Hydraulic rock drill impact cylinder body with lubricating, cooling and protecting functions

Abstract

The utility model relates to the field of hydraulic rock drills, in particular to a hydraulic rock drill impact cylinder with lubricating, cooling and protecting functions, which comprises a shell, an impact piston rod is arranged on the inner side of the shell, an oil inlet pipe is arranged at one end of the shell, an outer barrel is arranged on the outer side of the shell, and an inner barrel is arranged on the inner side of the outer barrel. By arranging the outer cylinder, the inner cylinder, the spiral partition plates, the liquid cooler, the liquid inlet pipe, the liquid outlet pipe and other components, the detachable flow guide groove is formed through mutual matching of the outer cylinder component, the inner cylinder component and the spiral partition plate component in the working process; the liquid cooler component, the liquid inlet pipe component and the liquid outlet pipe component are matched with one another, so that forced cooling is carried out on the shell, lubricating liquid between the shell and the impact piston rod is cooled, the lubricating liquid is prevented from being influenced by high temperature, normal operation of equipment is guaranteed, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic rock drills, in particular to an impact cylinder of a hydraulic rock drill with lubrication, cooling and protection functions. Background Art

[0002] The working principle of the hydraulic rock drill is to use high-pressure liquid to drive the chisel head to chisel, thereby crushing and separating the rock. It has the advantages of high chiseling frequency, high efficiency and low noise, and can adapt to a variety of rock hardness and different working environments.

[0003] After searching, the Chinese patent with publication number CN219774499U discloses a hydraulic rock drill impact cylinder with lubrication and cooling protection function. The hydraulic rock drill impact cylinder with lubrication and cooling protection function has the advantages of a piston copper guide sleeve for assisting the impact piston rod guidance and a piston buffer ring for auxiliary buffering inside the hydraulic cylinder, which reduces the damage to the inside of the hydraulic cylinder caused by the impact piston rod when it is working.

[0004] As the device works for an increasing amount of time, the temperature gradually increases. High temperature will cause the viscosity of the lubricating fluid to decrease, making the oil film thinner and the fluidity increased, which may lead to a weakening of the lubrication effect. The reduction in viscosity will affect the adhesion and load-bearing capacity of the lubricating fluid on the friction surface, thereby affecting its lubrication effect and affecting the normal operation and safety of the equipment. Therefore, a new solution is needed to solve this problem. Utility Model Content

[0005] In view of the above background technology, the prior art has the disadvantages that high temperature may cause the viscosity of the lubricating fluid to decrease, thereby affecting its lubrication effect and affecting the normal operation and safety of the equipment.

[0006] The utility model discloses a hydraulic rock drill impact cylinder with lubrication and cooling protection function, comprising an outer shell, an impact piston rod is provided on the inner side of the outer shell, an oil inlet pipe is provided at one end of the outer shell, an outer cylinder is provided on the outer side of the outer shell, an inner cylinder is provided on the inner side of the outer cylinder, spiral partitions are installed on both the outer cylinder and the inner cylinder, a fixing piece is provided between the outer cylinder and the inner cylinder, a liquid cooler is provided on the outer cylinder, and a liquid inlet pipe and a liquid outlet pipe are provided at both ends of the liquid cooler, and the liquid inlet pipe is connected with the liquid outlet pipe and the outer cylinder.

[0007] Furthermore, a sealing gasket is installed on the outer ring of the spiral partition, and the sealing gasket is in contact with the corresponding outer cylinder or inner cylinder.

[0008] Furthermore, the fixing member includes a positioning rod, one end of which passes through the outer cylinder and one end of the inner cylinder, and a fixing block is provided on the positioning rod, and the fixing block is threadedly connected to the positioning rod.

[0009] Furthermore, a convex ring 1 is installed at one end of the inner cylinder, and the convex ring 1 is plugged into the outer cylinder. A rubber pad is provided on the outer cylinder at a position corresponding to the convex ring 1.

[0010] Furthermore, a second convex ring is provided at one end of the outer tube away from the first convex ring, the second convex ring is plugged into the inner tube, and the rubber pad is provided on the inner tube at a position corresponding to the second convex ring.

[0011] Furthermore, a fixing bolt is installed on the outer shell, one end of the fixing bolt passes through the outer cylinder, and a fixing cap is provided on the fixing bolt, and the fixing cap is threadedly connected to the fixing bolt.

