Prestressed anchor rod drawing device

Abstract

The utility model provides a pre-stressed anchor rod drawing device which comprises a base plate, a pull rod and a pull rod. The at least two telescopic supporting legs are vertically connected to the lower portion of the base plate, have a first telescopic sliding state and a second locking state and are used for abutting against the working face where the pre-stressed anchor rods are located; the jack is installed on the base plate and connected with a connecting rod, the connecting rod penetrates through the through hole, and the jack is used for controlling the connecting rod to move in a reciprocating mode in the direction perpendicular to the base plate; the sleeve is arranged at the end, away from the base plate, of the connecting rod, and threads are arranged on the inner wall of the sleeve and used for being connected with the pre-stressed anchor rod. The prestressed anchor rod drawing device is simple in structure, convenient to disassemble and assemble, high in stability, good in safety, high in drawing efficiency and good in anchor rod anchoring effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anchor rod pulling, and in particular to a prestressed anchor rod pulling device. BACKGROUND

[0002] Pumped storage is to use the electric energy in the valley period of electric power load to pump water to the upper reservoir, and to release the water stored in the upper reservoir to the lower reservoir to generate electricity in the peak period of electric power load, also known as energy storage power generation. The construction of pumped storage power station usually opens tunnels, culverts and the like, and needs to set anchor rods for support. When the prestressed anchor rod is set, the anchor rod needs to be pulled outwards so that the anchor rod is combined with the surrounding rock more densely.

[0003] The existing pulling mode is usually to pull after welding the jack and the anchor rod, and to cut the connection between the jack and the anchor rod after the anchor rod is stable. The operation is time-consuming and laborious, and the anchor rod usually has a short distance exposed to the working surface, which is not convenient for connection with the jack. Some technologies set anchor rod pulling devices, but because the working surface of the surrounding rock is usually uneven, the pulling device cannot be stably pulled along the axis of the anchor rod, which reduces the anchoring effect. Therefore, a convenient, efficient and stable anchor rod pulling device is urgently needed. CONTENT OF THE INVENTION

[0004] Therefore, the present application aims to provide a prestressed anchor rod pulling device to solve the problems mentioned in the background art.

[0005] To achieve the above purpose, the present application provides a prestressed anchor rod pulling device, which comprises a base plate, a through hole is arranged in the middle of the base plate; at least two telescopic legs are connected vertically below the base plate, have a first state of telescopic sliding and a second state of locking, and are used to abut against the working surface where the prestressed anchor rod is located; a jack is installed on the base plate and connected with a connecting rod, the connecting rod penetrates through the through hole, and the jack is used to control the reciprocating movement of the connecting rod in a direction perpendicular to the base plate; a sleeve is arranged at one end of the connecting rod away from the base plate, and the inner wall of the sleeve is provided with threads for connecting the prestressed anchor rod.

[0006] Further, the telescopic leg comprises a first leg and a second leg connected by sliding, and a locking assembly is arranged between the first leg and the second leg.

[0007] Further, the first leg is fixedly connected with the base plate, a sliding groove is arranged on the second leg, and the first leg is embedded in the sliding groove.

[0008] Further, a first connecting hole is arranged on the side wall of the first leg, a plurality of second connecting holes are arranged on the side wall of the second leg in a direction perpendicular to the base plate, and the first connecting hole and the second connecting holes are connected by a pin shaft.

[0009] Further, the side wall of the first leg is provided with a plurality of first connecting holes in a direction perpendicular to the base plate, and at least two of the first connecting holes are connected with the corresponding second connecting holes by a pin shaft.

[0010] Further, the first leg is a steel plate or a channel steel, and the second leg is a channel steel or an I-beam.

[0011] Further, the base plate is a steel plate, and one of the telescopic legs is arranged at each end of the base plate.

[0012] Further, the base plate is rectangular, and one of the telescopic legs is arranged at each corner of the base plate.

[0013] Further, the jack is a hydraulic through-jack, and the jack is connected with an oil pump.

[0014] Further, the end of the connecting rod away from the base plate is provided with a limiting block, and the sleeve is sleeved on the connecting rod, and the inner wall of the sleeve abuts against the limiting block.

