Sealing test bench unbalance loading experiment device

Abstract

The utility model relates to the technical field of oil cylinder sealing performance testing, in particular to a sealing testboard unbalance loading experiment device, which comprises a support, an eccentric loading device and a sealing testboard, the cylinder body to be tested is fixed on the bracket; the servo electric cylinder is fixed on the bracket and is used for pushing a piston rod of the cylinder body to be tested to move; the fixed block is arranged on a piston rod of the cylinder body to be tested; rolling pieces are rotationally mounted on the two sides of the fixed block; one end of the turnover plate is rotationally mounted at the top of the bracket; the overturning plate is located below the rolling piece. One end of the oil cylinder is rotationally connected with the bracket, and the other end is rotationally connected with the turnover plate; the device also comprises a dismounting assembly which is used for connecting the fixed block and a piston rod of the cylinder body to be tested. The device is simple in structure, unbalance loading test can be carried out on the oil cylinder without using a balancing weight, and the experiment cost and the required space are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinder sealing test, in particular to an eccentric load experimental device of a sealing test bench. Background Art

[0002] In hydraulic systems, the performance of the cylinder, as the actuator, directly impacts the stability and reliability of the entire system. To ensure proper operation under actual operating conditions, various tests are essential, with eccentric load testing being a key component. Eccentric load refers to the operating condition in which a cylinder is subjected to non-axial forces. This condition can lead to increased wear of internal components and damage to seals, thus impacting the cylinder's overall service life and operating efficiency.

[0003] Traditionally, one of the primary methods used for eccentric loading tests on hydraulic cylinders is weight eccentric loading. This method simulates the eccentric loading conditions that can occur in real-world applications by applying additional weight to one side or a specific location of the cylinder. While this method provides a relatively intuitive understanding of the cylinder's performance under eccentric loading, it also has some drawbacks:

[0004] In order to achieve different levels of eccentric loading effects, it is often necessary to prepare counterweights of various specifications, which not only increases the experimental cost but also requires sufficient storage space.

[0005] As the amount of eccentric load required varies, the counterweight used will also change accordingly, which directly leads to an increase in the overall volume of the experimental device, posing a challenge for laboratories with limited space. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a sealing test bench eccentric load test device, which has a simple structure and can perform eccentric load tests on the cylinder without using a counterweight block, thereby reducing the experimental cost and the required space.

[0007] The utility model discloses a sealing test bench eccentric load experimental device, comprising:

[0008] Bracket, fixedly set up to carry other components;

[0009] The cylinder to be tested is fixed on the bracket;

[0010] The servo electric cylinder is fixed on the bracket and is used to push the piston rod of the cylinder to be tested to move;

[0011] The fixed block is installed on the piston rod of the cylinder to be tested; rolling elements are rotatably installed on both sides of the fixed block;

[0012] The turning plate has one end rotatably mounted on the top of the bracket; the turning plate is located below the rolling element;

[0013] An oil cylinder, one end of which is rotatably connected to the bracket, and the other end of which is rotatably connected to the flip plate;

[0014] It also includes a disassembly and assembly component, which is used to connect the fixed block and the piston rod of the cylinder body to be tested.

[0015] As a preferred solution of the present invention, the disassembly and assembly components include:

[0016] The connecting ring is fixedly mounted on the piston rod of the cylinder to be tested; the outer surface of the connecting ring is square; a placement groove for the connecting ring to be slidably inserted is provided on the fixing block; grooves are provided on both sides of the connecting ring;

[0017] Two self-locking components are symmetrically arranged on the fixed block;

[0018] Self-locking components include:

[0019] The long groove 1 is horizontally arranged and arranged along the radial direction of the piston rod of the cylinder to be tested; one end of the long groove 1 is connected to the placement groove;

[0020] Elastic member 1 is located in long groove 1;

[0021] The locking block is slidably mounted in the long slot 1; the side of the locking block facing the cylinder body to be tested is an arc surface;

[0022] An L-shaped plate, one end of which is fixed to the locking block;

[0023] Among them, the two ends of the elastic member are in contact with the inner wall of the long groove and the L-shaped plate respectively; when the fixing block is locked with the connecting ring, the arc surface extends into the groove under the elastic force of the elastic member.

