A two-end clamping cylinder
By designing electromagnets and extrusion sealing components in the oil cylinder, increasing the extrusion pressure between the piston rod and the cylinder liner, the problems of piston rod shaking and poor sealing performance are solved, the mechanical accuracy and sealing performance are improved, and the equipment is ensured. stability and safety.
Patent Information
- Application Number
- CN202411329202.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2044-09-24
AI Technical Summary
After the position of the piston rod in the existing oil cylinder needs to be adjusted without pole, it is difficult to increase the squeeze pressure between the piston rod and the cylinder liner such as the sealing ring and the check ring, causing the piston rod to shake, affecting the mechanical accuracy and sealing performance.
Designed a sealing cylinder including a sealing head, cylinder liner, piston rod, guide rod, electromagnet, and extrusion seal assembly, and drive the L-shaped extrusion rod through an electromagnet, return spring and airbag to add a sealing seat and The squeeze pressure between the cylinder liners ensures the stability and sealing of the piston rod.
It improves the stability and sealing between the sealing seat and the cylinder liner, avoids performance degradation and premature wear caused by uneven stress, enhances mechanical accuracy and sealing performance, and ensures the stability and safety of the equipment.
Smart Images
Figure CN118855795B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of oil cylinders, and in particular relates to a two-end clamping oil cylinder. Background Art
[0002] The two-end mangling machine is a multi-purpose, high-efficiency small-sized construction machine, which consists of a "tractor" + an excavator + a loader. It can complete operations such as excavation and loading, and can achieve multiple functions such as crushing, drilling, snow removal, cleaning, etc. by replacing different attachments;
[0003] The two ends of the machine need to use the oil cylinder to drive the robot arm. The oil cylinder is also called the hydraulic cylinder. The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion);
[0004] Since the position of the piston rod inside the oil cylinder needs to be infinitely adjusted, the piston rod needs to be fixed after the infinite adjustment. The existing methods of preventing the piston rod from moving, such as sealing rings and check rings, are not convenient for increasing the squeezing force between the piston rod and the cylinder sleeve, which may lead to the problem of the piston rod shaking after long-term use. Summary of the invention
[0005] The present invention aims at the problem that the position of the piston rod inside the oil cylinder in the prior art needs to be infinitely adjusted, and the piston rod after infinitely adjusted needs to be fixed. In the prior art, sealing rings and check rings are used to prevent the piston rod from moving, which is not convenient for increasing the squeezing force between the piston rod and the cylinder sleeve, thus causing the piston rod to shake easily after long-term use. The present invention proposes the following technical solution:
[0006] A two-end busy clamping oil cylinder, comprising: a sealing head, the number of the sealing heads is set to two, a cylinder sleeve is sleeved between the two sealing heads, a piston rod is movably connected inside the cylinder sleeve and the piston rod passes through one of the sealing heads, a fixing seat is fixedly installed inside the cylinder sleeve at one end of the piston rod, a guide rod is fixedly installed on one end surface of the fixing seat, an electromagnet is fixedly installed inside the guide rod, the piston rod is slidably connected to the outside of the guide rod, and a sealing seat is fixedly installed on the outside of one end of the piston rod close to the fixing seat;
[0007] An extrusion sealing assembly is fixedly installed inside the sealing seat, and the extrusion sealing assembly includes a magnet block movably connected to the inside of the sealing seat, one end of the magnet block is movably connected to a rotating pair, one end of the rotating pair is movably connected to an L-shaped extrusion rod, one end of the L-shaped extrusion rod is fixedly installed with a piston plate, a return spring is fixedly installed on the top of the piston plate, and an air bag is fixedly installed on the outside of the sealing seat.
[0008] Preferably, spring rods are equidistantly embedded and installed inside the sealing seat, a moving ring is fixedly installed between one ends of a plurality of the spring rods, and a check strip is equidistantly welded to one end of the moving ring.
[0009] Preferably, the number of the magnet blocks and the non-return strips corresponds one to one, and a triangular groove is provided on the outer side of the magnet block at a position corresponding to one end of the non-return strip.
[0010] Preferably, a cylinder is rotatably connected to the middle of the rotating pair and the cylinder is clamped and installed inside the sealing seat, guide grooves are symmetrically provided at both ends of the rotating pair, and a round rod is welded to the middle of the L-shaped extrusion rod and the magnet block at a position inside the guide groove.
[0011] Preferably, an oil inlet and outlet hole is provided at the top of the sealing head, and a detection head is installed at the top of one of the sealing heads.
