Hydraulic oil cylinder casting and cylinder bottom structure thereof

Abstract

The utility model provides a hydraulic oil cylinder casting and a cylinder bottom structure thereof. The hydraulic oil cylinder casting comprises a hydraulic oil cylinder base, an oil hole is formed in the surface of the hydraulic oil cylinder base, an inserting groove is formed in the left end of the hydraulic oil cylinder base, screw holes are formed in the four corners of the bottom of the inserting groove, a pipe groove is formed in the middle of the bottom of the inserting groove, and a communicating hole penetrating through the cylinder bottom of the hydraulic oil cylinder base is formed in the bottom of the pipe groove. The pair of lug rings is fixed to the front side and the rear side of the left end of the hydraulic oil cylinder base correspondingly. The fixing base is inserted into the inserting groove, the T-shaped piston pipe is inserted into the pipe groove, meanwhile, the rubber pad and the spring are located at the cylinder bottom of the hydraulic oil cylinder base, and after the fixing base is fixed through screws, it can be guaranteed that hydraulic oil in the hydraulic oil cylinder cannot flow to the outside from the communicating hole; and when the end part of the piston rod of the hydraulic oil cylinder moves to be in contact with the cylinder bottom of the hydraulic oil cylinder base, the rubber pad and the spring can be extruded, so that a buffering effect of the piston rod is achieved, the piston rod of the hydraulic oil cylinder is prevented from being in hard contact with the cylinder bottom of the hydraulic oil cylinder base, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder casting technology, and in particular to hydraulic cylinder castings and their cylinder bottom structure. Background Technology

[0002] Hydraulic cylinder castings refer to the metal parts or blanks of hydraulic cylinders produced through casting processes. Hydraulic cylinder castings include cylinder barrels, end caps, pistons, piston rods, bases, and cylinder bottoms, among which the base and cylinder bottom are integrated together.

[0003] Nowadays, the base of a hydraulic cylinder is mainly subjected to external mechanical loads, and the end of the piston rod will contact the bottom of the cylinder. This collision between the cylinder bottom and the piston rod can easily affect the service life of the hydraulic cylinder base, thereby reducing the service life of the hydraulic cylinder. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology, and to propose a hydraulic cylinder casting and its cylinder bottom structure.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] Hydraulic cylinder castings, including:

[0007] A hydraulic cylinder base, wherein an oil hole is opened on the surface of the hydraulic cylinder base, a slot is opened at the left end of the hydraulic cylinder base, screw holes are opened at the four corners of the slot bottom, a pipe groove is opened in the middle of the slot bottom, and a connecting hole through the bottom of the pipe groove is opened at the bottom of the pipe groove.

[0008] Earrings, the earrings being a pair and respectively fixed to the front and rear sides of the left end of the hydraulic cylinder base.

[0009] The hydraulic cylinder casting bottom structure, including the hydraulic cylinder casting as described above, also includes:

[0010] A buffer assembly, which passes sequentially through a slot, a tube groove and a connecting hole and is fixed to a hydraulic cylinder casting.

[0011] Preferably, the buffer component includes:

[0012] A fixing base is inserted into a slot. The protruding structure of the fixing base matches the recessed structure of the slot. Screws are provided through the four corners of the fixing base, and the screws are threadedly connected to the screw holes one by one.

[0013] The T-shaped piston tube is fixed as a whole in the center of the fixed seat and is inserted into the tube groove;

[0014] A vertical piston assembly, comprising two sets of vertical piston assemblies, which are symmetrically and slidably connected to the upper and lower sides inside the vertical end of the T-shaped piston tube.

[0015] A horizontal piston assembly is slidably connected inside the horizontal end of a T-shaped piston tube, and the horizontal piston assembly is interposed with a connecting hole.

[0016] Preferably, the outer diameter of the horizontal end of the T-shaped piston tube is equal to the diameter of the groove, the protruding structure of the horizontal end of the T-shaped piston tube matches the recessed structure of the groove, and the outer diameter of the horizontal end of the T-shaped piston tube is larger than the diameter of the connecting hole.