[0024] As a preferred solution of the present invention, the disassembly and assembly components further include:

[0025] Two unlocking components are symmetrically arranged on the fixed block;

[0026] Unlock components include:

[0027] Long groove 2, one end of the long groove 2 is connected to the top of the fixed block, and the other end is connected to the middle of the long groove 1;

[0028] The pushing plate is slidably installed in the long slot two along the length direction of the long slot one; the bottom end of the pushing plate is located between the L-shaped plate and the locking block.

[0029] As a preferred solution of the present invention, the disassembly and assembly components further include:

[0030] An operating plate, both ends of which are rotatably connected to one end of an inclined rod; and the other end of the inclined rod is rotatably connected to the top end of the push plate.

[0031] As a preferred solution of the present invention, the unlocking component further includes:

[0032] The second elastic member is located in the second long groove; both ends of the second elastic member are in contact with the inner wall of the second long groove and the push plate respectively;

[0033] The blocking block is fixed in the second long groove; under the elastic force of the second elastic member, the push plate contacts the blocking block.

[0034] As a preferred solution of the present invention, the self-locking component further includes:

[0035] The limiting block is fixed in the long groove; the limiting block is located between the L-shaped plate and the locking block; under the elastic force of the elastic member, the L-shaped plate contacts the limiting block.

[0036] As a preferred solution of the present invention, the bracket is provided with a through hole; an oil receiving groove is provided below the through hole.

[0037] As a preferred solution of the present invention, a valve is connected to the bottom of the oil receiving tank.

[0038] Compared with the existing technology, the beneficial effects of the present invention are as follows: the present device adopts the design of a servo electric cylinder and an adjustable flip plate, and applies lateral force to the rolling element and the piston rod of the cylinder body to be tested through the flip plate, thereby simulating the overload condition, without the need to use traditional physical counterweights, greatly reducing material costs and space occupancy, and effectively solving the problems of the traditional load-bearing overload method such as the need for additional counterweights, large size, complex operation and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural diagram of the utility model;

[0040] Figure 2 yes Figure 1 Front view of

[0041] Figure 3 It is an exploded view of the cylinder body, disassembled components, fixed blocks and rolling parts under test;

[0042] Figure 4 yes Figure 3 A partial enlarged view of part A in the middle;

[0043] Figure 5 yes Figure 4 The back view after hiding the scroller;

[0044] Figure 6 yes Figure 5 Cross-section at FF;

[0045] Figure 7 yes Figure 6 A partial enlarged view of part B in the middle;

[0046] Figure 8 It is a top view of the piston rod, fixed block and disassembly and assembly components of the cylinder being tested;

[0047] Figure 9 yes Figure 8 Cross-section of the middle CC section;

[0048] Figure 10 yes Figure 9 A partial enlarged view of the middle D part;

[0049] Figure 11 yes Figure 9 A partial enlarged view of the middle E part;

[0050] Figure 12 It is a structural diagram of disassembly and assembly components;

[0051] Markings in the accompanying drawings: 1. bracket; 2. tested cylinder body; 3. servo electric cylinder; 4. fixed block; 5. rolling element; 6. flip plate; 7. connecting shaft; 8. oil cylinder; 9. disassembly and assembly component; 91. connecting ring; 92. placement groove; 93. groove; 94. self-locking component; 941. long groove one; 942. elastic part one; 943. locking block; 944. arc surface; 945. L-shaped plate; 946. limit block; 95. unlocking component; 951. long groove two; 952. push plate; 953. elastic part two; 954. blocking block; 96. operating panel; 97. inclined rod; 10. oil receiving tank. DETAILED DESCRIPTION

[0052] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0053] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0054] Secondly, the term "embodiment" as used herein refers to specific features, structures, or characteristics that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. Example

[0055] Reference Figure 1-Figure 2 This embodiment provides a sealing test bench eccentric load experimental device, comprising:

[0056] Bracket 1, fixedly arranged to carry other components;

[0057] The cylinder body 2 to be tested is fixed on the bracket 1;

[0058] The servo electric cylinder 3 is fixed on the bracket 1 and is used to push the piston rod of the cylinder body 2 to move;

[0059] The fixed block 4 is mounted on the piston rod of the cylinder 2 to be tested; rolling elements 5 are rotatably mounted on both sides of the fixed block 4, and the rolling elements 5 are deep groove ball bearings, and hard rollers can also be used;

[0060] The flip plate 6 has one end rotatably mounted on the top of the bracket 1 via a connecting shaft 7; the flip plate 6 is located below the rolling element 5;