[0012] Furthermore, a fixing bracket is provided on the lower end surface of the liquid cooler. There are four fixing brackets, which are arranged at four corners of the liquid cooler. The fixing brackets are connected to the outer cylinder via fixing bolts.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The utility model is provided with an outer cylinder, an inner cylinder, a spiral partition, a liquid cooler, a liquid inlet pipe, a liquid outlet pipe and other components. During operation, the outer cylinder component, the inner cylinder component and the spiral partition component cooperate with each other to form a detachable guide groove, and the liquid cooler component, the liquid inlet pipe component and the liquid outlet pipe component cooperate with each other to force the temperature on the shell to be reduced, thereby reducing the temperature of the lubricating fluid between the shell and the impact piston rod, avoiding the lubricating fluid from being affected by high temperature, ensuring the normal operation of the equipment and improving safety.

[0015] 2. The utility model is provided with a positioning rod, a fixing bolt, a fixing cap, a convex ring 1, a convex ring 2, a rubber pad and other components. During operation, the convex ring 1 component, the convex ring 2 component and the rubber pad component cooperate with each other to seal the two ends of the outer tube and the inner tube, thereby preventing the coolant from leaking out. The outer tube and the inner tube are fixedly connected by the positioning rod component, and the outer tube is fixed to the shell by the fixing bolt component and the fixing cap component. By removing the fixing cap and the positioning rod, the components can be separated and removed, which is convenient for the staff to repair and replace the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the utility model;

[0019] Figure 3 For this utility model Figure 2 A in the middle is an enlarged schematic diagram;

[0020] Figure 4 This is a partial explosion diagram of the utility model.

[0021] In the figure: 1. Outer casing; 2. Impact piston rod; 3. Oil inlet pipe; 4. Outer cylinder; 5. Inner cylinder; 6. Liquid cooler; 7. Fixing bracket; 8. Liquid inlet pipe; 9. Liquid outlet pipe; 10. Spiral partition; 11. Raised ring 1; 12. Raised ring 2; 13. Rubber pad; 14. Fixing bolt; 15. Fixing cap; 16. Positioning rod. DETAILED DESCRIPTION

[0022] The following diagrams illustrate various embodiments of the present invention. For clarity, many physical details will be included in the following description. However, it should be understood that these physical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not essential. Furthermore, to simplify the illustrations, some commonly used structures and components are depicted in a simplified schematic manner.

[0023] See also Figure 1 、 Figure 2 、 Figure 4 The impact cylinder of the hydraulic rock drill with lubrication and cooling protection function of the present invention includes an outer shell 1, an impact piston rod 2 is arranged on the inner side of the outer shell 1, an oil inlet pipe 3 is arranged at one end of the outer shell 1, an outer cylinder 4 is arranged on the outside of the outer shell 1, an inner cylinder 5 is arranged on the inner side of the outer cylinder 4, spiral partitions 10 are installed on the outer cylinder 4 and the inner cylinder 5, a fixing part is arranged between the outer cylinder 4 and the inner cylinder 5, a liquid cooler 6 is arranged on the outer cylinder 4, a fixing bracket 7 is arranged on the lower end surface of the liquid cooler 6, four fixing brackets 7 are provided, and the four fixing brackets 7 are arranged at the four corners of the liquid cooler 6. The fixing bracket 7 is connected to the outer cylinder 4 by fixing bolts, and a liquid inlet pipe 8 and a liquid outlet pipe 9 are respectively provided at both ends of the liquid cooler 6. The liquid inlet pipe 8 is connected to the liquid outlet pipe 9 and the outer cylinder 4.

[0024] During operation, the lubricating liquid is sent into the impact piston rod 2 on the inner side of the shell 1 through the oil inlet pipe 3, and the cooling liquid is sent from the liquid outlet pipe 9 into between the outer cylinder 4 and the inner cylinder 5 through the liquid cooler 6, and flows along the depression between the spiral partitions 10, and then flows into the liquid cooler 6 again from the liquid inlet pipe 8, thereby achieving forced cooling of the shell 1 and indirectly cooling the lubricating liquid on the impact piston rod 2 on the inner side of the shell 1, preventing the lubricating liquid from being affected by high temperature, ensuring the normal operation of the equipment and improving safety.

[0025] like Figure 2 、 Figure 3 、 Figure 4 As shown, a sealing gasket is installed on the outer ring of the spiral partition 10, and the sealing gasket contacts the outer cylinder 4 or the inner cylinder 5 corresponding to the spiral partition 10 to prevent the coolant from flowing through the gap between the spiral partition 10 and the outer cylinder 4 and the inner cylinder 5, thereby improving the sealing effect. The fixing part includes a positioning rod 16, one end of the positioning rod 16 passes through one end of the outer cylinder 4 and the inner cylinder 5, and a fixing block is provided on the positioning rod 16, which is threadedly connected to the positioning rod 16. During operation, the fixing block is removed from the positioning rod 16, and then the positioning rod 16 is removed from the outer cylinder 4 and the inner cylinder 5, thereby releasing the fixation between the outer cylinder 4 and the inner cylinder 5, and then driving the outer cylinder 4 and the inner cylinder 5 to rotate relative to each other, so that the outer cylinder 4 and the inner cylinder 5 can be separated, and the outer cylinder 4 and the inner cylinder 5 can be installed by driving them in reverse.

