Tensometer for measuring tension of pipe seam type anchor rod

Abstract

The utility model discloses a tension meter for measuring the tension of a pipe seam type anchor rod, which belongs to a tension testing device in the technical field of mining equipment, and adopts the technical scheme that the tension meter comprises the pipe seam type anchor rod, the pipe seam type anchor rod is inserted into a rock body and is exposed out of an anchor disc outside the rock body; one end of the auxiliary tray abuts against and makes contact with the exterior of the rock mass, and the anchor disc is connected with a stress hook rod; and moreover, a hydraulic cylinder is arranged at the other end of the auxiliary tray in an abutting mode, the stress hook rod penetrates through the auxiliary tray and the hydraulic cylinder and is stressed in the hydraulic cylinder, and the hydraulic cylinder is connected with an oil pump pressure assembly. According to the tension meter for measuring the tension of the pipe seam type anchor rod, the auxiliary tray is arranged to abut against a rock, so that the stressed hook rod hooks the end part of the pipe seam type anchor rod, and due to the arrangement of the auxiliary tray, the direct drawing operation of the pipe seam type anchor rod is realized, and the safety of roadway construction is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mining equipment technical field, concretely relates to a tension meter for pipe slot type anchor rod tension measurement. BACKGROUND

[0002] In the construction process of underground mine shaft engineering, the stability of roadway roof plays a crucial role, so the stability of the roof must be improved. At present, many underground mines adopt the method of pipe slot type anchor rod support after roadway blasting forming. Since a large number of pipe slot type anchor rod supports are used, it is particularly important to detect the anchoring force of the pipe slot type anchor rod. Since the pipe slot type anchor rod is closely attached to the rock surface after construction, the anchoring force cannot be directly measured by using a pullout instrument, so it is necessary to invent a tool to assist in measuring the anchoring force of the pipe slot type anchor rod. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a tension meter for pipe slot type anchor rod tension measurement, which is characterized by the following technical scheme: an auxiliary tray is arranged to abut against the rock, so that the force-bearing bent hook rod hooks the end of the pipe slot type anchor rod, and the force-bearing bent hook rod is stressed in the hydraulic cylinder, and the size of the tension is measured under the control of the oil pump pressure assembly. Since the auxiliary tray is arranged, direct pulling operation of the pipe slot type anchor rod is realized, and the safety of roadway construction is improved.

[0004] The utility model discloses a tension meter for pipe slot type anchor rod tension measurement, which is characterized by the following technical scheme: an auxiliary tray is arranged to abut against the rock, so that the force-bearing bent hook rod hooks the end of the pipe slot type anchor rod, and the force-bearing bent hook rod is stressed in the hydraulic cylinder, and the size of the tension is measured under the control of the oil pump pressure assembly. Since the auxiliary tray is arranged, direct pulling operation of the pipe slot type anchor rod is realized, and the safety of roadway construction is improved.

[0005] The pipe slot type anchor rod is used to be inserted into the rock mass and to protrude out of the anchor disc outside the rock mass.

[0006] The auxiliary tray is arranged to abut against the rock, so that the force-bearing bent hook rod hooks the end of the pipe slot type anchor rod, and the force-bearing bent hook rod is stressed in the hydraulic cylinder, and the size of the tension is measured under the control of the oil pump pressure assembly. Since the auxiliary tray is arranged, direct pulling operation of the pipe slot type anchor rod is realized, and the safety of roadway construction is improved.

[0007] The other end of the auxiliary tray is provided with a hydraulic cylinder, the force-bearing bent hook rod passes through the auxiliary tray and the hydraulic cylinder, and is stressed in the hydraulic cylinder, and the hydraulic cylinder is connected with an oil pump pressure assembly.

[0008] Further, the auxiliary tray comprises an upper steel ring and a lower steel ring arranged in sequence from top to bottom, and the upper steel ring and the lower steel ring are fixedly connected by a connecting rod.

[0009] Further, the upper steel ring is a disc structure with a through hole in the middle, and the lower steel ring is a circular ring structure.

[0010] Further, the diameter of the upper steel ring is smaller than the diameter of the lower steel ring, the upper steel ring and the lower steel ring are in the same straight line, and the plurality of connecting rods are inclinedly arranged between the upper steel ring and the lower steel ring.

[0011] Further, the stress bending hook rod comprises a main rod and a bending hook arranged at any one end of the main rod.

[0012] Further, the plurality of connecting rods and the stress bending hook rod are all threaded steel.

[0013] Further, the bottom of the lower steel ring is provided with a rubber layer.

[0014] Further, the stress bending hook rod is arranged at the position of the center axis of the auxiliary tray.

