A single-arm hydraulic drilling rig

Abstract

The present invention relates to a single-arm hydraulic tunneling drilling trolley applied to the field of rock drilling trolleys. In conjunction with the temperature control of the hydraulic oil tank in the prior art, the present invention further provides a directional compensation sleeve outside each oil cylinder. On the one hand, the steering of the temperature variable tube can be controlled according to the actual environmental requirements, so that the temperature of the hydraulic oil in the oil cylinder can be specifically regulated and compensated to keep the hydraulic oil at a stable temperature. On the other hand, before the telescopic end of the oil cylinder enters the oil chamber of the oil cylinder, the surface thereof can also be temperature compensated to further reduce the influence of the external environment on the hydraulic oil in the oil cylinder. Compared with the prior art which only performs temperature compensation on the hydraulic oil in the hydraulic oil tank, the accuracy of the temperature control of the hydraulic oil is greatly improved, and the viscosity of the hydraulic oil is easily controlled to be too high or too low, so that the hydraulic system is more accurate in controlling the operation of the rock drilling machine components, and the drill bit is not easily damaged due to the change in the viscosity of the hydraulic oil.

Description

Technical Field

[0001] The present invention relates to a single-arm hydraulic excavation and rock drilling trolley, in particular to a single-arm hydraulic excavation and rock drilling trolley applied in the field of rock drilling trolleys. Background Art

[0002] When a drilling rig is in use, it often requires the coordination of multiple cylinders to control the operating arm to approach the target position for construction. In extreme weather conditions, such as low temperatures in winter or high temperatures in summer, the hydraulic system is prone to failure due to excessively high or low temperatures. In low temperature environments, the viscosity of the hydraulic oil increases, causing the rotational resistance to exceed the rotational pressure during normal drilling, which can easily cause the drill to get stuck. When the temperature is too high, the viscosity decreases and the lubrication performance decreases, resulting in severe wear of the cylinder and a reduced lifespan.

[0003] In the prior art, in order to solve the above-mentioned influence of low temperature or high temperature on hydraulic oil, a temperature control unit is generally provided on the hydraulic oil tank to control the temperature of the hydraulic oil so that its viscosity is not easily changed excessively and stable performance is maintained. However, when the external ambient temperature is abnormal, when the hydraulic oil flows between the cylinder and the hydraulic oil tank, it will pass through the slender oil pipe exposed to the air, resulting in the temperature of the hydraulic oil approaching the ambient temperature when it reaches the target cylinder. That is, the effect of maintaining stable performance of the hydraulic oil by regulating the temperature of the hydraulic oil in the hydraulic oil tank is poor. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the effect of only controlling the temperature of the hydraulic oil in the hydraulic oil tank is poor, and the hydraulic oil is still easily affected by the ambient temperature and has a viscosity that is too low or too high, resulting in the inability of the rock drilling rig to operate accurately and stably.

[0005] In order to solve the above problems, the present invention provides a single-arm hydraulic excavation drilling trolley, comprising a frame, a cab with an integrated control center is arranged at the upper left end of the frame, a roof is installed at the upper end of the cab through a hydraulic cylinder, a walking assembly is installed at the bottom of the frame, a leg assembly is also installed at the bottom of the frame, an electric motor oil pump assembly, an air pump assembly, a water pump assembly and a cable drum assembly are also installed at the upper right end of the frame, an operating arm is installed at the front end of the frame, and a hydraulic system is also arranged at the front end of the frame;

[0006] The operating arm includes an arm support seat fixedly connected to the frame, a telescopic arm rotatably connected to the arm support seat through a universal joint, and a compensating cylinder located above the telescopic arm, a rotating cylinder, a swivel seat and a propulsion and pitching cylinder connected to each other are arranged in sequence between the front end of the telescopic arm and the lower end of the compensating cylinder, the propulsion and pitching cylinder is hinged to the lower end of the compensating cylinder, the upper end of the swivel seat is hinged to the compensating cylinder, a pitching cylinder is installed between the arm support seat and the lower end of the telescopic arm, a translation cylinder is installed between the upper end of the telescopic arm and the swivel seat of the rotating cylinder, a propulsion beam assembly is slidably connected to the upper end of the fixed section of the compensation cylinder, the extended end of the compensation cylinder is fixedly connected to the bottom of the propulsion beam assembly, a rock drill assembly driven by the propulsion cylinder is fixedly installed near the upper end of the propulsion beam assembly near the frame, a middle fiber support assembly is slidably connected to the upper end of the propulsion beam assembly, a drum assembly is also arranged on the right side of the rock drill assembly, and the drum assembly, the rock drill assembly and the middle fiber support assembly are connected to the propulsion cylinder through a wire rope;

