Shield segment bolt pull-out test auxiliary clamp

Abstract

The utility model relates to the technical field of bolt detection, and provides a shield segment bolt pull-out test auxiliary clamp, which comprises a pull-out force tester main body, the back surface of the pull-out force tester main body is connected with a connecting line, and the back surface of the connecting line is connected with a control equipment main body. An electric telescopic rod is arranged in the drawing force tester main body; according to the bolt detection auxiliary equipment, by arranging the auxiliary structure, when a pull-out test needs to be carried out on a segment bolt, the clamping mechanism can penetrate through a round hole in the top of the bottom plate, then the pull-out force tester body is fixed through the auxiliary mechanism, and then the bottom plate is placed on the ground through four sets of supporting columns; according to the drawing force tester, a certain auxiliary supporting effect on the tester can be achieved when the drawing force tester main body is used for detection, so that the time that a worker finds parts all around for building is saved, the situation that the drawing force tester main body cannot be fixed due to the lack of the parts can be prevented, and the accuracy of a test result is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of bolt testing technology, specifically to an auxiliary fixture for bolt pull-out testing of tunnel segment bolts. Background Technology

[0002] Segment bolts are divided into circumferential and longitudinal bolts. In some designs, the circumferential and longitudinal bolts have the same specifications, while in other designs, two different specifications or even two different strength grades are used for the circumferential and longitudinal bolts. Generally speaking, the length of the circumferential segment bolts is longer than that of the longitudinal segment bolts.

[0003] Chinese patent discloses an auxiliary fixture for bolt pull-out testing of tunnel segment, publication number CN218725961U. The document describes a fixture comprising: a base, a channel steel structure, a triangular plate structure, with the rear right-angled side of the triangular plate structure installed to the base, the hypotenuse of the triangular plate structure installed to an inclined plate, and the bottom right-angled side of the triangular plate structure installed to the channel steel structure; an inclined plate, with its four corners connected to the channel steel structure, its front connected to a limiting structure, and its front also connected to a loading element; and a limiting structure installed at the middle of the front of the inclined plate, with the loading element nested inside the limiting structure. The advantages of this invention are: simple structure, easy installation and operation; and by installing the inclined plate and triangular plate, the bolt pull-out test can be performed... The load can be placed vertically on the inclined plate, and the position of the load can be adjusted and fixed by the limiting structure. The length of the channel steel can be adjusted by the mounting holes on the channel steel, which improves the accuracy of the test and the efficiency of the work. However, with the existing technology, when the staff conducts the pull-out test, the equipment will generate a certain stress. At this time, the pull-out equipment may tip over due to the force, which may lead to some errors in the test results. Therefore, before the test, the staff will build a fixed mechanism to assist the equipment test. However, the staff needs a certain amount of time to build it temporarily, and it cannot be built successfully if there are no parts on site. Therefore, it is necessary to design an auxiliary fixture for the pull-out test of shield tunnel segment bolts. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary fixture for the bolt pull-out test of tunnel segment, which solves the problems in related technologies.

[0005] The technical solution of this utility model is as follows:

[0006] An auxiliary fixture for bolt pull-out testing of tunnel boring machine segments includes a pull-out force tester body. A connecting line is connected to the back of the pull-out force tester body, and a control device body is connected to the back of the connecting line. The interior of the pull-out force tester body...

[0007] The instrument is equipped with an electric telescopic rod, and the output end of the electric telescopic rod is fixedly connected to a clamping mechanism. A base plate is provided below the main body of the pull-out force tester. An auxiliary mechanism is provided on the top of the base plate, and a support column is fixedly connected to the bottom of the base plate.

[0008] Preferably, the clamping mechanism includes a mounting plate, a servo motor, a lead screw, a slider, and a clamping plate. The output end of the electric telescopic rod is fixedly connected to the mounting plate, and a servo motor is provided on the side of the mounting plate. The output end of the servo motor is fixedly connected to the lead screw, and a slider is threadedly connected to the surface of the lead screw. A clamping plate is fixedly connected to the bottom of the slider.