[0015] The beneficial effects of the utility model are embodied in:

[0016] 1. In the utility model, the force of the tubular slotted anchor rod is measured by pulling the tubular slotted anchor rod inserted into the rock, thereby checking the supporting quality of the tubular slotted anchor rod and improving the safety of mining work; more specifically, the auxiliary tray is arranged at the end of the tubular slotted anchor rod extending out of the rock, the auxiliary tray is arranged against the rock, the anchor disc of the tubular slotted anchor rod hooks the stress bending hook rod, the stress bending hook rod passes through the auxiliary tray, the hydraulic cylinder is arranged against the auxiliary tray, the stress bending hook rod is arranged in the hydraulic cylinder to bear the force, the hydraulic cylinder is controlled by the external oil pump pressure assembly, the pulling force of the tubular slotted anchor rod is read from the pressure display table of the oil pump pressure assembly, the auxiliary tray is arranged to transmit the pulling force between the hydraulic cylinder and the tubular slotted anchor rod, thereby solving the problem that the hydraulic cylinder cannot be directly pulled, and the measurement of the pulling force of the tubular slotted anchor rod and the safety of the roadway construction are realized.

[0017] 2. In the utility model, the auxiliary tray is connected by the upper steel ring and the lower steel ring under the connection of the plurality of connecting rods, the overall weight and material are reduced as much as possible under the condition that the auxiliary tray has a certain rigidity, the auxiliary tray is convenient to install and use, the production cost of the auxiliary tray is reduced, and the auxiliary tray is convenient to process and produce.

[0018] 3. In the utility model, the upper steel ring is arranged as a disc structure, the bottom of the hydraulic cylinder is stably arranged against the upper steel ring to bear the force, the stability of the hydraulic cylinder pulling the stress bending hook rod is maintained, the lower steel ring is arranged as a circular ring structure, the circular ring structure is larger than the upper steel ring, the outer wall of the rock is mostly uneven, the larger circular ring structure can stably arrange the auxiliary tray against the rock, and the material of the lower steel ring is saved.

[0019] 4. In the present invention, the diameter of the upper steel ring is set to be smaller than the diameter of the lower steel ring, and the multiple connecting rods between the upper steel ring and the lower steel ring are evenly distributed on the circumference of the upper steel ring and the lower steel ring. The connecting rods arranged obliquely between the upper steel ring and the lower steel ring make the entire auxiliary tray a frustum structure, so that the force effect at both ends of the entire auxiliary tray is more stable.

[0020] 5. In the present invention, a rubber layer is provided at the bottom of the lower steel ring, so that the contact between the lower steel ring and the rock surface is more stable, thereby enhancing the stability of the auxiliary tray during the tension measurement process.

[0021] 6. In the present invention, the stressed hook rod is placed at the center axis of the auxiliary tray, so that the auxiliary force of the hydraulic cylinder on the auxiliary tray is more balanced, and the problem of tipping during the pulling measurement process is reduced as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0023] Figure 1 This is a schematic diagram of the overall structure of the dynamometer of the utility model;

[0024] Figure 2 This is a schematic structural diagram of the stressed bent hook rod of the utility model in the auxiliary tray.

[0025] In the accompanying drawings, 1-pipe seam anchor, 2-rock mass, 3-anchor plate, 4-auxiliary tray, 5-loaded hook rod, 6-hydraulic cylinder, 7-oil pump pressure assembly, 8-upper steel ring, 9-lower steel ring, 10-connecting rod, 11-through hole, 12-main rod, 13-hook, 14-rubber layer. DETAILED DESCRIPTION

[0026] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0027] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0028] Reference Figure 1 andFigure 2 A tension gauge for pipe and slot anchor rod tension measurement, comprising:

[0029] A pipe and slot anchor rod 1 for insertion into a rock mass 2 and for protruding outside the rock mass 2 with an anchor plate 3;

[0030] An auxiliary tray 4 abutting against the outside of the rock mass 2 at one end, the anchor plate 3 being connected with a force-bearing bent hook rod 5; and

[0031] The other end of the auxiliary tray 4 is provided with a hydraulic cylinder 6, the force-bearing bent hook rod 5 passes through the auxiliary tray 4 and the hydraulic cylinder 6 and is subjected to force in the hydraulic cylinder 6, and the hydraulic cylinder 6 is connected with an oil pump pressure assembly 7.