[0061] An oil cylinder 8, one end of which is rotatably connected to the bracket 1, and the other end of which is rotatably connected to the flip plate 6;

[0062] It also includes a disassembly assembly 9, which is used to connect the fixed block 4 and the piston rod of the cylinder body 2 to be tested;

[0063] The specific working process of this device is as follows: before the test, the fixed block 4 is connected to the piston rod using the disassembly and assembly component 9; during the test, the servo electric cylinder 3 is turned on to push the piston rod, the fixed block 4 and the rolling element 5 in the cylinder body 2 to move, and the servo electric cylinder 3 is stopped when the appropriate position is reached, and then the oil cylinder 8 is turned on to rotate the flip plate 6 around the connecting shaft 7. The flip plate 6 will produce a relative displacement in height with the rolling element 5, and the flip plate 6 will produce a lateral thrust on the rolling element 5, thereby realizing an eccentric load test; when conducting an eccentric load test, it is not limited to the above-mentioned test steps, and the angle of the flip plate 6 can be adjusted by the oil cylinder 8 first, and then the position of the rolling element 5 can be adjusted by the servo electric cylinder 3; in order to visualize the test results, temperature sensors, pressure sensors and other devices can be installed on the cylinder body 2 to provide feedback on the actual situation inside the cylinder body 2; after the test is completed, the cylinder body 2 to be tested is quickly removed by the disassembly and assembly component 9 for the next test.

[0064] As a preferred solution of the present invention, the disassembly assembly 9 includes:

[0065] Reference Figure 3 、 Figure 4 、 Figure 6 、 Figure 8 and Figure 9, the connecting ring 91 is fixedly mounted on the piston rod of the cylinder body 2 to be tested. The inner wall of the connecting ring 91 is cylindrical and matches the piston rod. The connecting ring 91 and the piston rod are fixed with bolts arranged in the radial direction. The outer surface of the connecting ring 91 is square. A placement groove 92 for sliding insertion of the connecting ring 91 is provided on the fixing block 4, which can prevent the connecting ring 91 and the fixing block 4 from rotating relative to each other. Grooves 93 are provided on both sides of the connecting ring 91.

[0066] Reference Figure 6 、 Figure 7 、 Figure 11 and Figure 12 , two self-locking components 94 are symmetrically arranged on the fixed block 4;

[0067] The self-locking assembly 94 includes:

[0068] The long groove 941 is horizontally arranged and arranged along the radial direction of the piston rod of the cylinder body 2 to be tested; one end of the long groove 941 is connected to the placement groove 92;

[0069] The elastic member 942 is located in the long groove 941. The elastic member 942 can be a spring or a spring;

[0070] The locking block 943 is slidably mounted in the long groove 941; the locking block 943 has a curved surface 944 on one side facing the cylinder 2 to be tested. Figure 6 As shown, the arc surface 944 faces the cylinder body 2 to be tested;

[0071] An L-shaped plate 945, one end of which is fixed to the locking block 943;

[0072] The two ends of the elastic member 942 are in contact with the inner wall of the long groove 941 and the L-shaped plate 945 respectively; when the fixing block 4 is locked with the connecting ring 91, the arc surface 944 extends into the groove 93 under the elastic force of the elastic member 942;

[0073] The specific working process of disassembling and assembling the assembly 9 is as follows: during installation, first fix the connecting ring 91 on the piston rod of the tested cylinder body 2, then hold the fixing block 4 so that its placement groove 92 is aligned with the already fixed connecting ring 91, and then slide the fixing block 4 along the direction of the piston rod until the connecting ring 91 is completely inserted into the placement groove 92; in the above process, under the elastic force of the elastic member 942, the arc surface 944 of the locking block 943 protrudes from the long groove 941. When the fixing block 4 approaches the connecting ring 91, the side surface of the connecting ring 91 will squeeze the arc surface 944 of the locking block 943, so that the locking block 943 and the L-shaped plate 945 overcome the elastic force of the elastic member 942 and move outward. As the fixing block 4 continues to advance, until the fixing block 4 is tightly attached to the end face of the piston rod, the locking block 943 is facing the grooves 93 on both sides of the connecting ring 91. Under the elastic force of the elastic member 942, the locking block 943 will quickly extend into the groove 93, as shown in FIG. Figure 7 As shown, at this time, one side of the locking block 943 contacts one side of the groove 93. When the fixing block 4 tends to move away from the cylinder body 2 to be measured, the two side surfaces are stuck and both cannot move, thereby achieving the locking of the fixing block 4 and the connecting ring 91. Through the above process, when installing the fixing block 4, it only needs to be simply positioned and pressed to achieve the locking of the fixing block 4. The whole process is very convenient.

