Double-support structure for guide sleeve of hydraulic oil cylinder
By setting a double-layer support structure with a support ring and a fixing ring on the guide sleeve of the hydraulic cylinder, the problem of easy damage at the threaded connection of the guide sleeve is solved, and higher radial pressure resistance and sealing performance are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2026-03-31
AI Technical Summary
The threaded connection of the guide sleeve of the existing hydraulic cylinder is easily damaged and deformed under radial pressure, which affects the normal use of the cylinder.
The guide sleeve adopts a double support structure, which forms a double support with the cylinder body through the support ring and the fixed ring. When the guide sleeve is subjected to radial pressure, the support ring and the fixed ring share the force and transmit it to the stabilizer bar and the cylinder body, thereby increasing the bearing threshold.
It significantly improves the guide sleeve's ability to withstand radial pressure, reduces damage to threaded connections, and ensures the linear motion accuracy and sealing performance of the piston rod.
Smart Images
Figure CN224064616U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydraulic cylinder technical field, concretely is hydraulic cylinder guide bush double support structure. BACKGROUND
[0002] The guide bush is the key component for guiding the reciprocating movement of the piston rod in the hydraulic cylinder, ensures the linear motion precision of the piston rod, and reduces the eccentric load and wear.
[0003] And in the prior art, such guide bush is generally fixed at the front end of the cylinder body under the predetermined torque through the thread, only the threaded connection between the guide bush and the cylinder body is supported, so when the telescopic end of the hydraulic cylinder is subjected to the radial pressure, it will directly act on the guide bush, and then directly act on the threaded connection, and the threaded connection is more prone to damage and deformation when subjected to the bending distance, thereby affecting the normal use of the cylinder, therefore, an improved hydraulic cylinder guide bush double support structure is needed. SUMMARY
[0004] The utility model discloses a hydraulic cylinder guide bush double support structure, which solves the problems in the background art.
[0005] To achieve the above object, the utility model provides the following technical scheme: a hydraulic cylinder guide bush double support structure, comprising a cylinder body, a first cylinder cover is arranged at one end of the cylinder body, a second cylinder cover is fixedly arranged at the end of the cylinder body away from the first cylinder cover, a piston is movably arranged in the middle of the cylinder body, an active rod is fixedly arranged in the middle of the piston, a guide bush body is arranged between the first cylinder cover and the active rod, the guide bush body is movably screwed in the first cylinder cover, the guide bush body is movably sleeved on the outer surface of the active rod, a support mechanism for improving the supportability of the guide bush body is arranged on the outer side of the guide bush body, the support mechanism comprises a reinforcing rod, a support ring and a fixing ring, the reinforcing rod is movably inserted into the four corners of the outer surface of the first cylinder cover and the second cylinder cover, the support ring is fixedly arranged at one end of the reinforcing rod, and the fixing ring is fixedly arranged on the surface of the guide bush body.
[0006] Preferably, the end of the reinforcing rod close to the second cylinder cover is movably screwed with a locking screw, and the surface of the reinforcing rod close to the first cylinder cover is fixedly provided with a limiting ring, so that the first cylinder cover and the second cylinder cover can be tightly clamped and fixed at both ends of the cylinder body by screwing the locking screw and cooperating with the limiting ring.
[0007] Preferably, the first cylinder cover and the second cylinder cover are fixedly provided with a connecting head on one side, so that the oil pipe can be conveniently connected through the connecting head to facilitate the injection of hydraulic oil into the cylinder body to drive the piston to move.
[0008] Preferably, a first V-shaped sealing ring is arranged between the guide sleeve body and the movable rod, which can ensure the sealing of the contact position of the guide sleeve body and the movable rod.
[0009] Preferably, a second V-shaped sealing ring is arranged between the piston and the cylinder body, which can ensure the sealing between the piston and the cylinder body.
[0010] Preferably, a twisting block is fixedly arranged on the surface of the guide sleeve body, which can facilitate the rotation of the guide sleeve body, thereby facilitating the threaded dismounting or mounting of the guide sleeve body.
