Clamp for testing fastening performance of fastener of side slope flexible protective net

Abstract

The utility model provides a clamp for testing the fastening performance of a fastener of a slope flexible protective net, which belongs to the field of clamp devices for testing the performance of protective nets and comprises a base, a stretching assembly and a rotating assembly, an arch-shaped frame is fixedly mounted on the surface of the base, and mounting cavities are formed in the two sides of the interior of the arch-shaped frame; before testing, two steel wire ropes are respectively clamped in an upper fixing clamp and a lower fixing clamp, the two steel wire ropes are fixed through a fastener at a cross intersection, at the moment, a stepping motor is controlled to drive a lead screw to rotate, the lead screw rotates to drive a lifting block on the surface to slide and lift on the inner wall of a mounting cavity, and the steel wire ropes are clamped in the upper fixing clamp and the lower fixing clamp. The lifting block ascends and descends to drive the mounting base to move, the mounting base moves to drive the lower fixing clamp mounted through the mounting shaft to move in the direction away from the upper fixing clamp, and therefore the steel wire rope is stretched, and the anti-falling capacity of the fastener during stress stretching is detected.

Description

Technical Field

[0001] The utility model relates to the field of a protective net performance test fixture device, in particular to a fixture for testing the fastening performance of fasteners of a slope flexible protective net. Background Art

[0002] Slope protection net is a kind of protection equipment used in landslides on highways and railways. It is classified into active protection and passive protection. Slope protection net is also called slope protection net. Active protection Active protection system is a kind of flexible net covered with various types of wire rope nets wrapped on the slope or rock to be protected, so as to limit the weathering, peeling or destruction of the rock and soil on the slope surface and the collapse of dangerous rocks, or to control the movement of falling rocks within a certain range. Passive protection is composed of four main parts: wire rope net, ring net, fixed system pressure relief ring and steel column. The steel column and wire rope net are connected and combined to form a whole, forming surface protection for the protected area, thereby preventing the collapse of rock and soil and playing a role in slope protection. Existing slope protection nets are directly installed after they are manufactured. The anti-falling and anti-misalignment performance of the fasteners on the surface of the protection net cannot be tested, making it impossible to inspect the structural stability of the protection net. Utility Model Content

[0003] The purpose of the present utility model is to provide a fixture for testing the fastening performance of fasteners of a flexible slope protection net, so as to solve the problem raised in the above-mentioned background technology that the existing slope protection net is directly installed after being manufactured, and the anti-falling and anti-misalignment pulling performance of the fasteners on the surface of the protection net cannot be tested, so that the structural stability of the protection net cannot be inspected and tested.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixture for testing the fastening performance of fasteners of a slope flexible protection net, comprising: a base, a tensile component and a rotating component;

[0005] Wherein: an arch frame is fixedly installed on the surface of the base, and mounting cavities are opened on both sides of the interior of the arch frame;

[0006] The stretching assembly includes a screw rod rotatably installed in the mounting cavities on both sides, a stepper motor is installed at the internal top of the mounting cavity, the output end of the stepper motor is fixedly connected to one end of the screw rod, a lifting block is threadedly connected to the surface of the screw rod, and the two sides of the lifting block are inserted into the limit grooves provided on the inner wall of the mounting cavity, and the surfaces of the two lifting blocks are fixedly installed with mounting seats, and the top inner wall of the arch frame and the middle part of the surface of the mounting seat are both installed with mounting shafts, an upper fixing clamp is installed at the bottom of the arch frame through the mounting shaft, and a lower fixing clamp is installed in the middle part of the surface of the mounting seat through the mounting shaft, a steel wire rope is held by the fixing clamp between the upper fixing clamp and the lower fixing clamp, and a fastener is fixed between the two steel wire ropes;

[0007] The rotating assembly includes a rotating motor installed inside the top of the arch frame, a driving gear is fixedly installed on the output end of the rotating motor, and a driven gear is fixedly installed on one end of the mounting shaft located at the bottom of the arch frame, and the driving gear is meshed with the driven gear.