[0074] As a preferred embodiment of the present invention, refer to Figure 10-12 , the disassembly assembly 9 also includes:

[0075] Two unlocking components 95 are symmetrically arranged on the fixing block 4;

[0076] The unlocking component 95 includes:

[0077] The second long groove 951 has one end connected to the top of the fixed block 4 and the other end connected to the middle of the first long groove 941;

[0078] The push plate 952 is slidably mounted on the track in the second long slot 951 along the length direction of the first long slot 941 ; the bottom end of the push plate 952 is located between the L-shaped plate 945 and the locking block 943 ;

[0079] The specific working process of the unlocking component 95 is as follows: Figure 12 As shown, in the locked state, the bottom end of the push plate 952 is between the L-shaped plate 945 and the locking block 943, and there is a certain distance between the bottom end of the push plate 952 and the locking block 943. During the locking process, the push plate 952 will not affect the movement of the locking block 943.

[0080] When it is necessary to unlock the fixing block 4 and the connecting ring 91, press the push plate 952 with both hands and move it outward. The bottom end of the push plate 952 will push the L-shaped plate 945 and the locking block 943 to move outward. The elastic member 942 is compressed, so that the locking block 943 is disengaged from the groove 93, and then the fixing block 4 can be removed by pulling out the fixing block 4.

[0081] If the two push plates 952 are connected together without using a related device, two people are required each time the fixing block 4 is removed, which undoubtedly brings inconvenience. Figure 4 、 Figure 5 and Figure 12 , the disassembly assembly 9 also includes:

[0082] An operating plate 96, both ends of which are rotatably connected to one end of an inclined rod 97; the other end of the inclined rod 97 is rotatably connected to the top of the push plate 952;

[0083] When the fixing block 4 needs to be removed, one hand presses the operating plate 96 downwards, and under the push of the inclined rod 97, the two push plates 952 can be moved outwards, and then the other hand is used to pull out the fixing block 4. In this way, the removal of the fixing block 4 can be completed by one person.

[0084] If the elastic member 2 953 is not provided, the reset of the operating plate 96 and the push plate 952 depends entirely on the elastic force of the elastic member 1 942. Since the elastic member 1 942 is at the bottom of the push plate 952, it is possible that the sliding is not smooth. As a preferred solution of the present invention, refer to Figure 11 and Figure 12 , the unlocking component 95 further includes:

[0085] The second elastic member 953 is located in the second long groove 951 and is provided with two elastic members 953; the two ends of the second elastic member 953 are in contact with the inner wall of the second long groove 951 and the push plate 952 respectively;

[0086] The blocking block 954 is fixed in the second long groove 951; under the elastic force of the second elastic member 953, the push plate 952 contacts the blocking block 954;

[0087] like Figure 10 and Figure 11 As shown, under the elastic force of the second elastic member 953, the push plate 952 contacts the blocking block 954, which limits the push plate 952; when the operating plate 96 moves downward, the push plate 952 moves outward to squeeze the elastic member 953. After the operating plate 96 is released, under the elastic force of the second elastic member 953, the push plate 952 and the operating plate 96 can automatically reset.

[0088] If the locking block 943 is not limited, it is difficult to control the position of the locking block 943. As a preferred solution of the present invention, refer to Figure 11 and Figure 12 , the self-locking component 94 also includes:

[0089] The limit block 946 is fixed in the long groove 941; the limit block 946 is between the L-shaped plate 945 and the locking block 943; under the elastic force of the elastic member 942, the L-shaped plate 945 contacts the limit block 946; Figure 7 As shown, at this time, the locking block 943 extends into the groove 93, and the L-shaped plate 945 contacts the limiting block 946. The limiting block 946 is below the pushing plate 952 and will not affect the movement of the pushing plate 952.

[0090] As a preferred embodiment of the present invention, refer to Figure 2 The bracket 1 is provided with a through hole; an oil receiving groove 10 is provided below the through hole; the oil cylinder 8 is installed at the through hole, and an oil receiving groove 10 is provided below the through hole for collecting the oil flowing out during the test.