[0007] The hydraulic system includes a pitch cylinder, a translation cylinder, a rotating cylinder and a compensation cylinder, a hydraulic oil tank located on the frame, and an oil pipe connecting the hydraulic oil tank and the two fluid guide ports of each cylinder. The outer ends of the pitch cylinder, the translation cylinder, the rotating cylinder and the compensation cylinder are all provided with directional compensation sleeves, and the directional compensation sleeves include an inner movable sleeve and an outer compensation ring. Two heat-conducting strips and two support rods are fixedly connected between the inner movable sleeve and the outer movable sleeve. Temperature sensors are installed at the ends of the pitch cylinder, the translation cylinder, the rotating cylinder and the compensation cylinder, and the temperature sensors are connected to the control center signal.

[0008] In the above-mentioned single-arm hydraulic tunneling drilling rig, by arranging a directional compensation sleeve outside each oil cylinder, the temperature of the hydraulic oil in the oil cylinder can be regulated and compensated in a targeted manner to keep the hydraulic oil at a stable temperature. Compared with the prior art in which only the temperature compensation treatment of the hydraulic oil in the hydraulic oil tank is performed, the accuracy of the hydraulic oil temperature control is greatly improved, and it is convenient to control the viscosity of the hydraulic oil so that it is not easy to be too high or too low, so that the hydraulic system is more accurate in controlling the operation of the rock drill components, and at the same time, it is not easy for the drill bit to be damaged due to changes in the viscosity of the hydraulic oil.

[0009] As a further improvement of the present application, the outer compensation ring is sleeved outside the extended end of the oil cylinder, and the inner movable sleeve is sleeved outside the fixed end of the oil cylinder, facing the two cavities in the fixed end and located between the two liquid guide ports.

[0010] As a further improvement of the present application, the up and down pitch angles of the telescopic arm are 60° and 30° respectively, and the left and right swing angles of the telescopic arm are ±35°.

[0011] As a further improvement of the present application, the inner movable sleeve includes a temperature control ring and a bearing ring fixedly connected to one end of the temperature control ring away from the outer compensation ring. A plurality of temperature variable tubes are rotatably arranged inside the outer compensation ring. The ends of the plurality of temperature variable tubes extend outside the temperature control ring and are connected to the bearing ring through an electric rotating shaft.

[0012] As a further improvement of the present application, the temperature control ring includes an outer insulation layer and a regulating ring fixedly connected to the inner wall of the outer insulation layer. The regulating ring and the outer compensation ring are both hollow heat-conducting structures, and the two are connected by a heat-conducting strip. The inside of both is saturated with temperature-regulating water. A micro water pump is installed on one of the heat-conducting strips, and the micro water pump is connected to the control center signal.

[0013] As a further improvement of the present application, the two radial inner walls of the regulating ring are fixedly connected with a plurality of guide strips, and the plurality of guide strips on the two radial inner walls are cross-distributed with each other, and the plurality of temperature-variable tubes and the plurality of guide strips are spaced apart from each other.

[0014] As a further improvement of the present application, a plurality of arcuate panels respectively matching with a plurality of temperature-variable tubes are fixedly connected to the control ring, and the portion of the temperature-variable tube located in the arcuate panels is not less than half of the volume of the temperature-variable tube.

[0015] As a further improvement of the present application, the temperature variable tube includes two heat-conducting layers, a semiconductor refrigeration plate located between the two heat-conducting layers, and two insulation plates fixedly connected between the two heat-conducting layers. The semiconductor refrigeration plate is located between the two insulation plates, and the heat-conducting layers are made of high thermal conductivity materials.