[0012] Preferably, a placement groove is provided inside the sealing seat at a position corresponding to the outer side of the magnet block, the rotating pair and the L-shaped extrusion rod.
[0013] Preferably, a placement cavity is opened inside the sealing seat at a position corresponding to the outer side of the piston plate, and the air inlet head of the airbag is connected to the inside of the placement cavity through.
[0014] Preferably, a circular groove is provided inside the sealing seat at a position corresponding to the outer side of the moving ring, and the inner diameter and outer diameter of the circular groove are equal to the inner diameter and outer diameter of the moving ring.
[0015] Preferably, an L-shaped column is symmetrically welded to one end of the L-shaped extrusion rod, and one end of the L-shaped column is fixedly connected to the bottom end of the piston plate.
[0016] The beneficial effects of the present invention are:
[0017] (1) The extrusion pressure between the sealing seat and the cylinder liner is increased, so that the installation between the sealing seat and the cylinder liner is more stable, and the sealing seat is prevented from being displaced along the inside of the cylinder liner due to the force on the piston rod after the sealing seat drives the piston rod to move;
[0018] (2) The forces at different positions inside the cylinder liner are equal, which can effectively avoid performance degradation or premature wear caused by uneven forces. At the same time, the center line of the seal seat and the center line of the cylinder liner can be on the same horizontal line, which helps to improve the overall mechanical accuracy and sealing performance;
[0019] (3) The sealing between the sealing seat and the cylinder liner is improved, which helps to maintain the stability of the internal pressure and reduce the pressure fluctuations caused by wear and leakage, thereby ensuring the stability and safety of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1The structure diagram of a two-end clamping oil cylinder in Example 1 is shown;
[0021] Figure 2 Shown is a cross-sectional view of the cylinder liner in Example 1;
[0022] Figure 3 The example 1 is shown Figure 2 Schematic diagram of the structure of the middle A area;
[0023] Figure 4 Shown is a schematic structural diagram of the extrusion seal assembly in Example 1.
[0024] In the figure: 1. sealing head; 2. cylinder sleeve; 3. piston rod; 5. fixed seat; 6. guide rod; 7. electromagnet; 8. sealing seat; 9. placement groove; 10. placement cavity; 11. air bag; 12. circular groove; 13. extrusion sealing assembly; 1301. spring rod; 1302. moving ring; 1303. check strip; 1304. magnet block; 1305. rotating pair; 1306. L-shaped extrusion rod; 1307. piston plate; 1308. reset spring. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.
[0026] Embodiment 1:
[0027] The present invention provides a two-end busy clamping oil cylinder, such as Figures 1 to 4 As shown, a two-end busy clamping oil cylinder comprises: a sealing head 1, the number of the sealing heads 1 is set to two, a cylinder sleeve 2 is sleeved between the two sealing heads 1, an oil inlet and outlet hole is opened at the top of the sealing head 1, a detection head is installed at the top of one of the sealing heads 1, which is used to flow the oil on both sides of the inner wall of the cylinder sleeve 2, a piston rod 3 is movably connected inside the cylinder sleeve 2 and the piston rod 3 passes through one of the sealing heads 1, a fixing seat 5 is fixedly installed at one end of the piston rod 3 inside the cylinder sleeve 2, a guide rod 6 is fixedly installed on one end surface of the fixing seat 5, an electromagnet 7 is fixedly installed inside the guide rod 6, the piston rod 3 is slidably connected to the outside of the guide rod 6, and a sealing seat 8 is fixedly installed on the outside of one end of the piston rod 3 close to the fixing seat 5;
[0028] An extrusion sealing assembly 13 is fixedly installed inside the sealing seat 8, and the extrusion sealing assembly 13 includes a magnet block 1304 movably connected to the inside of the sealing seat 8, one end of the magnet block 1304 is movably connected to a rotating pair 1305, one end of the rotating pair 1305 is movably connected to an L-shaped extrusion rod 1306, one end of the L-shaped extrusion rod 1306 is fixedly installed with a piston plate 1307, the top of the piston plate 1307 is fixedly installed with a return spring 1308, and an airbag 11 is fixedly installed on the outside of the sealing seat 8.