[0008] As a preferred solution of the present invention: the upper fixing clamp is composed of a U-shaped seat, and the two sides of the bottom of the U-shaped seat are connected to clamping blocks by bolts, and the bottom of the U-shaped seat and the surface of the clamping block are provided with horizontal thread grooves, and the lower fixing clamp is composed of a fixing plate, and the surface of the fixing plate is provided with a clamping plate, and the surfaces of the fixing plate and the clamping plate are provided with vertical thread grooves.

[0009] As a preferred solution of the present invention: an indicator needle is fixedly mounted on one side of the surface of the mounting seat, and a scale line is engraved on one side of the surface of the arch frame, and one end of the indicator needle corresponds to the scale line.

[0010] As a preferred solution of the present invention: a connecting disk is fixedly mounted on one end of the mounting shaft, and a mounting bolt is threadedly connected to the surface of the connecting disk.

[0011] As a preferred solution of the present invention: a tension sensor is also installed on the back of the fixing plate.

[0012] As a preferred solution of the present invention: a switch panel is installed on the surface of the mounting base, the stepping motor, the rotary motor and the tension sensor are all electrically connected to the switch panel, and the switch panel is electrically connected to an external power supply.

[0013] As a preferred solution of the utility model: the upper fixing clamp and the lower fixing clamp are both composed of a square clamp block and a square clamp plate, the square clamp block and the square clamp plate are fixedly connected by screws, and two parallel clamping grooves are provided on the surfaces of the square clamp block and the square clamp plate, the steel wire rope is bent into a U shape and both ends are clamped inside the clamping groove, and the two U-shaped steel wire ropes are fixedly connected by fasteners.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) Before the test, two steel wire ropes are clamped inside the upper fixing clamp and the lower fixing clamp respectively. The two steel wire ropes are fixed at the cross intersection by fasteners. At this time, the stepper motor is controlled to drive the screw rod to rotate. The rotation of the screw rod drives the lifting block on the surface to slide and lift on the inner wall of the installation cavity. The lifting block drives the installation seat to move. The movement of the installation seat drives the lower fixing clamp installed through the installation shaft to move away from the upper fixing clamp, thereby stretching the steel wire rope and testing the fastener's ability to resist falling off when subjected to force and stretching;

[0016] (2) A rotating motor is installed inside the top of the arch frame through a rotating assembly. A driving gear is fixedly installed at the output end of the rotating motor, and a driven gear is fixedly installed at one end of the installation shaft at the bottom of the arch frame. When the rotating motor rotates, it drives the driving gear to rotate, and the driving gear drives the driven gear to rotate accordingly, thereby driving the installation shaft to rotate accordingly, so that a torsional force is formed between the two steel ropes, which is convenient for detecting the anti-misalignment pulling performance of the fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the stretching component of the present utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the upper fixing clip and the lower fixing clip of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the rotating assembly of the utility model;

[0021] Figure 5 This is a schematic diagram of the square clamp structure of the present utility model.

[0022] In the figure: 1. Base; 2. Arch frame; 3. Mounting cavity; 4. Tensile assembly; 41. Screw; 42. Stepper motor; 43. Lifting block; 44. Mounting seat; 45. Mounting shaft; 46. Upper fixing clamp; 461. U-shaped seat; 462. Clamping block; 463. Threaded groove; 47. Lower fixing clamp; 471. Fixing plate; 472. Clamping plate; 5. Fastener; 6. Rotating assembly; 61. Rotating motor; 62. Driving gear; 63. Driven gear; 7. Indicator needle; 8. Scale line; 9. Connecting plate; 10. Mounting bolt; 11. Tension sensor; 12. Switch panel; 13. Square clamping block; 14. Square clamping plate; 15. Clamping groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] See also Figures 1-4The utility model provides a technical solution: a fixture for testing the fastening performance of fasteners of a slope flexible protective net, comprising a base 1, a tensile component 4 and a rotating component 6; an arch frame 2 is fixedly mounted on the surface of the base 1, and mounting cavities 3 are opened on both sides of the interior of the arch frame 2;