[0009] Preferably, the auxiliary mechanism includes a support plate, a rotating shaft, a fastening nut, a rotating rod, a transmission column, a sliding plate, and a fixing plate. The support plate is fixedly connected to the top of the base plate, the rotating shaft passes through the top of the support plate, and the surface of the rotating shaft is threaded with a fastening nut. The rotating rod is fixedly connected to the surface of the rotating shaft below the fastening nut, and the transmission column is fixedly connected to the bottom of the rotating rod. The sliding plate is attached to the surface of the transmission column, and the fixing plate is fixedly connected to the top of the sliding plate.

[0010] Preferably, the top of the base plate has a circular hole, and four sets of support columns are provided.

[0011] Preferably, the surface of the lead screw is provided with two sets of threads in opposite directions, and both sets of threaded surfaces of the lead screw are engaged with sliders, and the bottom of both sets of sliders are fixedly connected with clamps.

[0012] Preferably, the bottom of the mounting plate has two sets of horizontal grooves that match the two sets of sliders respectively, and the two sets of sliders are respectively embedded in the two sets of horizontal grooves of the mounting plate and slidably connected to the mounting plate.

[0013] Preferably, the rotating shaft passes through the top of the support plate and is rotatably connected to the support plate and the bottom plate, and the rotating shaft is located at the center of the rotating rod.

[0014] Preferably, two sets of transmission columns and sliding plates are provided, and the two sets of transmission columns are respectively located at both ends of the rotating rod. The top of each set of sliding plates is provided with a transverse groove that matches the two sets of transmission columns, and the two sets of transmission columns are respectively embedded in the transverse grooves of the two sets of sliding plates and slidably connected to the sliding plates.

[0015] Preferably, the top of the base plate has two sets of sliding grooves that match the sliding plates respectively, and the two sets of sliding plates are respectively embedded in the two sets of sliding grooves on the top of the base plate and slidably connected to the base plate.

[0016] Preferably, the fixing plate is provided in two sets, and both sets of fixing plates are arranged in a semi-circular ring.

[0017] The beneficial effects of this utility model are:

[0018] 1. By setting up an auxiliary structure, when a pull-out test is required on the segment bolts, the clamping mechanism can be passed through the round hole at the top of the base plate, and then the main body of the pull-out force tester can be fixed by the auxiliary mechanism. Then, the base plate is placed on the ground by four sets of pillars, which can provide a certain auxiliary support for the instrument when the main body of the pull-out force tester is being tested. This saves the time of the staff to find parts to assemble, and also prevents the main body of the pull-out force tester from being unable to be fixed due to missing parts, thus ensuring the accuracy of the test results.

[0019] 2. By setting up a clamping mechanism, when it is necessary to test the segment bolts, the bolts can be clamped and fixed by the clamping mechanism. Then, the main body of the control equipment is started to test the segment bolts. After the test is completed, the test results can be viewed through the main body of the control equipment. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the connecting wire structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the clamping plate structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the fixing plate structure of this utility model.

[0026] In the diagram: 1. Main body of the pull-out force tester; 2. Connecting line; 3. Main body of the control equipment; 4. Electric telescopic rod; 5. Clamping mechanism; 51. Mounting plate; 52. Servo motor; 53. Lead screw; 54. Slider; 55. Clamping plate; 6. Base plate; 7. Auxiliary mechanism; 71. Support plate; 72. Rotating shaft; 73. Fastening nut; 74. Rotating rod; 75. Transmission column; 76. Slide plate; 77. Fixing plate; 8. Support column. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0028] like Figure 1-5 As shown in the figure, this embodiment proposes an auxiliary fixture for the pull-out test of shield tunnel segment bolts, including a pull-out force tester body 1, a connecting line 2 connected to the back of the pull-out force tester body 1, and a control device body 3 connected to the back of the connecting line 2, an electric telescopic rod 4 installed inside the pull-out force tester body 1, and a clamping mechanism 5 fixedly connected to the output end of the electric telescopic rod 4, a base plate 6 installed below the pull-out force tester body 1, an auxiliary mechanism 7 installed on the top of the base plate 6, and a support column 8 fixedly connected to the bottom of the base plate 6.

