Progressive feed device for hydraulic cylinder group of hole drilling machine

Abstract

The utility model discloses a progressive feeding device of hole -making machine hydraulic cylinder group belongs to hole -making machine technical field. Progressive feeding device of hole -making machine hydraulic cylinder group, including hydraulic main cylinder, the top of hydraulic main cylinder is provided with the suspension support, and the bottom of hydraulic main cylinder is provided with the end seal, the below of end seal is provided with the push axle, wherein, one side of hydraulic main cylinder is provided with pressure control valve spare, and pressure control valve spare is connected through the thread with hydraulic main cylinder. To solve the compressibility of the existing hole -making machine hydraulic assembly internal hydraulic oil, in the use process, the system inevitably exists the internal leakage and the external leakage, thereby leading to the problem of the control precision of the feeding speed, position and force decline, and the internal leakage oil is recycled to the buffer box through the pressure relief pipe, avoids the pollution of external leakage, when detecting the pressure anomaly of oil pressure chamber, the pressure relief pipe initiates pressure relief, and the shunt pipe supplements the equivalent hydraulic oil simultaneously, maintains the constant volume of oil cavity, offsets the compressibility influence of oil.

Description

Technical Field

[0001] This utility model relates to the field of swivel drilling machine technology, specifically to a progressive feeding device for a hydraulic cylinder group of a swivel drilling machine. Background Technology

[0002] The hydraulic oil inside the existing swivel drilling machine hydraulic components has a certain degree of compressibility. During use, internal and external leakage inevitably occurs in the system, which leads to a decrease in the control accuracy of feed speed, position and force. Utility Model Content

[0003] The purpose of this invention is to provide a progressive feeding device for the hydraulic cylinder group of a swivel drilling machine. The buffer box absorbs oil pressure pulsations and suppresses piston vibration caused by pressure fluctuations. The internally leaked oil is recovered to the buffer box through the pressure relief pipe to avoid external leakage and contamination. When abnormal pressure is detected in the oil pressure chamber, the pressure relief pipe actively releases pressure, and at the same time, the diverter pipe replenishes an equal amount of hydraulic oil to maintain a constant oil chamber volume and counteract the effect of oil compressibility. This invention can solve the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a progressive feeding device for a hydraulic cylinder group of a swivel drilling machine, including a hydraulic main cylinder. A support is provided at the top of the hydraulic main cylinder, and a sealing end is provided at the bottom of the hydraulic main cylinder. A push shaft is provided below the sealing end. A pressure control valve is provided on one side of the hydraulic main cylinder, and the pressure control valve is threadedly connected to the hydraulic main cylinder. Diverter pipes are provided on both sides of the pressure control valve, and a buffer box is provided on the outer surface of the pressure control valve. A pressure relief pipe is provided at the bottom of the pressure control valve.

[0005] Preferably, a hinge is provided between the support and the hydraulic master cylinder, wherein an electrically controlled rotating shaft is provided inside the hinge, and the hydraulic master cylinder is rotatably connected to the support through the electrically controlled rotating shaft.

[0006] Preferably, the hydraulic master cylinder has an internal oil pressure chamber, and a piston is installed inside the oil pressure chamber. One end of the piston is provided with a hydraulic connecting rod, which is telescopically connected to the oil pressure chamber through the piston.

[0007] Preferably, an internal power supply module is provided above the hydraulic chamber, and a resistance probe is provided at one end of the internal power supply module. The resistance probe extends into the interior of the hydraulic connecting rod, and the hydraulic connecting rod is slidably connected to the resistance probe.

[0008] Preferably, the hydraulic chamber is connected in a through-hole with the pressure relief pipe.

[0009] Preferably, the push shaft includes a pressure sensing module and an inner coupling. The pressure sensing module is located inside the push shaft, and the push shaft is connected to the hydraulic connecting rod through the inner coupling.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. In this utility model, the buffer box absorbs oil pressure pulsation and suppresses piston vibration caused by pressure fluctuation. The internally leaked oil is recovered to the buffer box through the pressure relief pipe to avoid external leakage and pollution. When the pressure in the oil pressure chamber is detected to be abnormal, the pressure relief pipe actively releases pressure, and at the same time, the diversion pipe replenishes an equal amount of hydraulic oil to maintain a constant oil chamber volume and counteract the effect of oil compressibility.

[0012] 2. In this utility model, the resistance probe directly measures the displacement of the hydraulic connecting rod, avoiding errors caused by piston seal deformation, while the built-in pressure sensing module of the push shaft provides real-time feedback of the load force, and the pressure control valve achieves the accuracy of force control. Attached Figure Description

[0013] Figure 1 This is the overall front view of the present invention;

[0014] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0015] In the diagram: 1. Hydraulic master cylinder; 2. Support; 3. Pressure control valve; 4. Push shaft; 101. End cap; 102. Hydraulic connecting rod; 103. Internal power supply module; 104. Hydraulic chamber; 1021. Piston; 1031. Resistance probe; 201. Hinge; 202. Electrically controlled rotating shaft; 301. Buffer box; 302. Diverter pipe; 303. Pressure relief pipe; 401. Pressure sensing module; 402. Internal coupling. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] To address the issue that the hydraulic oil inside the existing vortex boring machine's hydraulic components has a certain degree of compressibility, inevitably leading to internal and external leakage during operation, and consequently reducing the control accuracy of feed speed, position, and force; please refer to... Figure 1-2 The present invention provides the following solution:

[0018] The progressive feeding device of the hydraulic cylinder group of the swivel drilling machine includes a hydraulic main cylinder 1. A support 2 is provided on the top of the hydraulic main cylinder 1, a sealing end 101 is provided at the bottom of the hydraulic main cylinder 1, and a push shaft 4 is provided below the sealing end 101. A pressure control valve 3 is provided on one side of the hydraulic main cylinder 1. The pressure control valve 3 is connected to the hydraulic main cylinder 1 by a thread. A diversion pipe 302 is provided on both sides of the pressure control valve 3. A buffer box 301 is provided on the outer surface of the pressure control valve 3. A pressure relief pipe 303 is provided at the bottom of the pressure control valve 3.