[0016] In summary, in conjunction with the temperature control method of the hydraulic oil tank in the prior art, the present solution also sets a directional compensation sleeve outside each oil cylinder. On the one hand, the direction of the temperature variable tube can be controlled according to the actual environmental requirements, and then the temperature of the hydraulic oil in the oil cylinder can be controlled and compensated in a targeted manner to keep the hydraulic oil at a stable temperature. On the other hand, before the telescopic end of the oil cylinder enters the oil chamber of the oil cylinder, its surface can also be temperature compensated to further reduce the influence of the external environment on the hydraulic oil in the oil cylinder. Compared with the prior art which only performs temperature compensation on the hydraulic oil in the hydraulic oil tank, the accuracy of the temperature control of the hydraulic oil is greatly improved, and it is convenient to control the viscosity of the hydraulic oil so that it is not easy to be too high or too low, so that the hydraulic system can be more accurate in controlling the operation of the rock drill components, and at the same time, it is not easy to damage the drill bit due to changes in the viscosity of the hydraulic oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of the first embodiment of the present application;

[0018] Figure 2 This is a front view of the first embodiment of the present application;

[0019] Figure 3 This is a front view of the first embodiment of the present application when the roof is raised and the leg assembly lifts up the vehicle;

[0020] Figure 4 This is a front schematic diagram of the operating arm of the first embodiment of the present application;

[0021] Figure 5 This is a schematic diagram of the pitch range of the operating arm of the first embodiment of the present application;

[0022] Figure 6 This is a schematic diagram of the swing range of the operating arm of the first embodiment of the present application;

[0023] Figure 7 This is a schematic diagram of a cylinder equipped with a directional compensation sleeve according to the first embodiment of the present application;

[0024] Figure 8 A three-dimensional diagram of a directional compensation sleeve according to a first embodiment of the present application;

[0025] Fig. 9 This is a schematic diagram of a radial cross section of an inner movable sleeve according to a first embodiment of the present application;

[0026] Fig.10 This is a cross-sectional schematic diagram of a temperature-variable tube according to a first embodiment of the present application;

[0027] Fig.11 This is a schematic diagram of a radial cross section of an inner movable sleeve according to a second embodiment of the present application;

[0028] Fig.12 This is a schematic diagram of a radial cross section of the inner moving sleeve after the temperature variable tube rotates when temperature compensation is required in the second embodiment of the present application;

[0029] Fig.13 This is a schematic diagram of the internal transverse cross-section of the control tube of the second embodiment of the present application.

[0030] Description of the numbers in the figure:

[0031] 1 outrigger assembly, 2 walking assembly, 3 cab, 4 frame, 5 cable drum assembly, 7 roof, 8 operating arm, 81 propulsion beam assembly, 82 telescopic arm, 83 compensation cylinder, 801 rock drill assembly, 802 middle fiber support assembly, 803 rotating cylinder, 804 slewing seat, 805 propulsion and pitch cylinder;

[0032] 91 temperature control ring, 92 external compensation ring, 93 heat conduction strip, 94 support rod, 95 bearing ring, 911 external temperature insulation layer, 912 regulating ring, 10 temperature variable tube, 101 heat conduction layer, 102 semiconductor refrigeration sheet, 103 heat insulation board, 11 guide strip. DETAILED DESCRIPTION

[0033] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0034] The first implementation method:

[0035] Figure 1-2A single-arm hydraulic drilling rig is shown, comprising a frame 4, a cab 3 with an integrated control center is arranged at the upper left end of the frame 4, and a roof 7 is installed at the upper end of the cab 3 through a hydraulic cylinder. Figure 3 When in use, the lifting height of the roof 7 can be selectively raised according to actual needs or construction environment. For example, when passing through lanes of different heights, the height of the roof can be adjusted to smoothly pass through. A walking assembly 2 is installed at the bottom of the frame 4, and a leg assembly 1 is also installed at the bottom of the frame 4. During construction, it can be moved by the leg assembly 1. An electric motor oil pump assembly, an air pump assembly, a water pump assembly and a cable drum assembly 5 are also installed at the upper right end of the frame 4. An operating arm 8 is installed at the front end of the frame 4, and a hydraulic system is also provided at the front end of the frame 4.