[0029] In this embodiment, the clamping mechanism 5 includes a mounting plate 51, a servo motor 52, a lead screw 53, a slider 54, and a clamping plate 55. The output end of the electric telescopic rod 4 is fixedly connected to the mounting plate 51, and the servo motor 52 is provided on the side of the mounting plate 51. The output end of the servo motor 52 is fixedly connected to the lead screw 53, and the slider 54 is threadedly connected to the surface of the lead screw 53. The bottom of the slider 54 is also connected to the lead screw 54.

[0030] The clamping plate 55 is fixedly connected. By setting the clamping mechanism 5, the segment bolts can be clamped, which makes it convenient for the main body 1 of the pull-out force tester to test the segment bolts.

[0031] In this embodiment, the auxiliary mechanism 7 includes a support plate 71, a rotating shaft 72, a fastening nut 73, a rotating rod 74, a transmission column (75), a sliding plate 76, and a fixing plate 77. The support plate 71 is fixedly connected to the top of the base plate 6. The rotating shaft 72 passes through the top of the support plate 71, and the fastening nut 73 is threadedly connected to the surface of the rotating shaft 72. The rotating rod 74 is fixedly connected to the surface of the rotating shaft 72 below the fastening nut 73, and the transmission column 75 is fixedly connected to the bottom of the rotating rod 74. The sliding plate 76 is attached to the surface of the transmission column 75, and the fixing plate 77 is fixedly connected to the top of the sliding plate 76. By setting the auxiliary mechanism 7, it can provide a certain auxiliary support effect for the main body 1 of the pull-out force tester during testing. This saves the time of the staff to find parts to assemble the tester and also prevents the main body 1 of the pull-out force tester from being unable to be fixed due to missing parts, thereby ensuring the accuracy of the test results.

[0032] In this embodiment, a round hole is provided at the top of the base plate 6, and four sets of support columns 8 are provided. The operator can insert the clamping mechanism 5 through the round hole at the top of the base plate 6, and then place the base plate 6 on the ground through the four sets of support columns 8.

[0033] In this embodiment, the surface of the lead screw 53 is provided with two sets of threads in opposite directions. The two sets of threads of the lead screw 53 are engaged with sliders 54, and the bottom of the two sets of sliders 54 are fixedly connected to clamps 55. Because the surface of the lead screw 53 is provided with two sets of threads in opposite directions, and the two sets of sliders 54 are engaged with it respectively, when the lead screw 53 rotates, it will drive the two sets of sliders 54 to slide relative to each other and move closer together in the two sets of transverse grooves at the bottom of the mounting plate 51. At this time, the clamps 55 fixedly connected to the two sets of sliders 54 will move relative to each other and move closer together. When the two sets of clamps 55 move to fully fit with the segment bolt, the segment bolt can be fixed.

[0034] In this embodiment, the bottom of the mounting plate 51 is provided with two sets of transverse grooves that match the two sets of sliders 54 respectively. The two sets of sliders 54 are respectively embedded in the two sets of transverse grooves of the mounting plate 51 and are slidably connected to the mounting plate 51. Because the bottom of the mounting plate 51 is provided with two sets of transverse grooves and the two sets of sliders 54 are respectively embedded therein, when the lead screw 53 drives the two sets of sliders 54 to slide, the two sets of sliders 54 will slide inside the two sets of transverse grooves at the bottom of the mounting plate 51. At this time, the two sets of transverse grooves at the bottom of the mounting plate 51 will have a certain limiting effect on the two sets of sliders 54.

[0035] In this embodiment, the rotating shaft 72 passes through the top of the support plate 71 and is rotatably connected to the support plate 71 and the base plate 6. The rotating shaft 72 is located at the center of the rotating rod 74. Since the rotating rod 74 is fixedly connected to the rotating shaft 72, when the rotating shaft 72 rotates, it will drive the rotating rod 74 to rotate clockwise.

[0036] In this embodiment, two sets of transmission columns 75 and sliding plates 76 are respectively provided, and the two sets of transmission columns 75 are respectively located at both ends of the rotating rod 74. The top of each set of sliding plates 76 is provided with a transverse groove that matches the two sets of transmission columns 75, and the two sets of transmission columns 75 are respectively embedded in the transverse grooves of the two sets of sliding plates 76 and slidably connected to the sliding plates 76. Because both sets of transmission columns 75 are connected to the rotating rod

[0037] 74 is fixedly connected, so when the rotating rod 74 rotates, it will drive the two sets of transmission columns 75 to slide left and right in the transverse grooves of the two sets of slide plates 76 respectively. At this time, the two sets of slide plates 76 will slide relative to each other in the two sets of slide grooves at the top of the base plate 6 and move closer to each other.