[0011] Compared with the prior art, the utility model has the advantages that:
[0012] 1. When the movable rod is pressed by radial pressure to extrude the guide sleeve body, the support ring and the fixed ring can be stressed together, and finally the stress can be transmitted to the stabilizing rod and the cylinder body, so that the double support effect can be achieved, and the bearing threshold of the guide sleeve body of the device can be significantly improved under radial pressure.
[0013] 2. The utility model is convenient to install in use, and the support ring and the stabilizing rod are fixed together to form a whole, so that the support ring can be fixed at the target position when the stabilizing rod is used to tightly clamp the first cylinder cover and the second cylinder cover, and the operation is convenient, thereby facilitating the popularization and use. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a whole structure schematic view of the hydraulic oil cylinder guide sleeve double support structure of the utility model;
[0015] Figure 2 It is a side view of the hydraulic oil cylinder guide sleeve double support structure of the utility model;
[0016] Figure 3 It is a sectional view of the hydraulic oil cylinder guide sleeve double support structure of the utility model;
[0017] Figure 4 It is the hydraulic oil cylinder guide sleeve double support structure of the utility model Figure 3 It is an enlarged view of A in the hydraulic oil cylinder guide sleeve double support structure of the utility model;
[0018] Figure 5 It is the hydraulic oil cylinder guide sleeve double support structure of the utility model Figure 3 The explosion view.
[0019] In the drawing: 1, cylinder body; 2, first cylinder cover; 3, second cylinder cover; 4, piston; 5, movable rod; 6, guide sleeve body; 7, reinforcing rod; 8, support ring; 9, fixed ring; 10, locking screw; 11, limiting ring; 12, connecting head; 13, first V-shaped sealing ring; 14, second V-shaped sealing ring; 15, twisting block. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.
[0021] Please refer to Figures 1-5 The utility model provides a technical scheme: hydraulic oil cylinder guide sleeve double support structure, including cylinder body 1, first cylinder cover 2 is provided with in cylinder body 1 one end, the second cylinder cover 3 is fixedly arranged with in the one end away from first cylinder cover 2 of cylinder body 1, the movable piston 4 is arranged in the middle part of cylinder body 1, the movable rod 5 is fixedly arranged in the middle part of piston 4, the guide sleeve body 6 is arranged between first cylinder cover 2 and movable rod 5, the guide sleeve body 6 is set in first cylinder cover 2 inside through screw thread activity, the guide sleeve body 6 is movably sleeved in the outer lateral surface of movable rod 5, the support mechanism that improves the support of guide sleeve body 6 is arranged in the outer side of guide sleeve body 6, the support mechanism includes reinforcing rod 7, support ring 8, fixed ring 9.
[0022] The movable reinforcing rod 7 is inserted and arranged at the four corners of the outer lateral surface of first cylinder cover 2 and second cylinder cover 3, one end of the reinforcing rod 7 is fixedly provided with a support ring 8, and a fixed ring 9 is fixedly arranged on the surface of the guide sleeve body 6.
[0023] The connecting head 12 is fixedly arranged on one side of the first cylinder cover 2 and the second cylinder cover 3, and the oil pipe can be conveniently connected through the connecting head 12 to facilitate the injection of hydraulic oil into the cylinder body 1 to drive the piston 4 to move.
[0024] The first V-shaped sealing ring 13 is arranged between the guide sleeve body 6 and the movable rod 5, and the sealing property of the contact position of the guide sleeve body 6 and the movable rod 5 can be ensured through the first V-shaped sealing ring 13.
[0025] The second V-shaped sealing ring 14 is arranged between the piston 4 and the cylinder body 1, and the sealing property between the piston 4 and the cylinder body 1 can be ensured through the second V-shaped sealing ring 14.
[0026] The screwing block 15 is fixedly arranged on the surface of the guide sleeve body 6, and the guide sleeve body 6 can be conveniently rotated through the screwing block 15, so that the threaded dismounting or mounting of the guide sleeve body 6 can be conveniently performed.