[0019] In this embodiment, hydraulic oil is injected into the oil pressure chamber 104 through the pressure control valve, pushing the piston 1021 and the hydraulic connecting rod 102 to move downward. The hydraulic connecting rod 102 drives the push shaft 4 to output feed force through the internal coupling 402. The pressure sensing module 401 monitors the load force change in real time. Based on the load feedback from the pressure sensing module 401, the pressure control valve 3 dynamically adjusts the oil inlet / outlet volume of the oil pressure chamber 104 through the diverter pipe 302. The buffer box 301 absorbs oil pressure pulsation and suppresses piston vibration caused by pressure fluctuation. The internally leaked oil is recovered to the buffer box 301 through the pressure relief pipe 303 to avoid external leakage and contamination. When the pressure of the oil pressure chamber 104 is detected to be abnormal, the pressure relief pipe 303 actively releases pressure, and at the same time, the diverter pipe 302 replenishes an equal amount of hydraulic oil to maintain a constant oil chamber volume and counteract the effect of oil compressibility.

[0020] A hinge 201 is provided between the support 2 and the hydraulic master cylinder 1. An electrically controlled rotating shaft 202 is installed inside the hinge 201. The hydraulic master cylinder 1 is rotatably connected to the support 2 via the electrically controlled rotating shaft 202. A hydraulic pressure chamber 104 is provided inside the hydraulic pressure chamber 104. A piston 1021 is installed inside the hydraulic pressure chamber 104. A hydraulic connecting rod 102 is provided at one end of the piston 1021. The hydraulic connecting rod 102 is telescopically connected to the hydraulic pressure chamber 104 via the piston 1021. A [missing information - likely a design feature] is provided above the hydraulic pressure chamber 104. An internal power supply module 103 is provided, and a resistance probe 1031 is provided at one end of the internal power supply module 103. The resistance probe 1031 extends into the interior of the hydraulic connecting rod 102. The hydraulic connecting rod 102 is slidably connected to the resistance probe 1031. The oil pressure chamber 104 is connected to the pressure relief pipe 303. The push shaft 4 includes a pressure sensing module 401 and an inner coupling 402. The pressure sensing module 401 is located inside the push shaft 4. The push shaft 4 is connected to the hydraulic connecting rod 102 through the inner coupling 402.

[0021] In this embodiment, the resistance probe 1031 of the internal power module 103 is embedded inside the hydraulic connecting rod 102. The resistance changes with the extension and retraction of the connecting rod. The displacement of the hydraulic connecting rod is accurately calculated by the amount of resistance change, forming the first-level position closed loop.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A progressive feed device for a hydraulic cylinder group of a swivel drilling machine, characterized in that, The system includes a hydraulic master cylinder (1), a support (2) is provided on the top of the hydraulic master cylinder (1), a sealing end (101) is provided at the bottom of the hydraulic master cylinder (1), a push shaft (4) is provided below the sealing end (101), a pressure control valve (3) is provided on one side of the hydraulic master cylinder (1), the pressure control valve (3) is connected to the hydraulic master cylinder (1) by a thread, a diverter pipe (302) is provided on both sides of the pressure control valve (3), a buffer box (301) is provided on the outer surface of the pressure control valve (3), and a pressure relief pipe (303) is provided at the bottom of the pressure control valve (3).

2. The progressive feed device for the hydraulic cylinder group of the swivel drilling machine according to claim 1, characterized in that: A hinge (201) is provided between the support (2) and the hydraulic master cylinder (1). An electrically controlled rotating shaft (202) is provided inside the hinge (201). The hydraulic master cylinder (1) is rotatably connected to the support (2) through the electrically controlled rotating shaft (202).

3. The progressive feed device for the hydraulic cylinder group of the swivel drilling machine according to claim 1, characterized in that: The hydraulic master cylinder (1) is provided with an oil pressure chamber (104) inside, and a piston (1021) is provided inside the oil pressure chamber (104). A hydraulic connecting rod (102) is provided at one end of the piston (1021), and the hydraulic connecting rod (102) is telescopically connected to the oil pressure chamber (104) through the piston (1021).

4. The progressive feed device for the hydraulic cylinder group of the swivel drilling machine according to claim 3, characterized in that: An internal power supply module (103) is provided above the hydraulic chamber (104). A resistance probe (1031) is provided at one end of the internal power supply module (103). The resistance probe (1031) extends into the interior of the hydraulic connecting rod (102), and the hydraulic connecting rod (102) is slidably connected to the resistance probe (1031).

5. The progressive feed device for the hydraulic cylinder group of the swivel drilling machine according to claim 4, characterized in that: The hydraulic chamber (104) is connected to the pressure relief pipe (303).

6. The progressive feed device for the hydraulic cylinder group of the swivel drilling machine according to claim 5, characterized in that: The push shaft (4) includes a pressure sensing module (401) and an inner coupling (402). The pressure sensing module (401) is located inside the push shaft (4), and the push shaft (4) is connected to the hydraulic connecting rod (102) through the inner coupling (402).

Images