[0017] Preferably, the vertical piston assembly includes a T-shaped vertical piston rod and a vertical piston, the vertical piston being slidably connected inside the vertical end of the T-shaped piston tube, the T-shaped vertical piston rod being fixed to the outer end of the vertical piston, and the end of the T-shaped vertical piston rod extending out of the T-shaped piston tube.

[0018] Preferably, the horizontal piston assembly includes a horizontal piston, a T-shaped horizontal piston rod, and a rubber pad. The horizontal piston is slidably connected inside the horizontal end of the T-shaped piston tube. The T-shaped horizontal piston rod is fixed to the outer end of the horizontal piston. The end of the T-shaped horizontal piston rod extends out of the T-shaped piston tube. The end of the T-shaped horizontal piston rod passes through a connecting hole and is located inside the bottom of the hydraulic cylinder base. The rubber pad is fixed to the end of the T-shaped horizontal piston rod.

[0019] Preferably, the outer diameter of the end of the T-shaped horizontal piston rod is larger than the outer diameter of the beginning of the T-shaped horizontal piston rod, a spring is connected between the end of the T-shaped horizontal piston rod and the horizontal end of the T-shaped piston tube, the outer diameter of the end of the T-shaped horizontal piston rod is equal to the outer diameter of the rubber pad, and the outer diameter of the end of the T-shaped horizontal piston rod is equal to the diameter of the connecting hole.

[0020] Compared with the prior art, this utility model has at least the following beneficial effects:

[0021] In the above solution, by inserting the fixing seat into the slot, the T-shaped piston tube is inserted into the slot. At the same time, the rubber pad and spring are located at the bottom of the hydraulic cylinder base. After fixing the fixing seat with screws, it can not only ensure that the hydraulic oil in the hydraulic cylinder does not flow to the outside through the connecting hole, but also, when the end of the hydraulic cylinder piston rod moves to contact the bottom of the hydraulic cylinder base, it can squeeze the rubber pad and the spring, thereby playing a buffering role for the piston rod. This prevents the hydraulic cylinder piston rod from making hard contact with the bottom of the hydraulic cylinder base, thus improving the service life. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0023] Figure 2This is a schematic cross-sectional view of the present invention;

[0024] Figure 3 This is a cross-sectional schematic diagram of the hydraulic cylinder base of this utility model.

[0025] [Figure Labels]

[0026] 1-Hydraulic cylinder base, 2-Oil hole, 3-Earring, 4-Fixed seat, 5-Screw, 6-T-type piston tube, 7-T-type vertical piston rod, 8-Vertical piston, 9-Horizontal piston, 10-T-type horizontal piston rod, 11-Rubber pad, 12-Spring, 13-Slot, 14-Screw hole, 15-Pipe groove, 16-Connecting hole. Detailed Implementation

[0027] like Figure 1 , Figure 3 The hydraulic cylinder casting shown includes:

[0028] A hydraulic cylinder base 1 has an oil hole 2 on its surface, a slot 13 on its left end, screw holes 14 at the four corners of the bottom of the slot 13, a pipe groove 15 in the middle of the bottom of the slot 13, and a connecting hole 16 through the bottom of the pipe groove 15.

[0029] Earring 3, there is a pair of earrings 3 and they are respectively fixed on the front and rear sides of the left end of the hydraulic cylinder base 1. The earrings 3 are arranged in front and back, which is equivalent to being set in the middle, so that space can be reserved for the slot 13.

[0030] like Figures 1-3 The hydraulic cylinder casting bottom structure shown includes the hydraulic cylinder casting as described above, and further includes:

[0031] The buffer assembly passes sequentially through the slot 13, the tube groove 15 and the connecting hole 16 and is fixed to the hydraulic cylinder casting. The buffer assembly can buffer the hydraulic cylinder piston rod when the end of the hydraulic cylinder piston rod moves to contact the bottom of the hydraulic cylinder base 1, thereby preventing the hydraulic cylinder piston rod from making hard contact with the bottom of the hydraulic cylinder base 1 and improving its service life.

