A hydraulic anchor limit device for a hydraulic anchor drill

Abstract

The present invention relates to the technical field of hydraulic bolt drills, and specifically relates to a hydraulic bolt limiting device for a hydraulic bolt drill, including: a fixing plate, a drilling member is fixed to the top of the fixing plate, and a bolt is fixed to the bottom of the drilling member. A winding shaft is rotatably arranged above the fixing plate, a winding rope is arranged on the surface of the winding shaft, a limiting plate is fixed to the bottom end of the winding rope, and a drilling depth detection component is arranged at the bottom end of the limiting plate; The beneficial effect is that by driving the winding shaft to rotate forward and backward by a motor, the length of the winding rope extending out of the dust-proof cover is controlled by the rotation of the winding shaft, thereby controlling the height of the limiting plate. The distance from the limiting plate to the bottom end of the bolt is the predetermined drilling depth. A drilling depth detection component is arranged at the bottom end of the limiting plate. When the drilling depth reaches the predetermined depth, the bottom end of the limiting plate presses against the ground, and the drilling depth detection component can send a signal to make the drilling member stop automatically, greatly reducing the height of the entire hydraulic drill and having an automatic stop function at the same time.

Description

Technical Field

[0001] The present invention relates to the field of hydraulic bolt drills, and specifically to a hydraulic bolt limiting device for a hydraulic bolt drill. Background Art

[0002] Hydraulic bolt drills are usually used for support operations in underground projects. The hydraulic bolt limiting device is a device used to control the drilling depth during the drilling process. Traditional bolts cannot well limit the bolt depth during drilling, and manual multiple and cumbersome depth measurements are required, which greatly affects the drilling efficiency.

[0003] In the prior art, in a utility model patent with the publication number CN217501720U reviewed and published by the State Intellectual Property Office of China, a coal mine bolt drilling depth limiting device is mentioned. This device drives the limiting plate on the threaded rod to move automatically through a driving member, thereby adjusting the distance between the bottom end of the bolt and the limiting plate, and further controlling the depth of the hole that the bolt needs to drill. There is no need for manual adjustment, the operation is simple, it is convenient to quickly adjust the depth of the bolt drilling, and it is convenient for people to use.

[0004] However, in the prior art, the height adjustment uses the method of matching a threaded rod with a threaded hole. Under the working principle of this device, the height of the entire device is basically equal to twice the height of the bolt. This leads to the fact that when drilling holes with a very large depth, the height of the entire device will be particularly high. When operating in some areas such as under bridges and in tunnels, it will be impossible to operate due to height restrictions. Summary of the Invention

[0005] The purpose of the present invention is to provide a hydraulic bolt limiting device for a hydraulic bolt drill to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A hydraulic bolt limiting device for a hydraulic bolt drill, including: a fixing plate, a drilling member is fixed at the top end of the fixing plate, a bolt is fixed at the bottom end of the drilling member, a winding shaft is rotatably arranged above the fixing plate, a winding rope is arranged on the surface of the winding shaft, a limiting plate is fixed at the bottom end of the winding rope, and a drilling depth detection component is arranged at the bottom end of the limiting plate.

[0007] Preferably, the drilling depth detection component includes: a fixed contact, the top end of the fixed contact is fixed on the inner wall surface of the top end of the contact slot, the contact slot is opened on the bottom surface of the limiting plate, a spring is sleeved on the surface of the fixed contact, the top end of the spring is fixed on the top surface of the inner wall of the contact slot, the bottom end of the spring is fixed with a moving contact, the moving contact has a "convex"-shaped circular rod structure, the bottom end of the moving contact extends out of the contact slot, and the thin rod part of the moving contact is inserted into the spring.

[0008] Preferably, a winching mechanism bracket and a motor bracket are fixed to the top end of the fixing plate. There are two sets of winching mechanism brackets, and each set has two winching mechanism brackets. The two sets of winching mechanism brackets are symmetrically distributed with respect to the drilling member. A shaft hole is formed on the surface of the winching mechanism bracket. A winching shaft is rotatably connected in the shaft hole of each set of winching mechanism brackets. A dust cover is fixed between the two winching mechanism brackets in each set. An opening is formed on the bottom surface of the dust cover. A through hole is formed at the position of the dust cover corresponding to the winching shaft. Sliding bearings are provided in both the shaft hole on the surface of the winching mechanism bracket and the through hole on the surface of the winching shaft. The sliding bearing is sleeved on the surface of the winching shaft.