[0027] Working principle: the device is assembled first, and then the piston 4 is driven to move in the cylinder body 1 through the injection of hydraulic oil into the cylinder body 1 through the oil pipe connected through the connecting head 12. Figure 5The exploded view shows that the piston 4 is inserted into the cylinder body 1 first, then the first cylinder cover 2 and the second cylinder cover 3 are clamped at both ends of the cylinder body 1, then the stabilizing rod is passed through the first cylinder cover 2 and the second cylinder cover 3 and is fastened by the locking screw 10, so that the fixing of the first cylinder cover 2 and the second cylinder cover 3 can be completed;
[0028] Then the guide sleeve body 6 is screwed and fixed in the first cylinder cover 2 by using a wrench or the like, and at this time Figure 4 As shown, the inner side wall of the support ring 8 and the fixed ring 9 is inclined, so that when the guide sleeve body 6 is screwed and fixed in the first cylinder cover 2, the inner side wall of the support ring 8 and the fixed ring 9 will gradually contact and press each other to apply prestress as the guide sleeve body 6 is tightened. In this way, when the movable rod 5 is pressed and extruded by the radial pressure on the guide sleeve body 6, the support ring 8 and the fixed ring 9 can be stressed together, and finally the radial pressure can be transmitted to the stabilizing rod and the cylinder body 1, so that the double support effect can be achieved. In this way, the threshold value of the guide sleeve body 6 of the device can be significantly improved when subjected to radial pressure;
[0029] And the device is easy to install when in use, the support ring 8 and the stabilizing rod are fixed together as a whole, so that the support ring 8 can be fixed at the target position when the stabilizing rod is used to tighten the first cylinder cover 2 and the second cylinder cover 3. In this way, the operation is convenient, so that the device can be easily popularized and used.
[0030] It should be noted that the double-layer support structure provided in the device can improve the damage threshold of the guide sleeve and the threaded connection when the movable rod 5 is subjected to radial pressure, but it does not mean that the movable rod 5 can withstand radial pressure without limitation after the support structure is provided.
[0031] It should be noted that in this document, relational terms such as first and second and the like can only be used to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such actual relationship or order between these entities or actions. Moreover, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article, or apparatus.
[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A hydraulic cylinder guide sleeve double support structure comprising a cylinder body (1), characterized in that: The cylinder (1) is provided with a first cylinder cover (2) at one end, and a second cylinder cover (3) is fixedly arranged at the end of the cylinder (1) away from the first cylinder cover (2), a piston (4) is movably arranged in the middle of the cylinder (1), the piston (4) is fixedly arranged with a movable rod (5) in the middle, a guide sleeve body (6) is arranged between the first cylinder cover (2) and the movable rod (5), the guide sleeve body (6) is movably screwed in the first cylinder cover (2), the guide sleeve body (6) is movably arranged on the outer surface of the movable rod (5), a support mechanism is arranged on the outer side of the guide sleeve body (6) to improve the supportability of the guide sleeve body (6), the support mechanism comprises a reinforcing rod (7), a support ring (8) and a fixed ring (9), the reinforcing rod (7) is movably arranged at the four corners of the outer surface of the first cylinder cover (2) and the second cylinder cover (3), one end of the reinforcing rod (7) is fixedly arranged with the support ring (8), and the surface of the guide sleeve body (6) is fixedly arranged with the fixed ring (9).
2. The hydraulic cylinder guide sleeve double support structure according to claim 1, characterized in that: One end of the reinforcing rod (7) close to the second cylinder cover (3) is movably screwed with a locking screw (10), and the surface of the reinforcing rod (7) close to the first cylinder cover (2) is fixedly arranged with a limiting ring (11).
3. The hydraulic cylinder guide sleeve double support structure according to claim 1, characterized in that: The first cylinder cover (2) and the second cylinder cover (3) are fixedly arranged with a connecting head (12) on one side.
4. The hydraulic cylinder guide sleeve double support structure according to claim 1, characterized in that: The guide sleeve body (6) and the movable rod (5) are provided with a first V-shaped sealing ring (13).
5. The hydraulic cylinder guide sleeve double support structure according to claim 1, characterized in that: The piston (4) and the cylinder (1) are provided with a second V-shaped sealing ring (14).
6. The hydraulic cylinder guide sleeve double support structure according to claim 1, characterized in that: The surface of the guide sleeve body (6) is fixedly arranged with a twisting block (15).