[0015] As can be seen from the above, the prestressed anchor rod drawing device provided by the application comprises a base plate, a through hole is arranged in the middle of the base plate; at least two telescopic legs are connected perpendicularly below the base plate, have a first state of telescopic sliding and a second state of locking, and are used for abutting against a working surface where the prestressed anchor rod is located; a jack is installed on the base plate and connected with a connecting rod, the connecting rod penetrates through the through hole, and the jack is used for controlling the reciprocating movement of the connecting rod in a direction perpendicular to the base plate; a sleeve is arranged at the end of the connecting rod away from the base plate, the inner wall of the sleeve is provided with a thread, and the sleeve is used for connecting the prestressed anchor rod; after the sleeve is threadedly connected with the prestressed anchor rod, the drawing of the anchor rod is realized by the jack, and after the drawing is completed, the sleeve is loosened to realize separation, which is simple and convenient; the base plate and the telescopic legs play a role in supporting the jack, the length of the telescopic legs is adjusted to adapt to the uneven working surface, the base plate can be kept perpendicular to the prestressed anchor rod, the anchor rod can be pulled along the axial force, and the anchoring effect is good; the prestressed anchor rod drawing device has the advantages of simple structure, convenient disassembly and assembly, strong stability, good safety, high drawing efficiency, and good anchoring effect of the anchor rod. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 It is a structural schematic diagram of a prestressed anchor rod drawing device in the embodiments of the application.

[0018] Figure 2 Figure 1 is a structural schematic diagram of the prestressed anchor rod pulling device cooperating with the prestressed anchor rod in the embodiments of the present application.

[0019] The figure marks: 1, base plate; 1-1, through hole; 2, telescopic support leg; 2-1, first support leg; 2-2, second support leg; 2-3, first connecting hole; 2-4, second connecting hole; 2-5, sliding groove; 3, jack; 4, connecting rod; 4-1, limiting block; 5, sleeve; 6, prestressed anchor rod; 7, oil pump; 8, working face. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application is further described in detail below in combination with specific embodiments and with reference to the drawings.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by those skilled in the art to which the present disclosure belongs. The "includes" or "contains" and similar words used in the present disclosure mean that the elements or objects appearing before the words cover the elements or objects listed after the words and their equivalents, without excluding other elements or objects. The "connection" or "connection" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] Pumped storage is to use the electric energy in the valley period of electric power load to pump water to the upper reservoir, and to release the water stored in the upper reservoir to the lower reservoir for power generation in the peak period of electric power load, also known as energy storage type power generation. The construction of pumped storage power station usually opens tunnels, culverts and the like, and needs to set anchor rods for support. When setting prestressed anchor rods, the anchor rods need to be pulled outwards to make the anchor rods and surrounding rock more compact.

[0023] The existing pulling method usually adopts a jack to pull after being welded with the anchor rod, and the connection between the jack and the anchor rod is cut after the anchor rod is stable. The operation is time-consuming and laborious, and the anchor rod usually has a short distance exposed to the working face, which is not convenient for connection with the jack. Some technologies set anchor rod pulling devices, but because the working face of the surrounding rock is usually uneven, the pulling device cannot be stably pulled along the axis of the anchor rod, which will reduce the anchoring effect. Therefore, there is an urgent need for a convenient, efficient and stable anchor rod pulling device.

[0024] Hereinafter, specific embodiments will be described in combination with Figure 1 and Figure 2The technical solutions of the present application are further described in detail.

[0025] A prestressed anchor rod pulling device is provided in some embodiments of the present application, as shown in Figure 1 and Figure 2 , comprising: a base plate 1, provided with a through hole 1-1 in the middle; at least two telescopic legs 2, connected vertically below the base plate 1, having a first state of telescopic sliding and a second state of locking, used to abut against a working surface 8 where the prestressed anchor rod 6 is located; a jack 3, installed on the base plate 1, connected with a connecting rod 4, the connecting rod 4 penetrating through the through hole 1-1, the jack 3 being used to control the reciprocating movement of the connecting rod 4 in a direction perpendicular to the base plate 1; a sleeve 5, provided at the end of the connecting rod 4 away from the base plate 1, the inner wall of the sleeve 5 being provided with threads, used to connect the prestressed anchor rod 6.

[0026] As shown in Figure 1 , the base plate 1 is for example a steel plate, provided with a through hole 1-1 in the middle, used for the subsequent penetration of the connecting rod 4.

[0027] The base plate 1 is provided with telescopic legs 2 at both ends, the telescopic legs 2 having a first state of telescopic sliding and a second state of locking, as shown in Figure 2 , used to abut against the working surface 8 where the prestressed anchor rod 6 is located, and each telescopic leg 2 can be adjusted to different lengths.

[0028] The base plate 1 is provided with a jack 3, connected with a connecting rod 4, the connecting rod 4 penetrating through the through hole 1-1, the jack 3 being used to control the reciprocating movement of the connecting rod 4 in a direction perpendicular to the base plate 1.