[0009] Preferably, a plug hole is formed on the surface of the winching shaft. One end of the winching rope is fixedly plugged in the plug hole. A part of the winching rope is coiled in the dust cover. The other end of the winching rope extends out of the opening. The end of the winching rope extending out of the opening is movably plugged in a rope hole. The rope hole is formed on the surface of the fixing plate.

[0010] Preferably, a counterweight is fixed to the top end of the limiting plate.

[0011] Preferably, a motor is fixed to the surface of the motor bracket. A driving gear is sleeved and fixed on the transmission shaft of the motor. The driving gear meshes with a driven gear. The driven gear is sleeved and fixed on the surface of the winching shaft.

[0012] Preferably, a scale is formed on the surface of the anchor rod.

[0013] Preferably, a power supply is arranged in the limiting plate, one end of which is connected to a fixed contact through a cable and the other end is connected to a moving contact through a cable, and a signal transmitter is connected in the circuit.

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

[0015] The hydraulic anchor rod limit device for a hydraulic anchor rod drilling rig proposed by the present invention drives the winching shaft to rotate forward and backward through a motor, controls the length of the winching rope extending out of the dust cover by the rotation of the winching shaft, thereby controlling the height of the limiting plate. The distance from the limiting plate to the bottom end of the anchor rod is the predetermined drilling depth. A drilling depth detection component is arranged at the bottom end of the limiting plate. When the drilling depth reaches the predetermined depth, the bottom end of the limiting plate presses against the ground, and the drilling depth detection component can send a signal to make the drilling member stop automatically, greatly reducing the height of the entire hydraulic drilling rig and having an automatic stop function at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is a schematic cross-sectional structural diagram of the present invention;

[0018] Figure 3 is Figure 2Schematic enlarged view of the structure at position A in [device name].

[0019] In the figure: fixing plate 1, limiting plate 2, drilling member 3, winding mechanism support 4, dust cover 5, winding shaft 6, driven gear 7, driving gear 8, motor 9, motor support 10, anchor bolt 11, winding rope 12, insertion hole 13, opening 14, rope hole 15, counterweight 16, contact point groove 17, fixed contact 18, spring 19, moving contact 20. Detailed implementation manners

[0020] In order to clearly and completely describe the objectives, technical solutions of the present invention and make the advantages more clearly understood, the following further elaborates on the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are merely used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0021] Embodiment 1

[0022] Please refer to Figures 1-3 , the present invention provides a technical solution: a hydraulic anchor limiting device for a hydraulic anchor drill, comprising: a fixing plate 1, a drilling member 3 is fixed at the top end of the fixing plate 1, and an anchor bolt 11 is fixed at the bottom end of the drilling member 3. It is characterized in that: a winding shaft 6 is rotatably arranged above the fixing plate 1, a winding rope 12 is arranged on the surface of the winding shaft 6, a limiting plate 2 is fixed at the bottom end of the winding rope 12, and a drilling depth detection component is arranged at the bottom end of the limiting plate 2.

[0023] Embodiment 2

[0024] On the basis of Embodiment 1, in order to achieve automatic shutdown of the drilling member after the drilling depth reaches the predetermined drilling depth, a drilling depth detection component is arranged at the bottom end of the limiting plate 2. The drilling depth detection component includes: a fixed contact 18, the top end of the fixed contact 18 is fixed on the inner wall surface of the top end of the contact point groove 17, the contact point groove 17 is opened on the bottom surface of the limiting plate 2, a spring 19 is sleeved on the surface of the fixed contact 18, the top end of the spring 19 is fixed on the top surface of the contact point groove 17, the bottom end of the spring 19 is fixed with a moving contact 20, the moving contact 20 has a "convex"-shaped circular rod structure, the bottom end of the moving contact 20 extends out of the contact point groove 17, the thin rod part of the moving contact 20 is inserted into the spring 19, a power supply with one end connected to the fixed contact 18 through a cable and the other end connected to the moving contact 20 through a cable is arranged in the limiting plate 2, and a signal transmitter is connected in the circuit.