[0029] like Figure 2 , Figure 3 and Figure 4 As shown, spring rods 1301 are embedded and installed equidistantly inside the sealing seat 8, a moving ring 1302 is fixedly installed between one ends of a plurality of spring rods 1301, a check strip 1303 is welded equidistantly at one end of the moving ring 1302, the number of magnet blocks 1304 and the check strip 1303 corresponds one to one, and a triangular groove is provided on the outer side of the magnet block 1304 at a position corresponding to one end of the check strip 1303;
[0030] The tension of the spring rod 1301 drives the moving ring 1302 to move. When the moving ring 1302 moves, it drives the check strip 1303 to enter the magnet block 1304 along the triangular groove, so that the positions of the multiple magnet blocks 1304 remain moving, thereby preventing the multiple magnet blocks 1304 from having different moving spacings, which results in different squeezing forces of the multiple L-shaped squeezing rods 1306 on different positions inside the cylinder sleeve 2, thereby affecting the stability of the sealing seat 8;
[0031] like Figure 2 , Figure 3 and Figure 4 As shown, a cylinder is rotatably connected in the middle of the rotating pair 1305 and the cylinder is clamped and installed inside the sealing seat 8. Guide grooves are symmetrically opened at both ends of the rotating pair 1305. A round rod is welded at the middle of the L-shaped extrusion rod 1306 and the magnet block 1304 at the position inside the guide groove;
[0032] When the magnet block 1304 moves, it drives the rotating pair 1305 to deflect. When the rotating pair 1305 deflects, it drives the L-shaped extrusion rod 1306 to rise. At this time, through the action of the guide groove and the round rod, the L-shaped extrusion rod 1306 can be caused to rise during the descending process of the magnet block 1304 to prevent the three from getting stuck during operation. The cylinder is used to limit the rotating pair 1305 to prevent the rotating pair 1305 from being offset.
[0033] like Figure 2 and Figure 3As shown, a placement groove 9 is provided inside the sealing seat 8 at a position corresponding to the outer side of the magnet block 1304, the rotating pair 1305 and the L-shaped extrusion rod 1306, which is used to place the magnet block 1304, the rotating pair 1305 and the L-shaped extrusion rod 1306. A placement cavity 10 is provided inside the sealing seat 8 at a position corresponding to the outer side of the piston plate 1307. The air inlet head of the airbag 11 is connected to the inside of the placement cavity 10, which is used to place the piston plate 1307 and can limit the piston plate 1307. The movable ring inside the sealing seat 8 A circular groove 12 is provided at the outer side of 1302, and the inner diameter and outer diameter of the circular groove 12 are equal to the inner diameter and outer diameter of the movable ring 1302, and is used to place the movable ring 1302, and achieves the purpose of limiting the movable ring 1302. An L-shaped column is symmetrically welded at one end of the L-shaped extrusion rod 1306, and one end of the L-shaped column is fixedly connected to the bottom end of the piston plate 1307, and is used for the connection between the piston plate 1307 and the L-shaped extrusion rod 1306, thereby changing the difficulty of connecting the piston plate 1307 and the L-shaped extrusion rod 1306.
[0034] Working principle: During the actual use of the device, oil is pumped out from one of the sealing heads 1 while oil is introduced into the other sealing head 1, and at this time, the electromagnet 7 is powered off. After the electromagnet 7 is powered off, the tension of the return spring 1308 and the pressure inside the airbag 11 drive the piston plate 1307 to move. When the piston plate 1307 moves, it drives the L-shaped extrusion rod 1306 to move. When the L-shaped extrusion rod 1306 moves, it separates from the cylinder sleeve 2. At this time, the L-shaped extrusion rod 1306 drives the magnet block 1304 to rise through the rotating pair 1305. Since the oil at one end of the cylinder sleeve 2 increases and the oil at the other end decreases, the seal is driven by oil pressure at this time. The sealing seat 8 moves, and the piston rod 3 is driven to move along the outer side of the guide rod 6 when the sealing seat 8 moves. When the piston rod 3 moves to a predetermined position, the electromagnet 7 is powered at this time, and the electromagnet 7 is powered to adsorb the magnet block 1304. When the magnet block 1304 moves, the L-shaped extrusion rod 1306 is driven to squeeze the inner wall of the cylinder sleeve 2 through the rotating pair 1305, thereby increasing the extrusion force between the sealing seat 8 and the cylinder sleeve 2, so that the installation between the sealing seat 8 and the cylinder sleeve 2 is more stable, and the sealing seat 8 is prevented from being displaced along the inside of the cylinder sleeve 2 due to the force on the piston rod 3 after the sealing seat 8 drives the piston rod 3 to move;
[0035] The tension of the spring rod 1301 drives the moving ring 1302 to move, and when the moving ring 1302 moves, it drives the check strip 1303 to be inserted into the magnet block 1304, so that the moving intervals of the multiple magnet blocks 1304 are the same, and then the forces at different positions inside the cylinder sleeve 2 are the same, which can further effectively avoid the performance degradation or premature wear caused by uneven force, and at the same time, the center line of the sealing seat 8 and the center line of the cylinder sleeve 2 can be on the same horizontal line, which helps to improve the overall mechanical accuracy and sealing performance;
[0036] When the L-shaped extrusion rod 1306 moves, it drives the piston plate 1307 to move. When the piston plate 1307 moves, it squeezes the gas inside the placement chamber 10, allowing the gas to enter the airbag 11 and cause the airbag 11 to expand. The expanded airbag 11 increases the sealing between the sealing seat 8 and the cylinder sleeve 2, helps to maintain the stability of the internal pressure, and reduces pressure fluctuations caused by wear and leakage, thereby ensuring the stability and safety of the equipment operation.