[0032] With reference to Figure 1 By pulling the pipe and slot anchor rod 1 inserted into the rock mass, the force of the pipe and slot anchor rod 1 is measured, the support quality of the pipe and slot anchor rod 1 is checked, and the safety of mining work is improved. More specifically, the auxiliary tray 4 is provided at the end of the pipe and slot anchor rod 1 protruding from the rock mass, the auxiliary tray 4 is abutted against the rock mass, the anchor plate 3 of the pipe and slot anchor rod 1 hooks the force-bearing bent hook rod 5, the force-bearing bent hook rod 5 passes through the auxiliary tray 4, the hydraulic cylinder 6 abuts against the auxiliary tray 4, and the force-bearing bent hook rod 5 is subjected to force in the hydraulic cylinder 6.

[0033] Therefore, the hydraulic cylinder 6 is hydraulically controlled by the external oil pump pressure assembly 7, and the tension of the pipe and slot anchor rod 1 during pulling can be read from the pressure display table in the oil pump pressure assembly 7. Since the auxiliary tray 4 is provided to transmit the tension between the hydraulic cylinder 6 and the pipe and slot anchor rod 1, the problem of the hydraulic cylinder 6 being unable to pull directly is solved, thereby achieving measurement of the tension of the pipe and slot anchor rod 1 and improving the safety of roadway construction.

[0034] Preferably, the auxiliary tray 4 comprises an upper steel ring 8 and a lower steel ring 9 arranged in sequence from top to bottom, and the upper steel ring 8 and the lower steel ring 9 are fixedly connected by a connecting rod 10.

[0035] It can be understood that since the auxiliary tray 4 is connected by the upper steel ring 8 and the lower steel ring 9 under the connection of multiple connecting rods 10, the overall weight and material are reduced as much as possible while the entire auxiliary tray 4 has a certain rigidity, which not only facilitates installation and use of the auxiliary tray 4, but also reduces the production cost of the auxiliary tray 4 and facilitates processing and production.

[0036] Preferably, the upper steel ring 8 is a disc structure with a through hole 11 in the middle, and the lower steel ring 9 is a circular ring structure.

[0037] With reference toFigure 2 Because the upper ring 8 is set as a disc structure, it is beneficial for the bottom of the hydraulic cylinder 6 to stably bear against the upper ring 8, maintaining the stability of the hydraulic cylinder 6 in pulling the force-bending hook rod 5, and the lower ring 9 is a circular ring structure, which is relatively larger than the upper ring 8. Because the outer wall of the rock is mostly uneven, the larger circular ring structure can also make the auxiliary tray 4 stably bear against the rock, and at the same time, the material of the lower ring 9 is saved.

[0038] Preferably, the diameter of the upper ring 8 is smaller than the diameter of the lower ring 9, the upper ring 8 and the lower ring 9 are in the same line, and the plurality of connecting rods 10 are obliquely arranged between the upper ring 8 and the lower ring 9.

[0039] The diameter of the upper ring 8 is smaller than the diameter of the lower ring 9, and the plurality of connecting rods 10 between the upper ring 8 and the lower ring 9 are arranged on the circumference of the upper ring 8 and the lower ring 9. The connecting rods 10 obliquely arranged between the upper ring 8 and the lower ring 9 make the entire auxiliary tray 4 a conical structure, making the force effect of both ends of the entire auxiliary tray 4 more stable.

[0040] As a preferred mode of the embodiment, the plurality of connecting rods 10 are evenly arranged between the upper ring 8 and the lower ring 9, and the length of the connecting rod 10 is 25 cm, the diameter of the connecting rod 10 is 20 mm, the thickness of the upper ring 8 and the lower ring 9 is 3 cm, the diameter of the through hole 11 in the upper ring 8 is 3 cm, and the diameter of the upper ring 8 is 20 cm. The outer diameter of the lower ring 9 is 30 cm, and the inner diameter of the lower ring 9 is 24 cm.

[0041] Preferably, the force-bending hook rod 5 includes a main rod 12 and a hook 13 arranged at any one end of the main rod 12, and the hook 13 is integrally arranged with the main rod 12.

[0042] Preferably, the plurality of connecting rods 10 and the force-bending hook rod 5 are both threaded steel.

[0043] Preferably, the bottom of the lower ring 9 is provided with a rubber layer 14.

[0044] It can be understood that the rubber layer 14 is arranged at the bottom of the lower ring 9, so that the contact between the lower ring 9 and the rock surface is more stable, thereby enhancing the stability of the auxiliary tray 4 during the tension measurement process.

[0045] Preferably, the force-bending hook rod 5 is arranged at the position of the central axis of the auxiliary tray 4.

[0046] As a preferred mode of the embodiment, the force bending hook rod 5 is arranged at the center axis of the auxiliary tray 4, so that the hydraulic cylinder 6 is balanced in the auxiliary force of the auxiliary tray 4, and the overturning problem generated in the drawing measurement process is reduced as much as possible.