[0025] In actual use, rotate the transmission shaft of the motor 9 fixed on the surface of the motor bracket 10. The transmission shaft of the motor 9 drives the driving gear 8 to rotate. The driving gear 8 drives the driven gears 7 on both sides, thereby driving the winding shaft 6 to rotate. The rotation of the winding shaft 6 changes the distance that the winding rope 12 inserted in the insertion hole 13 extends from the opening 14 formed on the surface of the dust cover 5. Further, by controlling the length of the winding rope 12 at the bottom end of the rope hole 15, the height of the limiting plate 2 is changed. The predetermined drilling depth is set by visually observing the scale formed on the surface of the anchor rod 11 at the bottom end of the limiting plate 2. The distance from the bottom end of the limiting plate 2 to the bottom end of the anchor rod 11 is the predetermined drilling depth. After the predetermined drilling depth is set, the drilling member 3 is started to perform drilling. When the drilling depth reaches the predetermined drilling depth, under the weight of the counterweight 16, the moving contact 20 is completely pushed into the contact groove 17, the spring 19 is compressed, the top end of the moving contact 20 contacts the bottom end of the fixed contact 18, and a circuit is formed with the power supply and the signal transmitter provided in the limiting plate 2. The signal transmitter emits a signal to stop the operation of the drilling member 3.

[0026] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic anchor limit device for a hydraulic anchor drill, comprising: Fixing plate (1), a drilling member (3) is fixed to the top end of the fixing plate (1), an anchor rod (11) is fixed to the bottom end of the drilling member (3), and it is characterized in that: a winding shaft (6) is rotatably arranged above the fixing plate (1), a winding rope (12) is arranged on the surface of the winding shaft (6), a limiting plate (2) is fixed to the bottom end of the winding rope (12), and a drilling depth detection component is arranged at the bottom end of the limiting plate (2); A winding mechanism support (4) and a motor support (10) are fixed to the top end of the fixing plate (1). There are two groups of winding mechanism supports (4), and each group of winding mechanism supports (4) has two. The two groups of winding mechanism supports (4) are symmetrically distributed with respect to the drilling member (3). A shaft hole is opened on the surface of the winding mechanism support (4). A winding shaft (6) is rotatably connected in the shaft hole of each group of winding mechanism supports (4). A dust cover (5) is fixed between the two winding mechanism supports (4) in each group. An opening (14) is opened on the bottom surface of the dust cover (5). A through hole is opened at the position of the dust cover (5) corresponding to the winding shaft (6). Sliding bearings are arranged in the shaft hole on the surface of the winding mechanism support (4) and the through hole on the surface of the winding shaft (6), and the sliding bearings are sleeved on the surface of the winding shaft (6); A motor (9) is fixed to the surface of the motor support (10). A driving gear (8) is sleeved and fixed on the transmission shaft of the motor (9). The driving gear (8) meshes with a driven gear (7). The driven gear (7) is sleeved and fixed on the surface of the winding shaft (6).

2. The hydraulic anchor limit device for a hydraulic anchor drill according to claim 1, characterized in that: The drilling depth detection component includes: a fixed contact (18). The top end of the fixed contact (18) is fixed on the inner wall surface of the top end of the contact slot (17). The contact slot (17) is opened on the bottom surface of the limiting plate (2). A spring (19) is sleeved on the surface of the fixed contact (18). The top end of the spring (19) is fixed on the top surface of the contact slot (17). The bottom end of the spring (19) is fixed with a moving contact (20). The moving contact (20) is in a "convex"-shaped circular rod structure. The bottom end of the moving contact (20) extends out of the contact slot (17). The thin rod part of the moving contact (20) is inserted into the spring (19).

3. A hydraulic anchor rod limiting device for a hydraulic anchor rod drilling rig according to claim 1, characterized in that: A plug hole (13) is opened on the surface of the winding shaft (6). One end of the winding rope (12) is inserted and fixed in the plug hole (13). A part of the winding rope (12) is coiled in the dust cover (5). The other end of the winding rope (12) extends out of the opening (14). The end of the winding rope (12) extending out of the opening (14) is movably inserted into a rope hole (15). The rope hole (15) is opened on the surface of the fixing plate (1).

4. A hydraulic anchor rod limiting device for a hydraulic anchor rod drill according to claim 1, characterized in that: A counterweight (16) is fixed to the top end of the limiting plate (2).

5. A hydraulic anchor limit device for a hydraulic anchor drill according to claim 1, characterized in that: Scales are opened on the surface of the anchor rod (11).

6. The hydraulic anchor rod limiting device for a hydraulic anchor rod drill according to claim 2, wherein: A power supply with one end connected to the fixed contact (18) and the other end connected to the moving contact (20) by wires is arranged in the limiting plate (2), and a signal transmitter is connected in the circuit.

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