[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.
Claims
1. A two-end clamping cylinder, It is characterized in that include: A sealing head (1), wherein the number of the sealing heads (1) is set to be two in total, a cylinder sleeve (2) is sleeved between the two sealing heads (1), a piston rod (3) is movably connected inside the cylinder sleeve (2), and the piston rod (3) passes through one of the sealing heads (1), a fixing seat (5) is fixedly installed inside the cylinder sleeve (2) at the position of one end of the piston rod (3), a guide rod (6) is fixedly installed on one end surface of the fixing seat (5), an electromagnet (7) is fixedly installed inside the guide rod (6), the piston rod (3) is slidably connected to the outside of the guide rod (6), and a sealing seat (8) is fixedly installed on the outside of one end of the piston rod (3) close to the fixing seat (5); An extrusion seal assembly (13) is fixedly mounted inside the sealing seat (8), the extrusion seal assembly (13) comprising a magnet block (1304) movably connected to the inside of the sealing seat (8), one end of the magnet block (1304) being movably connected to a rotating pair (1305), one end of the rotating pair (1305) being movably connected to an L-shaped extrusion rod (1306), one end of the L-shaped extrusion rod (1306) being fixedly mounted to a piston plate (1307), a top end of the piston plate (1307) being fixedly mounted to a return spring (1308), and an air bag (11) being fixedly mounted on the outside of the sealing seat (8); Spring rods (1301) are embedded and installed at equal intervals inside the sealing seat (8); a moving ring (1302) is fixedly installed between one ends of a plurality of the spring rods (1301); and a check strip (1303) is welded at equal intervals at one end of the moving ring (1302); The number of the magnet blocks (1304) and the non-return strips (1303) corresponds one to one, and a triangular groove is provided on the outer side of the magnet block (1304) at a position corresponding to one end of the non-return strip (1303).
2. A two-end clamping cylinder according to claim 1, It is characterized in that A cylinder is rotatably connected to the middle of the rotating pair (1305) and the cylinder is clamped and installed inside the sealing seat (8). Guide grooves are symmetrically provided at both ends of the rotating pair (1305). A round rod is welded to the middle of the L-shaped extrusion rod (1306) and the magnet block (1304) at a position inside the guide groove.
3. A two-end busy clamping cylinder according to claim 1, It is characterized in that The top end of the sealing head (1) is provided with an oil inlet and outlet hole, and a detection head is installed on the top end of one of the sealing heads (1).
4. A two-end busy clamping cylinder according to claim 2, It is characterized in that A placement groove (9) is provided inside the sealing seat (8) at a position corresponding to the outer side of the magnet block (1304), the rotating pair (1305) and the L-shaped extrusion rod (1306).
5. A two-end busy clamping cylinder according to claim 1, It is characterized in that A placement cavity (10) is provided inside the sealing seat (8) at a position corresponding to the outer side of the piston plate (1307), and an air inlet head of the airbag (11) is connected to the inside of the placement cavity (10).
6. A two-end busy clamping cylinder according to claim 1, It is characterized in that A circular groove (12) is provided inside the sealing seat (8) at a position corresponding to the outside of the moving ring (1302), and the inner diameter and outer diameter of the circular groove (12) are equal to the inner diameter and outer diameter of the moving ring (1302).
7. A two-end busy clamping cylinder according to claim 2, It is characterized in that An L-shaped column is symmetrically welded to one end of the L-shaped extrusion rod (1306), and one end of the L-shaped column is fixedly connected to the bottom end of the piston plate (1307).