[0036] like Figure 4 The operating arm 8 includes an arm support seat fixedly connected to the frame 4, a telescopic arm 82 rotatably connected to the arm support seat through a universal joint, and a compensation cylinder 83 located above the telescopic arm 82. A pitch cylinder is installed between the arm support seat and the lower end of the telescopic arm 82, a translation cylinder is installed between the upper end of the telescopic arm 82 and the swivel seat of the rotating cylinder 803, and a swing cylinder is installed between the arm support seat and the side of the telescopic arm 82. Figure 6 , the left and right swing angle of the telescopic arm 82 is ±35°; Figure 5 The telescopic arm 82 is pitched up and down as a whole by the pitch cylinder, and the pitch angles are 60° and 30° respectively, so that it has a large operating range, which is convenient for the rock drill assembly 801 to perform construction operations.

[0037] A rotating cylinder 803, a swivel seat 804 and a propulsion and pitching cylinder 805 connected to each other are arranged in sequence between the front end of the telescopic arm 82 and the lower end of the compensation cylinder 83. The propulsion and pitching cylinder 805 is hinged to the lower end of the compensation cylinder 83, and the upper end of the swivel seat 804 is rotatably connected to the compensation cylinder 83. The upper end of the fixed section of the compensation cylinder 83 is slidably connected to the propulsion beam assembly 81, and the elongated end of the compensation cylinder 83 is fixedly connected to the bottom of the propulsion beam assembly 81, so that the elongation and shortening of the compensation cylinder 83 can control the forward and backward movement of the propulsion beam assembly 81 as a whole, thereby realizing the lateral stroke compensation of the rock drill assembly 801, so that the operating range of the rock drilling trolley is larger, and During construction, the frequency of the position movement of the rock drilling trolley can be effectively reduced, reducing the impact on work efficiency caused by the large size of the rock drilling trolley and the inconvenient position adjustment. A rock drill assembly 801 driven by a propulsion cylinder is fixedly installed near the upper end of the frame 4 of the propulsion beam assembly 81, and a middle fiber support assembly 802 is slidably connected to the upper end of the propulsion beam assembly 81. A drum assembly is also arranged on the right side of the rock drill assembly 801. The drum assembly, the rock drill assembly 801 and the middle fiber support assembly 802 are connected to the propulsion cylinder through a wire rope. Through the cooperation of the above-mentioned cylinders, the rock drill assembly 801 can be controlled to the left and right, up and down, forward and backward, etc., which is convenient for flexible construction.

[0038] The hydraulic system includes a pitch cylinder, a translation cylinder, a rotating cylinder 803 and a compensation cylinder 83, a hydraulic oil tank located on the frame 4, and an oil pipe connecting the hydraulic oil tank and two liquid guide ports of each cylinder, and a control valve installed at the oil pipe interface. The outer ends of the pitch cylinder, the translation cylinder, the rotating cylinder 803 and the compensation cylinder 83 are all sleeved with directional compensation sleeves. The directional compensation sleeve includes an inner movable sleeve and an outer compensation ring 92. The outer compensation ring 92 is sleeved on the outside of the extension end of the cylinder, so that when the extension end moves inward and outward at the fixed end, it can be temperature compensated by the outer compensation ring 92 before entering the oil chamber, thereby reducing the temperature difference between it and the hydraulic oil in the oil chamber, and further reducing the influence of the external temperature on the hydraulic oil in the cylinder. The inner movable sleeve is sleeved on the outside of the fixed end of the cylinder, facing the two cavities in the fixed end and located between the two liquid guide ports, so that the inner movable sleeve can protect the cylinder and form an insulation layer on the one hand, thereby reducing the external temperature on its internal oil. The temperature of the hydraulic oil in the cavity can be controlled and compensated at the same time. Two heat-conducting strips 93 and two support rods 94 are fixedly connected between the inner sleeve and the outer sleeve. Temperature sensors are installed at the ends of the pitch cylinder, the translation cylinder, the rotation cylinder 803 and the compensation cylinder 83. The temperature sensor is connected to the control center signal by arranging a directional compensation sleeve outside each cylinder. When the temperature sensor detects that the temperature in the corresponding cylinder is too low or too high, the temperature of the hydraulic oil in the cylinder can be regulated and compensated in a targeted manner to keep the hydraulic oil at a stable temperature. Compared with the prior art that only temperature compensation is performed on the hydraulic oil in the hydraulic oil tank, the accuracy of the temperature control of the hydraulic oil is greatly improved, and the viscosity of the hydraulic oil is not easy to be too high or too low, so that the hydraulic system is more accurate in controlling the operation of the rock drill component 801, and the drill bit is not easily damaged due to changes in the viscosity of the hydraulic oil.