[0029] The bottom end of the connecting rod 4 is provided with a sleeve 5, the inner wall of the sleeve 5 being provided with threads, as shown in Figure 2 , used to connect the prestressed anchor rod 6.

[0030] After the sleeve 5 is threadedly connected with the prestressed anchor rod 6, the sleeve 5 is moved by the jack 3 controlling the movement of the connecting rod 4, thereby controlling the axial movement of the anchor rod, and the pulling of the anchor rod is realized through the jack 3, and after the pulling is completed, the sleeve 5 is loosened to realize separation, which is simple and convenient, and does not need to weld the anchor rod with the jack 3, nor need to cut work.

[0031] The base plate 1 and the telescopic legs 2 play the role of supporting the jack 3, and by adjusting the length of the telescopic legs 2 to adapt to the uneven working surface 8, the base plate 1 can be kept perpendicular to the prestressed anchor rod 6, so that the pulling of the anchor rod can exert force along the axial direction, and the anchoring effect is good.

[0032] The prestressed anchor rod pulling device has the advantages of simple structure, convenient disassembly and assembly, strong stability, good safety, high pulling efficiency, and good anchor rod anchoring effect.

[0033] In some embodiments, asFigure 1 and Figure 2 As shown, the telescopic leg 2 includes a first leg 2-1 and a second leg 2-2 that are slidably connected, and a locking assembly is provided between the first leg 2-1 and the second leg 2-2.

[0034] like Figure 1 As shown, the telescopic leg 2 includes a first leg 2-1 and a second leg 2-2 that are slidably connected to achieve a first state of telescopic sliding; a locking assembly is provided between the first leg 2-1 and the second leg 2-2, and the locking assembly is, for example, a pin, a buckle or a bolt, to achieve a second locked state.

[0035] In some embodiments, as Figure 1 As shown, the first leg 2-1 is fixedly connected to the base plate 1, the second leg 2-2 is provided with a slide groove 2-5, and the first leg 2-1 is embedded in the slide groove 2-5.

[0036] like Figure 1 As shown, the first leg 2-1 is welded to the base plate 1, and the second leg 2-2 can be a channel steel with a slide groove 2-5. The first leg 2-1 is embedded in the slide groove 2-5 to realize the first state of telescopic sliding.

[0037] In some embodiments, as Figure 2 As shown, the side wall of the first leg 2-1 is provided with a first connecting hole 2-3, and the side wall of the second leg 2-2 is provided with multiple second connecting holes 2-4 along a direction perpendicular to the base plate 1, and the first connecting hole 2-3 and the second connecting hole 2-4 are connected by a pin shaft.

[0038] like Figure 2 As shown, the side wall of the first leg 2-1 is provided with a first connecting hole 2-3, and the side wall of the second leg 2-2 is provided with multiple second connecting holes 2-4 along a direction perpendicular to the base plate 1. The first connecting hole 2-3 and at least one second connecting hole 2-4 are connected by a pin shaft, and the second locked state can be achieved after determining the length of the telescopic leg 2.

[0039] In some embodiments, as Figure 1 and Figure 2 As shown, a plurality of first connection holes 2-3 are provided on the side wall of the first leg 2-1 in a direction perpendicular to the base plate 1, and at least two of the first connection holes 2-3 are connected to the corresponding second connection holes 2-4 via pins.

[0040] like Figure 1 As shown, each telescopic leg 2 is connected to the second connecting hole 2-4 by a pin by setting two first connecting holes 2-3. While limiting the length of the telescopic leg 2, rotation between the first leg 2-1 and the second leg 2-2 can be avoided, further improving the structural stability.

[0041] In some embodiments, as shown in Figure 1 the first leg 2-1 is a steel plate or a channel steel, and the second leg 2-2 is a channel steel or an I-beam.

[0042] The first leg 2-1 can be a steel plate or a channel steel, and the second leg 2-2 can be a channel steel or an I-beam.

[0043] In some embodiments, as shown in Figure 1 and Figure 2 the base plate 1 is a steel plate, and each end of the base plate 1 is provided with one telescopic leg 2.

[0044] As shown in Figure 1 , one telescopic leg 2 is provided at each end of the base plate 1, which can ensure that the base plate 1 is perpendicular to the prestressed anchor rod 6, and ensure the anchoring effect.

[0045] In some embodiments, the base plate 1 is rectangular, and one telescopic leg 2 is provided at each corner of the base plate 1.

[0046] For example, if the base plate 1 is square, one telescopic leg 2 can be provided at each corner of the base plate 1, which can further improve the structural stability of the drawing device.