[0047] The working principle and working process of the utility model are as follows:

[0048] The tension meter for the pipe slot type anchor rod tension measurement is used, the pipe slot type anchor rod 1 is inserted into the rock mass 2, the auxiliary tray is arranged in abutment on the rock mass 2, and the anchor disc 3 of the pipe slot type anchor rod 1 is arranged outside the rock mass 2; at this time, the hook 13 end of the force bending hook rod 5 is arranged in hook connection with the anchor disc 3, the main rod 12 passes through the auxiliary tray 4, and the main rod 12 is arranged in the hydraulic cylinder 6 for force control; the end of the hydraulic cylinder is in abutment with the upper steel ring 8 of the auxiliary tray 4; under the pressure control of the oil pump pressure assembly 7 on the hydraulic cylinder 6, the tension of the pipe slot type anchor rod 1 is measured, and the specific value is displayed in the oil pump pressure assembly 7.

[0049] Further, the pipe slot type anchor rod 1 inserted into the rock is drawn in tension, so that the tension of the pipe slot type anchor rod 1 is measured, the support quality of the pipe slot type anchor rod 1 is checked, and the safety of the mining work is improved; more specifically, the auxiliary tray 4 is arranged in abutment with the rock at the end of the pipe slot type anchor rod 1 extending out of the rock, the anchor disc 3 of the pipe slot type anchor rod 1 hooks the force bending hook rod 5, the force bending hook rod 5 passes through the auxiliary tray 4, the hydraulic cylinder 6 is in abutment with the auxiliary tray 4, and the force bending hook rod 5 is arranged in the hydraulic cylinder 6 for force control; the hydraulic cylinder 6 is controlled by the external oil pump pressure assembly 7, and the tension of the pipe slot type anchor rod 1 is read from the pressure display table in the oil pump pressure assembly 7; since the auxiliary tray 4 is arranged to transmit the tension between the hydraulic cylinder 6 and the pipe slot type anchor rod 1, the problem that the hydraulic cylinder 6 cannot be directly drawn is solved, thereby realizing the measurement of the tension of the pipe slot type anchor rod 1 and improving the safety of the roadway construction.

[0050] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should be covered in the scope of the claims and the description of the utility model.

Claims

1. A tensile force gauge for measuring the tension of a pipe seam anchor, characterized in that: include: A pipe-seam type anchor rod (1), the pipe-seam type anchor rod (1) being used to be inserted into a rock mass (2) and to have an anchor plate (3) protruding outside the rock mass (2); An auxiliary tray (4), one end of the auxiliary tray (4) is in contact with the outside of the rock mass (2), and the anchor plate (3) is connected to a load-bearing hook rod (5); and, A hydraulic cylinder (6) is provided at the other end of the auxiliary tray (4), and the stressed hook rod (5) passes through the auxiliary tray (4) and the hydraulic cylinder (6) and is stressed in the hydraulic cylinder (6). The hydraulic cylinder (6) is connected to an oil pump pressure assembly (7).

2. The tensile force gauge for measuring the tension of a pipe seam anchor as claimed in claim 1, characterized in that: The auxiliary tray (4) comprises an upper steel ring (8) and a lower steel ring (9) arranged in sequence from top to bottom, and the upper steel ring (8) and the lower steel ring (9) are fixedly connected via a connecting rod (10).

3. The tensile force gauge for measuring the tension of a pipe seam anchor as claimed in claim 2, characterized in that: The upper steel ring (8) is a disc structure with a through hole (11) provided in the middle, and the lower steel ring (9) is a ring structure.

4. The tensile force gauge for measuring the tension of a pipe seam anchor as claimed in claim 3, characterized in that: The diameter of the upper steel ring (8) is smaller than the diameter of the lower steel ring (9), the circles of the upper steel ring (8) and the lower steel ring (9) are on the same straight line, and the plurality of connecting rods (10) are arranged obliquely between the upper steel ring (8) and the lower steel ring (9).

5. The tensile force meter for measuring the tension of a pipe seam anchor as claimed in claim 1, characterized in that: The stressed hook rod (5) comprises a main rod (12) and a hook (13) arranged at either end of the main rod (12), wherein the hook (13) is integrally arranged with the main rod (12).

6. The tensile force gauge for measuring the tension of a pipe seam anchor as claimed in claim 2, characterized in that: The plurality of connecting rods (10) and the load-bearing hook rods (5) are all threaded steel bars.

7. The tensile force meter for measuring the tension of a pipe seam anchor as claimed in claim 2, characterized in that: A rubber layer (14) is provided at the bottom of the lower steel ring (9).

8. The tensile force gauge for measuring the tension of a pipe seam anchor according to any one of claims 1 to 7, characterized in that: The stressed bent hook rod (5) is placed at the position of the central axis of the auxiliary tray (4).

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