[0038] In this embodiment, the top of the base plate 6 is provided with two sets of sliding grooves that match the sliding plates 76 respectively. The two sets of sliding plates 76 are respectively embedded in the two sets of sliding grooves on the top of the base plate 6 and are slidably connected to the base plate 6. Because the top of the base plate 6 is provided with two sets of sliding grooves and the two sets of sliding plates 76 are respectively embedded in them, when the two sets of transmission columns 75 drive the two sets of sliding plates 76 to slide, the two sets of sliding plates 76 will slide relative to each other in the two sets of sliding grooves on the top of the base plate 6. At this time, the two sets of sliding grooves on the top of the base plate 6 will have a certain limiting effect on the two sets of sliding plates 76, so that the two sets of sliding plates 76 can move horizontally.

[0039] In this embodiment, two sets of fixing plates 77 are provided, and both sets of fixing plates 77 are arranged in a semi-circular shape. Since the two sets of fixing plates 77 are fixedly connected to the two sets of sliding plates 76 respectively, when the two sets of sliding plates 76 slide relative to each other, they will drive the two sets of fixing plates 77 to move relative to each other and move closer to each other. When the two sets of fixing plates 77 move to be completely in contact with the main body 1 of the pull-out force tester, tighten the fastening nut 73 to fix the main body 1 of the pull-out force tester.

[0040] In use, the clamping mechanism 5 at the bottom of the pull-out force tester body 1 passes through the round hole at the top of the base plate 6. Then, manually control the rotating shaft 72 to rotate clockwise. Because the rotating rod 74 is fixedly connected to the rotating shaft 72, when the rotating shaft 72 rotates, it will drive the rotating rod 74 to rotate clockwise as well. Because both sets of transmission columns 75 are fixedly connected to the rotating rod 74, when the rotating rod 74 rotates, it will drive the two sets of transmission columns 75 to slide left and right in the transverse grooves of the two sets of slide plates 76 respectively. At this time, the two sets of slide plates 76 will slide relative to each other and move closer together in the two sets of slide grooves at the top of the base plate 6. Plate 77 is fixedly connected to two sets of sliding plates 76 respectively. So when the two sets of sliding plates 76 slide relative to each other, they will drive the two sets of fixed plates 77 to move relative to each other and move closer together. When the two sets of fixed plates 77 move to be completely in contact with the main body 1 of the pull-out force tester, tighten the fastening nut 73 to fix the main body 1 of the pull-out force tester. This will provide a certain auxiliary support effect when the main body 1 of the pull-out force tester is tested. This saves the time of the staff to find parts to assemble. It can also prevent the main body 1 of the pull-out force tester from being unable to be fixed due to missing parts, thus ensuring the accuracy of the test results.

[0041] After fixing, the base plate 6 is placed on the ground via the four sets of support columns 8 at its bottom. Then, the servo motor 52 is started to drive the lead screw 53 to rotate clockwise. Because the surface of the lead screw 53 is provided with two sets of threads in opposite directions, and the two sets of sliders 54 are respectively engaged with it, when the lead screw 53 rotates, it will drive the two sets of sliders 54 to slide relative to each other and move closer together in the two sets of transverse grooves at the bottom of the mounting plate 51. At this time, the clamping plates 55, which are fixedly connected to the two sets of sliders 54 respectively, will move relative to each other and move closer together. When the two sets of clamping plates 55 move to fully fit with the segment bolt, the segment bolt can be fixed. Then, the pull-out force tester body 1 is started by the control equipment body 3, so that the pull-out force tester body 1 starts the electric telescopic rod 4 to drive the clamping mechanism 5 to rise and perform a pull-out test on the segment bolt. After the test is completed, the staff can view the test results through the control equipment body 3.

[0042] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model.

[0043] Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model shall be included within the scope of protection of this utility model.