[0091] As a preferred solution of the present invention, a valve is connected to the bottom of the oil receiving tank 10, and the discharge of oil can be conveniently controlled by the valve, without the need to manually dump the oil receiving tank 10, thereby reducing the difficulty and time of operation.

[0092] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A sealing test bench eccentric load test device, characterized in that: include: A bracket (1), fixedly arranged to carry other components; The cylinder body (2) to be tested is fixed on the bracket (1); A servo electric cylinder (3) is fixed on the bracket (1) and is used to push the piston rod of the cylinder body (2) to move; A fixed block (4) is mounted on the piston rod of the cylinder (2) to be tested; rolling elements (5) are rotatably mounted on both sides of the fixed block (4); A flip plate (6), one end of which is rotatably mounted on the top of the bracket (1); the flip plate (6) is located below the rolling element (5); An oil cylinder (8), one end of which is rotatably connected to the bracket (1) and the other end of which is rotatably connected to the flip plate (6); It also includes a disassembly assembly (9), which is used to connect the fixed block (4) and the piston rod of the tested cylinder (2).

2. The sealing test bench eccentric load test device according to claim 1, characterized in that: The disassembly and assembly component (9) comprises: A connecting ring (91) is fixedly sleeved on the piston rod of the cylinder (2) to be tested; the outer surface of the connecting ring (91) is square; a placement groove (92) for sliding insertion of the connecting ring (91) is provided on the fixing block (4); grooves (93) are provided on both sides of the connecting ring (91); Two self-locking components (94) are symmetrically arranged on the fixed block (4); The self-locking assembly (94) comprises: The long groove (941) is arranged horizontally and along the radial direction of the piston rod of the cylinder (2) to be tested; one end of the long groove (941) is connected to the placement groove (92); Elastic member 1 (942), located in the long groove 1 (941); A locking block (943) is slidably mounted in the first long groove (941); a side of the locking block (943) facing the cylinder body (2) to be tested is an arc surface (944); An L-shaped plate (945), one end of which is fixed to the locking block (943); Wherein, the two ends of the elastic member 1 (942) are in contact with the inner wall of the long groove 1 (941) and the L-shaped plate (945) respectively; when the fixing block (4) is locked with the connecting ring (91), under the elastic force of the elastic member 1 (942), the arc surface (944) extends into the groove (93).

3. The sealing test bench eccentric load test device according to claim 2, characterized in that: The disassembly and assembly component (9) further comprises: Two unlocking components (95) are symmetrically arranged on the fixing block (4); The unlocking component (95) comprises: A second long groove (951), one end of the second long groove (951) is connected to the top of the fixed block (4), and the other end is connected to the middle of the first long groove (941); The push plate (952) is slidably installed in the second long groove (951) along the length direction of the first long groove (941); the bottom end of the push plate (952) is located between the L-shaped plate (945) and the locking block (943).

4. The sealing test bench eccentric load test device according to claim 3, characterized in that: The disassembly assembly component (9) further includes: An operating plate (96) is provided, wherein both ends of the operating plate (96) are rotatably connected to one end of an inclined rod (97); and the other end of the inclined rod (97) is rotatably connected to the top end of the push plate (952).

5. The sealing test bench eccentric load test device according to claim 3, characterized in that: The unlocking component (95) further comprises: Elastic member 2 (953), said elastic member 2 (953) is located in said long groove 2 (951); two ends of said elastic member 2 (953) are in contact with the inner wall of said long groove 2 (951) and said push plate (952) respectively; The blocking block (954) is fixed in the second long groove (951); under the elastic force of the second elastic member (953), the pushing plate (952) contacts the blocking block (954).

6. The sealing test bench eccentric load test device according to claim 2, characterized in that: The self-locking assembly (94) further comprises: A limit block (946) is fixed in the long groove (941); the limit block (946) is located between the L-shaped plate (945) and the locking block (943); under the elastic force of the elastic member (942), the L-shaped plate (945) contacts the limit block (946).

7. The sealing test bench eccentric load test device according to claim 1, characterized in that: The bracket (1) is provided with a through hole; an oil receiving groove (10) is provided below the through hole.

8. The sealing test bench eccentric load test device according to claim 7, characterized in that: The bottom of the oil receiving tank (10) is connected to a valve.

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