears (64) are meshed with each other; the two rotating columns (63) rotate in opposite directions; the side of the second gear (64) is meshedly connected with a second toothed plate (61); the bottom of the second toothed plate (61) is fixedly connected to a fixed portion of the hydraulic jack (2).

8. The anchor cable and anchor rod pulling test device according to claim 7, characterized in that: The conversion member comprises a third tooth plate (68) and a third gear (69); the third tooth plate (68) slides in the middle of the support block (62); the end of the third tooth plate (68) is fixedly connected to the T-shaped block (66); the bottom of the third tooth plate (68) is meshedly connected to the third gear (69); and the center of the third gear (69) is fixedly connected to the second flow valve (610).

9. The anchor cable and anchor rod pulling test device according to claim 1, characterized in that: A contact surface adjustment member (7) is provided on the outer arc surface of the arc-shaped clamping plate (43), and the contact surface adjustment member (7) comprises an arc block (71), an arc plate (72) and an electric push rod (73). A plurality of arc blocks (71) are fixedly mounted on the inner arc surface of the arc plate (72). A groove is provided in the middle of the arc-shaped clamping plate (43), and the arc block (71) is inserted into the groove of the arc-shaped clamping plate (43). The electric push rod (73) is fixedly mounted on the outer arc surface of the arc plate (72), and the end of the electric push rod (73) is fixedly mounted on the inner arc surface of the inner cylinder (42). Rubber pads (74) are fixedly mounted on both upper and lower sides of the arc block (71).

10. The anchor cable and anchor rod pulling test device according to claim 9, characterized in that: The plurality of arc blocks (71) are distributed in a straight line at equal intervals along a vertical line, the round rod between the arc-shaped clamping plate (43) and the inner pressure plate (44) penetrates the arc plate (72), and the arc plate (72) and the arc blocks (71) are offset.

Images