[0026] See also Figure 1 , Figure 2 In this embodiment, the stretching assembly 4 includes a screw rod 41 rotatably installed inside the mounting cavities 3 on both sides, a stepping motor 42 is installed at the top of the inner side of the mounting cavity 3, and the output end of the stepping motor 42 is fixedly connected to one end of the screw rod 41. A lifting block 43 is threadedly connected to the surface of the screw rod 41. The two sides of the lifting block 43 are inserted into the limit grooves provided on the inner wall of the mounting cavity 3. A mounting seat 44 is fixedly installed on the surface of the two lifting blocks 43. A mounting shaft 45 is installed on the inner wall of the top of the arch frame 2 and the middle of the surface of the mounting seat 44. An upper fixing clamp 46 is installed at the bottom of the arch frame 2 through the mounting shaft 45, and a lower fixing clamp 47 is installed at the middle of the surface of the mounting seat 44 through the mounting shaft 45. A steel wire rope is fixed between the upper fixing clamp 46 and the lower fixing clamp 47, and a fastener 5 is fixed between the two steel wire ropes.

[0027] Specific usage: Before the test, the two steel wire ropes are clamped inside the upper fixing clamp 46 and the lower fixing clamp 47 respectively. The two steel wire ropes are fixed at the cross intersection by the fastener 5. At this time, the stepper motor 42 is controlled to drive the screw rod 41 to rotate. The rotation of the screw rod 41 drives the lifting block 43 on the surface to slide and lift on the inner wall of the installation cavity 3. The lifting block 43 drives the mounting seat 44 to move. The movement of the mounting seat 44 drives the lower fixing clamp 46 installed through the mounting shaft 45 to move away from the upper fixing clamp 47, thereby stretching the steel wire rope and testing the anti-falling ability of the fastener 5 when subjected to force and stretching.

[0028] See also Figure 1 , Figure 4 In this embodiment, the rotating assembly 6 includes a rotating motor 61 installed inside the top of the arch frame 2. A driving gear 62 is fixedly installed at the output end of the rotating motor 61. A driven gear 63 is fixedly installed at one end of the mounting shaft 45 located at the bottom of the arch frame 2. The driving gear 62 is meshed with the driven gear 63.

[0029] During specific use: a rotating motor 61 is installed inside the top of the arch frame 2, and a driving gear 62 is fixedly installed at the output end of the rotating motor 61. A driven gear 63 is fixedly installed at one end of the installation shaft 45 located at the bottom of the arch frame 2. When the rotating motor 61 rotates, it drives the driving gear 62 to rotate, and the driving gear 62 drives the driven gear 63 to rotate accordingly, thereby driving the installation shaft 45 to rotate accordingly, so that a torsional force is formed between the two steel ropes, which is convenient for detecting the anti-misalignment pulling performance of the fastener 5.

[0030] See also Figure 1 , Figure 3 In this embodiment, the upper fixing clamp 46 is composed of a U-shaped seat 461, and clamping blocks 462 are connected to the bottom of the U-shaped seat 461 on both sides by bolts. Horizontal thread grooves 463 are provided on the bottom of the U-shaped seat 461 and the surface of the clamping block 462. The lower fixing clamp 47 is composed of a fixing plate 471, and a clamping plate 472 is provided on the surface of the fixing plate 471. Vertical thread grooves 463 are provided on the surfaces of the fixing plate 471 and the clamping plate 472.

[0031] During specific use: the upper fixing clamp 46 consists of a U-shaped seat 461 and two clamping blocks 462, the clamping blocks 462 are connected to the two sides of the bottom of the U-shaped seat 461 by bolts, and the surfaces of the U-shaped seat 461 and the two clamping blocks 462 are provided with horizontal thread grooves 463, which are convenient for horizontal fixation and clamping of the wire rope. The lower fixing clamp 47 consists of a fixing plate 471 and a clamping plate 472, and the surfaces of the fixing plate 471 and the clamping plate 472 are provided with vertical thread grooves 463, which are convenient for vertical fixation of the wire rope. This fixing method is suitable for fixed clamping during tensile testing.