[0032] The buffer component includes:

[0033] The fixing seat 4 is inserted into the slot 13. The protruding structure of the fixing seat 4 matches the recessed structure of the slot 13. Screws 5 are provided through the four corners of the fixing seat 4. The screws 5 are threadedly connected to the screw holes 14 one by one. The fixing seat 4 is inserted into the slot 13 and then four screws 5 are screwed into the screw holes 14 one by one to fix the fixing seat 4.

[0034] The T-shaped piston tube 6 is fixed as a whole in the center of the fixing seat 4. The T-shaped piston tube 6 is inserted into the tube groove 15. The outer diameter of the horizontal end of the T-shaped piston tube 6 is equal to the diameter of the tube groove 15. The protruding structure of the horizontal end of the T-shaped piston tube 6 matches the concave structure of the tube groove 15. The outer diameter of the horizontal end of the T-shaped piston tube 6 is larger than the diameter of the connecting hole 16. During the process of inserting the fixing seat 4 into the slot 13, the horizontal end of the T-shaped piston tube 6 will insert into the tube groove 15 and abut against the bottom of the tube groove 15.

[0035] The vertical piston assembly has two sets and is symmetrically slidably connected to the upper and lower sides inside the vertical end of the T-shaped piston tube 6. The vertical piston assembly includes a T-shaped vertical piston rod 7 and a vertical piston 8. The vertical piston 8 is slidably connected to the inside of the vertical end of the T-shaped piston tube 6. The T-shaped vertical piston rod 7 is fixed to the outer end of the vertical piston 8, and the end of the T-shaped vertical piston rod 7 extends out of the T-shaped piston tube 6.

[0036] A horizontal piston assembly is slidably connected inside the horizontal end of the T-shaped piston tube 6. The horizontal piston assembly is inserted into the connecting hole 16. The horizontal piston assembly includes a horizontal piston 9, a T-shaped horizontal piston rod 10, and a rubber pad 11. The horizontal piston 9 is slidably connected inside the horizontal end of the T-shaped piston tube 6. The T-shaped horizontal piston rod 10 is fixed to the outer end of the horizontal piston 9, with its end extending out of the T-shaped piston tube 6. The end of the T-shaped horizontal piston rod 10 passes through the connecting hole 16 and is located in the hydraulic oil... Inside the cylinder base 1, the rubber pad 11 is fixed to the end of the T-shaped horizontal piston rod 10. The outer diameter of the end of the T-shaped horizontal piston rod 10 is larger than the outer diameter of the head end of the T-shaped horizontal piston rod 10. A spring 12 connects the end of the T-shaped horizontal piston rod 10 and the horizontal end of the T-shaped piston tube 6. The outer diameter of the end of the T-shaped horizontal piston rod 10 is equal to the outer diameter of the rubber pad 11, and the outer diameter of the end of the T-shaped horizontal piston rod 10 is equal to the diameter of the connecting hole 16. After the horizontal end of the T-shaped piston tube 6 is inserted into the tube groove 15, the T-shaped horizontal piston rod... The end of the piston rod 10 enters the bottom of the hydraulic cylinder base 1. Simultaneously, the rubber pad 11 and spring 12 are located at the bottom of the hydraulic cylinder base 1. After fixing the mounting base 4 with screw 5, because the mounting base 4 is tightly attached to the bottom of the slot 13, and the horizontal end of the T-shaped piston tube 6 abuts against the bottom of the slot 15, both the horizontal end of the T-shaped piston tube 6 and the mounting base 4 can be fitted with sealing rings. This double sealing not only ensures that the hydraulic oil inside the hydraulic cylinder does not flow to the outside through the connecting hole 16, but also prevents the piston rod end from moving to contact the bottom of the hydraulic cylinder base. When contacted, the rubber pad 11 can be squeezed, and at the same time, the T-shaped horizontal piston rod 10 squeezes the spring 12. The T-shaped horizontal piston rod 10 slides into the T-shaped piston tube 6, causing the horizontal piston 9 to slide. The horizontal piston 9 pushes the fluid in the T-shaped piston tube 6. The fluid enters the vertical end from the horizontal end of the T-shaped piston tube 6. At this time, the fluid pushes the vertical piston 8. The vertical piston 8 drives the T-shaped vertical piston rod 7 to slide outward, thereby playing a buffering role for the hydraulic cylinder piston rod, thus preventing the hydraulic cylinder piston rod from making hard contact with the bottom of the hydraulic cylinder base 1 and improving its service life.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. Hydraulic cylinder casting, characterized in that It includes: Hydraulic cylinder base (1), the hydraulic cylinder base (1) surface is provided with oil hole (2), the left end of the hydraulic cylinder base (1) is provided with slot (13), the slot (13) bottom four corners are provided with screw hole (14), the slot (13) bottom is provided with pipe groove (15), the pipe groove (15) bottom is provided with through hole (16) through the cylinder bottom of the hydraulic cylinder base (1); Earrings (3), the earrings (3) have a pair and are respectively fixed on the left end of the hydraulic cylinder base (1) front and back.