[0026] like Figure 2 、 Figure 3 As shown, a convex ring 11 is installed at one end of the inner cylinder 5, and the convex ring 11 is plugged into the outer cylinder 4. A rubber pad 13 is provided on the outer cylinder 4 at a position corresponding to the convex ring 11. A convex ring 2 is provided at the end of the outer cylinder 4 away from the convex ring 11, and the convex ring 2 12 is plugged into the inner cylinder 5. A rubber pad 13 is provided on the inner cylinder 5 at a position corresponding to the convex ring 2 12. During installation, the convex ring 11 is inserted into the outer cylinder 4, and the convex ring 2 12 is inserted into the inner cylinder 5, and the outer cylinder 4 and the inner cylinder 5 are sealed at both ends by cooperating with the rubber pad 13.

[0027] like Figure 2 、 Figure 4 As shown, a fixing bolt 14 is installed on the outer shell 1, one end of the fixing bolt 14 passes through the outer tube 4, and a fixing cap 15 is provided on the fixing bolt 14. The fixing cap 15 is threadedly connected to the fixing bolt 14. By removing the fixing cap 15 from the fixing bolt 14, the fixation between the outer shell 1 and the outer tube 4 is released, and the outer tube 4 can be removed.

[0028] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A hydraulic rock drill impact cylinder with lubrication and cooling protection functions, comprising a housing (1), characterized in that: An impact piston rod (2) is provided on the inner side of the outer shell (1), an oil inlet pipe (3) is provided at one end of the outer shell (1), an outer cylinder (4) is provided on the outer side of the outer shell (1), an inner cylinder (5) is provided on the inner side of the outer cylinder (4), spiral partitions (10) are installed on both the outer cylinder (4) and the inner cylinder (5), a fixing member is provided between the outer cylinder (4) and the inner cylinder (5), a liquid cooler (6) is provided on the outer cylinder (4), and a liquid inlet pipe (8) and a liquid outlet pipe (9) are provided at both ends of the liquid cooler (6), and the liquid inlet pipe (8) is connected to the liquid outlet pipe (9) and the outer cylinder (4).

2. The hydraulic rock drill impact cylinder with lubrication and temperature protection function according to claim 1, characterized in that: A sealing gasket is installed on the outer ring of the spiral partition (10), and the sealing gasket contacts the corresponding outer cylinder (4) or inner cylinder (5).

3. The hydraulic rock drill impact cylinder with lubrication and temperature protection function according to claim 1, characterized in that: The fixing member comprises a positioning rod (16), one end of which passes through the outer cylinder (4) and one end of the inner cylinder (5); a fixing block is provided on the positioning rod (16), and the fixing block is threadedly connected to the positioning rod (16).

4. The hydraulic rock drill impact cylinder with lubrication and temperature protection function according to claim 1, characterized in that: A convex ring (11) is installed at one end of the inner cylinder (5), and the convex ring (11) is plugged into the outer cylinder (4). A rubber pad (13) is provided on the outer cylinder (4) at a position corresponding to the convex ring (11).

5. The hydraulic rock drill impact cylinder with lubrication and temperature protection function according to claim 4, characterized in that: A second convex ring (12) is provided at one end of the outer tube (4) away from the first convex ring (11), the second convex ring (12) is plugged into the inner tube (5), and the rubber pad (13) is provided on the inner tube (5) at a position corresponding to the second convex ring (12).

6. The hydraulic rock drill impact cylinder with lubrication and temperature protection function according to claim 1, characterized in that: A fixing bolt (14) is installed on the outer shell (1), one end of the fixing bolt (14) passes through the outer cylinder (4), and a fixing cap (15) is provided on the fixing bolt (14), and the fixing cap (15) is threadedly connected to the fixing bolt (14).

7. The hydraulic rock drill impact cylinder with lubrication and temperature protection function according to claim 1, characterized in that: A fixing frame (7) is provided on the lower end surface of the liquid cooler (6), and four fixing frames (7) are provided. The four fixing frames (7) are arranged at the four corners of the liquid cooler (6), and the fixing frames (7) are connected to the outer cylinder (4) by fixing bolts.

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