[0032] See also Figure 1 , Figure 2 In this embodiment, an indicator needle 7 is fixedly mounted on one side of the surface of the mounting seat 44 , and a scale line 8 is engraved on one side of the surface of the arch frame 2 , and one end of the indicator needle 7 corresponds to the scale line 8 .

[0033] During specific use: the indicator needle 7 installed on one side of the surface of the mounting seat 44 corresponds to the scale line 8. When the mounting seat 44 moves up and down, the indicator needle 7 moves to correspond to different scale lines 8. During the tensile test, the deformation of the wire rope can be known.

[0034] See also Figure 1 , Figure 3 In this embodiment, a connecting plate 9 is fixedly mounted on one end of the mounting shaft 45 , and a mounting bolt 10 is threadedly connected to the surface of the connecting plate 9 .

[0035] During specific use: the mounting shaft 45 is fixedly installed by the mounting bolts 10 on the surface of the connecting plate 9, so that the mounting shaft 45 and the upper fixing clamp 46 and the lower fixing clamp 47 can be disassembled and replaced with different clamps.

[0036] See also Figure 1 In this embodiment, a tension sensor 11 is also installed on the back of the fixing plate 471.

[0037] In specific use: the tension sensor 11 installed on the back of the fixing plate 471 is used to detect the force on the wire rope during the tensile test.

[0038] See also Figure 1In this embodiment, a switch panel 12 is mounted on the surface of the mounting base 44 , the stepping motor 42 , the rotary motor 61 and the tension sensor 11 are all electrically connected to the switch panel 12 , and the switch panel 12 is electrically connected to an external power supply.

[0039] In specific use: when the switch panel 12 is connected to the external power supply, the stepping motor 42, the rotating motor 61 and the tension sensor 11 are powered and operated under control; when the switch panel 12 is disconnected from the external power supply, the device stops operating.

[0040] Before the test, the two steel wire ropes are clamped in the upper fixing clamp 46 and the lower fixing clamp 47 respectively. The two steel wire ropes are fixed at the cross intersection by the fastener 5. At this time, the stepper motor 42 is controlled to drive the screw rod 41 to rotate. The rotation of the screw rod 41 drives the lifting block 43 on the surface to slide and lift on the inner wall of the installation cavity 3. The lifting block 43 drives the mounting seat 44 to move. The movement of the mounting seat 44 drives the lower fixing clamp 46 installed through the mounting shaft 45 to move away from the upper fixing clamp 47, thereby stretching the steel wire rope and testing the anti-falling ability of the fastener 5 when subjected to tension.

[0041] Example 2

[0042] See Figure 5 As shown: In order to facilitate the better clamping of the steel wire rope during the test of anti-misalignment pulling, the distinguishing features of this embodiment from embodiment 1 are: the upper fixing clamp 46 and the lower fixing clamp 47 are both composed of a square clamp block 13 and a square clamp plate 14, the square clamp block 13 and the square clamp plate 14 are fixedly connected by screws, and two parallel clamping grooves 15 are provided on the surfaces of the square clamp block 13 and the square clamp plate 14, the steel wire rope is bent into a U shape and both ends are clamped inside the clamping groove 15, and the two U-shaped steel wire ropes are fixedly connected by fasteners 5.

[0043] During specific use: the upper fixing clamp 46 and the lower fixing clamp 47 are composed of a square clamping block 13 and a square clamping plate 14, which are fixedly connected by screws. Two parallel clamping grooves 15 are opened on the surface of the square clamping block 13 and the square clamping plate 14. The two ends of the two steel wire ropes are respectively clamped in the clamping grooves 15. The two steel wire ropes are interlaced and fixed by fasteners 5. This structural clamp is suitable for testing the anti-misalignment pulling performance of the steel wire rope.