2. Hydraulic cylinder casting bottom structure comprising a hydraulic cylinder casting according to claim 1, characterized in that It also includes: Buffer assembly, the buffer assembly is sequentially through the slot (13), the pipe groove (15) and the through hole (16) and is fixed with the hydraulic cylinder casting.

3. The hydraulic cylinder casting bottom structure of claim 2, wherein The buffer assembly includes: Fixed seat (4), the fixed seat (4) is inserted with the slot (13), the convex structure of the fixed seat (4) matches the concave structure of the slot (13), the fixed seat (4) four corners are provided with screw (5), the screw (5) is threadedly connected with the screw hole (14) one by one; T type piston pipe (6), the T type piston pipe (6) is integrally fixed in the center of the fixed seat (4), the T type piston pipe (6) is inserted with the pipe groove (15); Vertical piston assembly, the vertical piston assembly has two groups, and is symmetrically connected on the inside of the upper and lower sides of the vertical end of the T type piston pipe (6); Horizontal piston assembly, the horizontal piston assembly is connected in the inside of the horizontal end of the T type piston pipe (6), and the horizontal piston assembly is provided with the through hole (16).

4. The hydraulic cylinder casting bottom structure of claim 3, wherein: The horizontal end outer diameter of the T type piston pipe (6) is equal to the hole diameter of the pipe groove (15), the horizontal end convex structure of the T type piston pipe (6) matches the concave structure of the pipe groove (15), and the horizontal end outer diameter of the T type piston pipe (6) is greater than the hole diameter of the through hole (16).

5. The hydraulic cylinder casting base structure of claim 4, wherein: The vertical piston assembly includes T type vertical piston rod (7) and vertical piston (8), the vertical piston (8) is connected in the inside of the vertical end of the T type piston pipe (6), the T type vertical piston rod (7) is fixed at the outer end of the vertical piston (8), and the T type vertical piston rod (7) extends out of the T type piston pipe (6).

6. The hydraulic cylinder casting bottom structure of claim 5, wherein: The horizontal piston assembly includes horizontal piston (9), T type horizontal piston rod (10) and rubber pad (11), the horizontal piston (9) is connected in the inside of the horizontal end of the T type piston pipe (6), the T type horizontal piston rod (10) is fixed at the outer end of the horizontal piston (9), the T type horizontal piston rod (10) extends out of the T type piston pipe (6), the T type horizontal piston rod (10) extends through the through hole (16) and is located in the inside of the cylinder bottom of the hydraulic cylinder base (1), and the rubber pad (11) is fixed at the end of the T type horizontal piston rod (10).

7. The hydraulic cylinder casting base structure of claim 6, wherein: The outer diameter of the end of the T-shaped horizontal piston rod (10) is larger than the outer diameter of the head of the T-shaped horizontal piston rod (10), a spring (12) is connected between the end of the T-shaped horizontal piston rod (10) and the horizontal end of the T-shaped piston tube (6), the outer diameter of the end of the T-shaped horizontal piston rod (10) is equal to the outer diameter of the rubber pad (11), and the outer diameter of the end of the T-shaped horizontal piston rod (10) is equal to the hole diameter of the communication hole (16).

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