[0039] It is worth noting that for the entire drilling rig, the hydraulic system is not only the contents recorded above, but also includes the steering cylinder, axle drive, outrigger cylinder, cable drum rotation motor, etc. designed during the driving and operation of the drilling rig. Since this part of the content is existing technology, it will not be elaborated in detail.

[0040] The temperature sensor can be set with two temperature thresholds, one is a low temperature threshold and the other is a high temperature threshold. The specific values ​​can be set according to actual needs.

[0041] like Figure 8 and Fig. 9 The inner movable sleeve includes a temperature control ring 91 and a bearing ring 95 fixedly connected to the end of the temperature control ring 91 away from the outer compensation ring 92. A plurality of temperature-changing tubes 10 are rotatably arranged in the outer compensation ring 92. Fig.10The temperature-variable tube 10 includes two heat-conducting layers 101, a semiconductor refrigeration sheet 102 located between the two heat-conducting layers 101, and two heat-insulating plates 103 fixedly connected between the two heat-conducting layers 101. The heat-insulating plates 103 are mainly used for heat insulation, so that the cold and heat at both ends of the semiconductor refrigeration sheet 102 are not easy to exchange heat along the heat-conducting layer 101, which is convenient for stabilizing the temperature of the hydraulic oil during cooling or refrigeration. The semiconductor refrigeration sheet 102 is located between the two heat-insulating plates 103, and the heat-conducting layer 101 is made of a high thermal conductivity material, so that the heat or cold generated by the semiconductor refrigeration sheet 102 inside can be quickly transferred to one side of the oil cylinder during cooling or heating, thereby accelerating the temperature compensation speed of the hydraulic oil. The ends of multiple temperature-variable tubes 10 extend to the outside of the temperature control ring 91 and are connected to the temperature control ring 91 through an electric shaft. The load-bearing ring 95 is connected, and the electric shaft is connected to the control center signal. When the temperature is too high or too low, the direction of the temperature-variable tube 10 can be adjusted according to the actual temperature. When the temperature is low, the cooling end of the temperature-variable tube 10 is controlled to face outward, and the heating end faces the oil cylinder, so that when it is working, the hydraulic oil in the oil cylinder can be heated, and the temperature of the hydraulic oil in the oil chamber will not be too low. When the temperature is high, the direction of the temperature-variable tube 10 can be changed to cool the hydraulic oil and prevent it from overheating. In conjunction with the existing device for regulating the temperature of the hydraulic oil in the hydraulic oil tank, the viscosity of the hydraulic oil can be regulated when it is overheated or overcooled, so that the hydraulic oil performance is stable when the oil cylinder is working, effectively protecting the oil cylinder itself from wear and tear, and effectively protecting the tunnel boring machine from drill jamming, effectively ensuring its stable construction.

[0042] In this embodiment, the heat conductive strip 93 is made of a heat conductive material and has a solid structure. It mainly transfers the heat or cold generated at the temperature variable tube 10 to the outer compensation ring 92, so as to facilitate the outer compensation ring 92 to control the temperature of the telescopic end of the cylinder. It is worth noting that the number of heat conductive strips 93 can be adjusted according to actual needs and can be three or more.

[0043] It is worth noting that when the temperature is not too high or too low, the semiconductor refrigeration sheet 102 is in a closed state, and the side surface is perpendicular to the oil cylinder. When temperature control is required, the temperature variable tube 10 rotates 180° each time, so that the end face of the semiconductor refrigeration sheet 102 can face the oil cylinder.