[0044] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fixture for testing the fastening performance of fasteners of a slope flexible protective net, characterized in that: include: A base (1), an arch frame (2) is fixedly mounted on the surface of the base (1), and mounting cavities (3) are formed on both sides of the interior of the arch frame (2); The stretching assembly (4) includes a screw (41) rotatably mounted inside the mounting cavities (3) on both sides, a stepper motor (42) is mounted on the top of the mounting cavity (3), an output end of the stepper motor (42) is fixedly connected to one end of the screw (41), a lifting block (43) is threadedly connected to the surface of the screw (41), and both sides of the lifting block (43) are inserted into the limit grooves provided on the inner wall of the mounting cavity (3), and the surfaces of the two lifting blocks (43) are fixedly connected to the upper and lower ends of the screw (41). A mounting seat (44) is fixedly installed, a mounting shaft (45) is installed on the inner wall of the top end of the arch frame (2) and the middle of the surface of the mounting seat (44), an upper fixing clamp (46) is installed on the bottom of the arch frame (2) through the mounting shaft (45), and a lower fixing clamp (47) is installed on the middle of the surface of the mounting seat (44) through the mounting shaft (45), a steel wire rope is fixedly clamped between the upper fixing clamp (46) and the lower fixing clamp (47), and a fastener (5) is fixed between the two steel wire ropes; A rotating assembly (6) includes a rotating motor (61) installed inside the top end of the arch frame (2), a driving gear (62) is fixedly installed at the output end of the rotating motor (61), and a driven gear (63) is fixedly installed at one end of the mounting shaft (45) located at the bottom of the arch frame (2), and the driving gear (62) is meshed with the driven gear (63).

2. A fixture for testing the fastening performance of fasteners of a slope flexible protection net according to claim 1, characterized in that: The upper fixing clamp (46) is composed of a U-shaped seat (461), and the two sides of the bottom of the U-shaped seat (461) are connected to clamping blocks (462) by bolts. The bottom of the U-shaped seat (461) and the surface of the clamping block (462) are provided with horizontal thread grooves (463). The lower fixing clamp (47) is composed of a fixing plate (471), and the surface of the fixing plate (471) is provided with a clamping plate (472). The surfaces of the fixing plate (471) and the clamping plate (472) are provided with vertical thread grooves (463).

3. The fixture for testing the fastening performance of fasteners of a slope flexible protection net according to claim 1, characterized in that: An indicator needle (7) is fixedly mounted on one side of the surface of the mounting seat (44), and a scale line (8) is engraved on one side of the surface of the arch frame (2), with one end of the indicator needle (7) corresponding to the scale line (8).

4. The fixture for testing the fastening performance of fasteners of a slope flexible protection net according to claim 1, characterized in that: A connecting disk (9) is fixedly mounted on one end of the mounting shaft (45), and a mounting bolt (10) is threadedly connected to the surface of the connecting disk (9).

5. The fixture for testing the fastening performance of fasteners of a slope flexible protection net according to claim 2, characterized in that: A tension sensor (11) is also installed on the back of the fixing plate (471).

6. A fixture for testing the fastening performance of fasteners of a slope flexible protection net according to claim 5, characterized in that: A switch panel (12) is mounted on the surface of the mounting seat (44); the stepping motor (42), the rotary motor (61) and the tension sensor (11) are all electrically connected to the switch panel (12); and the switch panel (12) is electrically connected to an external power supply.

7. The fixture for testing the fastening performance of fasteners of a slope flexible protection net according to claim 1, characterized in that: The upper fixing clamp (46) and the lower fixing clamp (47) are both composed of a square clamp block (13) and a square clamp plate (14), the square clamp block (13) and the square clamp plate (14) are fixedly connected by screws, and the surfaces of the square clamp block (13) and the square clamp plate (14) are both provided with two parallel clamping grooves (15), the steel wire rope is bent into a U shape and both ends are clamped inside the clamping grooves (15), and the two U-shaped steel wire ropes are fixedly connected by a fastener (5).

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