Claims

1. An auxiliary fixture for shield tunnel segment bolt pull-out testing, characterized in that, The device includes a pull-out force tester body (1), a connecting line (2) connected to the back of the pull-out force tester body (1), and a control device body (3) connected to the back of the connecting line (2). An electric telescopic rod (4) is installed inside the pull-out force tester body (1), and a clamping mechanism (5) is fixedly connected to the output end of the electric telescopic rod (4). A base plate (6) is installed below the pull-out force tester body (1), an auxiliary mechanism (7) is installed on the top of the base plate (6), and a support column (8) is fixedly connected to the bottom of the base plate (6).

2. The auxiliary fixture for shield tunnel segment bolt pull-out testing according to claim 1, characterized in that, The clamping mechanism (5) includes a mounting plate (51), a servo motor (52), a lead screw (53), a slider (54), and a clamping plate (55). The output end of the electric telescopic rod (4) is fixedly connected to the mounting plate (51), and the side of the mounting plate (51) is provided with a servo motor (52). The output end of the servo motor (52) is fixedly connected to the lead screw (53). The surface of the lead screw (53) is threadedly connected to the slider (54), and the bottom of the slider (54) is fixedly connected to the clamping plate (55).

3. The auxiliary fixture for shield tunnel segment bolt pull-out testing according to claim 1, characterized in that, The auxiliary mechanism (7) includes a support plate (71), a rotating shaft (72), a fastening nut (73), a rotating rod (74), a transmission column (75), a sliding plate (76), and a fixing plate (77). The support plate (71) is fixedly connected to the top of the base plate (6). The rotating shaft (72) passes through the top of the support plate (71), and the fastening nut (73) is threaded onto the surface of the rotating shaft (72). The rotating rod (74) is fixedly connected to the surface of the rotating shaft (72) below the fastening nut (73), and the transmission column (75) is fixedly connected to the bottom of the rotating rod (74). The sliding plate (76) is attached to the surface of the transmission column (75), and the fixing plate (77) is fixedly connected to the top of the sliding plate (76).

4. The auxiliary fixture for shield tunnel segment bolt pull-out testing according to claim 1, characterized in that, The top of the base plate (6) has a round hole, and the support column (8) is provided in four sets.

5. The auxiliary fixture for shield tunnel segment bolt pull-out testing according to claim 2, characterized in that, The surface of the lead screw (53) is provided with two sets of threads in opposite directions. The two sets of threaded surfaces of the lead screw (53) are engaged with sliders (54), and the bottom of the two sets of sliders (54) are fixedly connected with clamps (55).

6. The auxiliary fixture for shield tunnel segment bolt pull-out testing according to claim 2, characterized in that, The bottom of the mounting plate (51) has two sets of horizontal grooves that match the two sets of sliders (54) respectively. The two sets of sliders (54) are respectively embedded in the two sets of horizontal grooves of the mounting plate (51) and are slidably connected to the mounting plate (51).

7. The auxiliary fixture for shield tunnel segment bolt pull-out testing according to claim 3, characterized in that, The rotating shaft (72) passes through the top of the support plate (71) and is rotatably connected to the support plate (71) and the bottom plate (6). The rotating shaft (72) is located at the center of the rotating rod (74).

8. The auxiliary fixture for shield tunnel segment bolt pull-out testing according to claim 3, characterized in that, The transmission column (75) and the slide plate (76) are provided in two sets respectively, and the two sets of transmission columns (75) are respectively located at both ends of the rotating rod (74). The top of the two sets of slide plates (76) are provided with transverse grooves that match the two sets of transmission columns (75), and the two sets of transmission columns (75) are respectively embedded in the transverse grooves of the two sets of slide plates (76) and slidably connected to the slide plates (76).

9. The auxiliary fixture for shield tunnel segment bolt pull-out testing according to claim 3, characterized in that, The top of the base plate (6) is provided with two sets of sliding grooves that match the sliding plates (76) respectively. The two sets of sliding plates (76) are respectively embedded in the two sets of sliding grooves on the top of the base plate (6) and are slidably connected to the base plate (6).

10. The auxiliary fixture for shield tunnel segment bolt pull-out testing according to claim 3, characterized in that, The fixing plate (77) is provided in two sets, and both sets of fixing plates (77) are arranged in a semi-circular ring.

Images