[0044] In summary, in conjunction with the temperature control method of the hydraulic oil tank in the prior art, the present solution also sets a directional compensation sleeve outside each oil cylinder. On the one hand, the direction of the temperature variable tube 10 can be controlled according to the actual environmental requirements, and then the temperature of the hydraulic oil in the oil cylinder can be controlled and compensated in a targeted manner to keep the hydraulic oil at a stable temperature. On the other hand, before the telescopic end of the oil cylinder enters the oil chamber of the oil cylinder, its surface can also be temperature compensated to further reduce the impact of the external environment on the hydraulic oil in the oil cylinder. Compared with the prior art of only performing temperature compensation on the hydraulic oil in the hydraulic oil tank, the accuracy of hydraulic oil temperature control is greatly improved, which is convenient for controlling the viscosity of the hydraulic oil so that it is not easy to be too high or too low, so that the hydraulic system is more accurate in controlling the operation of the rock drill component 801, and it is not easy to damage the drill bit due to changes in the viscosity of the hydraulic oil.

[0045] The second implementation method:

[0046] Based on the first embodiment, this embodiment further improves the structure of the inner movable sleeve, and the rest of the structure remains the same as the first embodiment.

[0047] Fig.11 As shown, the temperature control ring 91 includes an outer insulation layer 911 and a regulating ring 912 fixedly connected to the inner wall of the outer insulation layer 911. The outer insulation layer 911 is made of a material with poor thermal conductivity, so that the oil cylinder inside it is not easily affected by the external ambient temperature. A plurality of arc panels respectively matched with a plurality of temperature-changing tubes 10 are fixedly connected to the regulating ring 912, and the portion of the temperature-changing tube 10 located in the arc panel is not less than half of the volume of the temperature-changing tube 10. The regulating ring 912 and the outer compensation ring 92 are both hollow heat-conducting structures, and the two are connected by a heat-conducting strip 93. The inside of the two is saturated with temperature-adjusting water, preferably pure water with sodium chloride added. Sodium chloride can lower its freezing point, so that the temperature-adjusting water is not easy to solidify at 0°C at low temperature. A micro water pump is installed on one of the heat-conducting strips 93, and the micro water pump is connected to the control center signal, such as Fig.12 When overheated or overcooled, the temperature variable tube 10 rotates so that the heating or cooling end of the semiconductor refrigeration plate 102 is facing the fixed end of the cylinder. The heat or cold it generates will heat or cool the cooling water. At this time, the control center can control the micro water pump to control the temperature regulating water to circulate between the regulating ring 912 and the outer compensation ring 92, so that the temperature change at the outer compensation ring 92 does not only depend on the heat conduction of the heat conductive strip 93, but also makes the surface heat distribution more uniform and stable, and the compensation and regulation effect before the extended end of the cylinder enters the fixed end is better, so that the viscosity of the hydraulic oil is better controlled. In addition, the temperature regulating water that is always flowing makes the heat or cold distribution outside the fixed end of the cylinder more uniform, so that the temperature adjustment effect of the hydraulic oil is further improved, so that the construction of the rock drilling trolley is better, and the stable use of the rock drilling trolley is reduced by reducing the outside temperature.

[0048] like Fig.13 The two radial inner walls of the regulating ring 912 are fixedly connected with a plurality of guide strips 11, and the plurality of guide strips 11 on the two radial inner walls are cross-distributed, and the plurality of temperature variable tubes 10 and the plurality of guide strips 11 are spaced apart from each other. The guide strips 11 can guide the direction of the temperature regulating water in the regulating ring 912, so that the circulation process of the temperature regulating water is better, and it is not easy for part of the temperature regulating water to frequently exchange with the outer compensation ring 92, while the other part of the temperature regulating water is not exchanged with the outer compensation ring 92, so that the temperature distribution of the temperature control ring 91 and the outer compensation ring 92 tends to be stable, thereby ensuring the temperature regulation of the hydraulic oil.

[0049] In this embodiment, the heat conducting strip 93 is made of heat insulating material and has a hollow tube structure, so that when the temperature-adjusting water flows between the temperature control ring 91 and the outer compensation ring 92 through the heat conducting strip 93 , it is not easily affected by the external temperature.