[0047] In some embodiments, as shown in Figure 2 the jack 3 is a hydraulic through-jack, and the jack 3 is connected with an oil pump 7.

[0048] As shown in Figure 2 , the jack 3 is a hydraulic through-jack, which can pass through the connecting rod 4, and the jack 3 is connected with an oil pump 7 to control the movement of the connecting rod 4.

[0049] In some embodiments, as shown in Figure 2 the end of the connecting rod 4 away from the base plate 1 is provided with a limiting block 4-1, and the sleeve 5 is sleeved on the connecting rod 4, and the inner wall of the sleeve 5 abuts against the limiting block 4-1.

[0050] As shown in Figure 2 , the end of the connecting rod 4 is provided with a ring-shaped limiting block 4-1, and the sleeve 5 is sleeved on the connecting rod 4, one end of the sleeve 5 is semi-closed, and the inner wall of the sleeve 5 abuts against the limiting block 4-1 to limit the sleeve 5 from being separated from the connecting rod 4, and the other end of the sleeve 5 is hollow to be connected with the prestressed anchor rod 6.

[0051] Each embodiment in the present application is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0052] The description is presented for purposes of illustration and description, and is not intended to limit the application to the form described. Many modifications and variations will be apparent to those of ordinary skill in the art. The described embodiments were chosen in order to best illustrate the principles of the application and its practical application, and to thereby enable others skilled in the art to best utilize the application in various embodiments and with various modifications as are suited to the particular use contemplated.

[0053] Any discussion of the foregoing embodiments is intended for illustrative purposes, and is not intended to limit the scope of the application (including the claims) to the examples described. The foregoing embodiments and / or examples can be further modified and / or combined in their implementation than as described in this detailed description, and variations of aspects of the embodiments and / or examples can become apparent to those of ordinary skill in the art once the application has been described.

[0054] While the application has been described in connection with specific embodiments thereof, it will be understood that many modifications, changes, and variations will be specific embodiments thereof, it will be understood that many modifications, changes, and variations will become apparent to those of ordinary skill in the art once the application has been described.

[0055] It is intended to include all such substitutions, modifications and variations as fall within the scope of the appended claims. Accordingly, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present application shall be included in the protection scope of the present application.

Claims

1. A pre-stressed anchor rod pulling device, characterized in that, The utility model relates to a prestressed anchor rod locking device, including: A substrate is provided with a through hole in the middle; At least two telescopic legs are connected vertically below the substrate, have a telescopic sliding first state and a locked second state, and are used for abutting with a working surface where the prestressed anchor rod is located; A jack is installed on the substrate and connected with a connecting rod, the connecting rod penetrates the through hole, and the jack is used for controlling the reciprocating movement of the connecting rod in a direction perpendicular to the substrate; A sleeve is arranged at one end of the connecting rod away from the substrate, an inner wall of the sleeve is provided with a screw thread and used for connecting the prestressed anchor rod, one end of the sleeve is semi-closed, the other end is hollow, one end of the connecting rod away from the substrate is provided with a limiting block, and the sleeve is sleeved on the connecting rod and abuts against the limiting block.

2. A pre-stressed anchor puller as claimed in claim 1, wherein, The telescopic leg comprises a slidingly connected first leg and a second leg, and a locking assembly is arranged between the first leg and the second leg.

3. A pre-stressed anchor puller as claimed in claim 2, wherein, The first leg is fixedly connected with the substrate, and the second leg is provided with a sliding groove, and the first leg is embedded in the sliding groove.

4. The pre-stressed anchor rod puller device according to claim 2, wherein, A first connecting hole is arranged in the side wall of the first leg, and a plurality of second connecting holes are arranged in the side wall of the second leg in a direction perpendicular to the substrate, and the first connecting hole and the second connecting hole are connected through a pin shaft.

5. A pre-stressed anchor puller as claimed in claim 4, wherein, A plurality of first connecting holes are arranged in the side wall of the first leg in a direction perpendicular to the substrate, and at least two first connecting holes and the corresponding second connecting hole are connected through a pin shaft.

6. The pre-stressed anchor puller device of claim 2, wherein, The first leg is a steel plate or a channel steel, and the second leg is a channel steel or an I-beam.

7. The pre-stressed anchor puller device of claim 1, wherein, The substrate is a steel plate, and the substrate is provided with one telescopic leg at each end.

8. The pre-stressed anchor puller device of claim 1, wherein, The substrate is rectangular, and one telescopic leg is arranged at each corner of the substrate.

9. The pre-stressed anchor puller device of claim 1, wherein, The jack is a hydraulic through-hole jack, and the jack is connected with an oil pump.

Images