[0050] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A single-arm hydraulic drilling rig, comprising a frame, a cab with an integrated control center, and an electric motor oil pump assembly, an air pump assembly, a water pump assembly and a cable drum assembly installed on the upper right end of the frame, characterized in that: An operating arm is installed at the front end of the frame, and a hydraulic system is also provided at the front end of the frame; the operating arm includes an arm frame seat fixedly connected to the frame, a telescopic arm rotatably connected to the arm frame seat through a universal joint, and a compensation cylinder located above the telescopic arm. A rotating cylinder, a swivel seat and a propulsion and pitching cylinder that are connected to each other are arranged in sequence between the front end of the telescopic arm and the lower end of the compensation cylinder. The propulsion and pitching cylinder is hinged to the lower end of the compensation cylinder, and the upper end of the swivel seat is hinged to the compensation cylinder. A pitching cylinder is installed between the arm frame seat and the lower end of the telescopic arm, and a translation cylinder is installed between the upper end of the telescopic arm and the swivel seat of the rotating cylinder. A propulsion beam assembly is slidably connected to the upper end of the fixed section of the compensation cylinder, and the extended end of the compensation cylinder is fixedly connected to the bottom of the propulsion beam assembly. A rock drill assembly driven by the propulsion cylinder is fixedly installed on the propulsion beam assembly near the upper end of the frame, and a middle fiber support assembly is slidably connected to the upper end of the propulsion beam assembly. A drum assembly is also arranged on the right side of the rock drill assembly, and a steel wire is connected between the drum assembly, the rock drill assembly and the middle fiber support assembly The rope is connected to the propulsion cylinder; the hydraulic system includes a pitch cylinder, a translation cylinder, a rotating cylinder and a compensation cylinder, a hydraulic oil tank located on the frame and an oil pipe connecting the hydraulic oil tank and the two liquid guide ports of each cylinder. The outer ends of the pitch cylinder, the translation cylinder, the rotating cylinder and the compensation cylinder are all sleeved with directional compensation sleeves, which include an inner movable sleeve and an outer compensation ring. Two heat-conducting strips and two support rods are fixedly connected between the inner movable sleeve and the outer compensation ring. The ends of the pitch cylinder, the translation cylinder, the rotating cylinder and the compensation cylinder are all installed with temperature sensors and are connected with the control center signal; the outer compensation ring is sleeved outside the extended end of the cylinder, and the inner movable sleeve is sleeved outside the fixed end of the cylinder, facing the two cavities in the fixed end and located between the two liquid guide ports; the inner movable sleeve includes a temperature control ring and a bearing ring fixedly connected to the end of the temperature control ring away from the outer compensation ring, and a plurality of temperature variable tubes are rotatably arranged inside the outer compensation ring, and the ends of the plurality of temperature variable tubes extend to the outside of the temperature control ring and are connected to the bearing ring through an electric shaft.

2. The single-arm hydraulic drilling rig according to claim 1, characterized in that: The up and down pitch angles of the telescopic arm are 60° and 30° respectively, and the left and right swing angles of the telescopic arm are ±35°.

3. The single-arm hydraulic drilling rig according to claim 2, characterized in that: The temperature control ring includes an outer insulation layer and a regulating ring fixedly connected to the inner wall of the outer insulation layer. The regulating ring and the outer compensation ring are both hollow heat-conducting structures, and the two are connected by a heat-conducting strip. The inside of both is saturated with temperature-regulating water. A micro water pump is installed on one of the heat-conducting strips, and the micro water pump is connected to the control center signal.

4. The single-arm hydraulic drilling rig according to claim 3, characterized in that: The two radial inner walls of the regulating ring are both fixedly connected with a plurality of guide strips, and the plurality of guide strips on the two radial inner walls are cross-distributed with each other, and the plurality of temperature variable tubes and the plurality of guide strips are spaced apart from each other.

5. The single-arm hydraulic drilling rig according to claim 4, characterized in that: The regulating ring is fixedly connected with a plurality of arc-surface panels respectively matching with a plurality of temperature-variable tubes, and the portion of the temperature-variable tube located in the arc-surface panels is not less than half of the volume of the temperature-variable tube.

6. The single-arm hydraulic drilling rig according to claim 5, characterized in that: The temperature-variable tube comprises two heat-conducting layers, a semiconductor refrigeration sheet located between the two heat-conducting layers, and two heat-insulating plates fixedly connected between the two heat-conducting layers. The semiconductor refrigeration sheet is located between the two heat-insulating plates, and the heat-conducting layers are made of high thermal conductivity materials.

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