Detection device for hydraulic cylinder

Abstract

The utility model relates to the technical field of hydraulic cylinder detection, and discloses a detection device for a hydraulic cylinder, which comprises a detection device body, a detection mechanism is arranged at the top of the detection device body, a fixing mechanism is arranged on the left side of the top of the detection device body, and the detection mechanism comprises a detection assembly and a moving assembly. The detection assembly is arranged at the top of the moving assembly, the moving assembly is arranged at the top of the detection device body, during use, through the arranged detection mechanism, the double-shaft air cylinder can drive the connecting shaft to ascend and descend, the attaching block makes contact with the inner wall of the cylinder body, and the radius of the cylinder body is judged through the moving distance of the connecting shaft on the scale line; the initial diameter of the cylinder body is obtained through the radius, the diameters of the inner walls of the cylinder bodies with different sizes can be detected through automatic lifting of the connecting shaft, meanwhile, the detection efficiency is improved, and during measurement, the connecting shaft can be driven to rotate and move left and right so as to carry out omnibearing detection on the inner walls of the cylinder bodies.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinder detection, in particular to a detection device for a hydraulic cylinder. Background Art

[0002] A hydraulic cylinder is a device that converts hydraulic energy into mechanical energy. It is mainly used to achieve linear reciprocating motion or swinging motion. The working principle of a hydraulic cylinder is to apply different hydraulic pressures to the front and rear end faces of the piston. Due to the unbalanced force generated at the two end faces of the piston, the piston and the piston rod are pushed to transmit power. During the long-term working process, the cylinder body and the piston of the hydraulic cylinder are worn during operation, resulting in different inner diameter values ​​of the cylinder body. The hydraulic cylinder will have poor sealing, unstable movement, oil leakage and other phenomena. Therefore, it is necessary to regularly inspect the hydraulic cylinder, check the wear of the inner wall of the cylinder body, and judge whether the cylinder body can continue to be used based on the detected values.

[0003] According to a detection device for a hydraulic cylinder body published on the patent website (authorization announcement number: CN 210512948U), the detection device for the hydraulic cylinder body includes "pipes, positioning mechanisms, cylinder body parts", etc. to detect the cylinder body.

[0004] In view of the above description, the applicant believes that there are the following problems:

[0005] The detection device of the hydraulic cylinder body utilizes pipelines, positioning mechanisms, cylinder body parts, etc. to detect the cylinder body. When this device is in use, when it is necessary to detect other parts of the cylinder body, it is necessary to manually turn the knob to make the rotating shaft drive the single gear to engage with the rack, thereby moving the moving rod. The efficiency is low and the detection can only be performed on the same horizontal plane. The detection effect is poor, so this device needs to be improved. Utility Model Content

[0006] The purpose of the utility model is to provide a detection device for a hydraulic cylinder to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical solutions: a detection device for a hydraulic cylinder, comprising a detection device body, a detection mechanism is arranged on the top of the detection device body, and a fixing mechanism is arranged on the left side of the top of the detection device body;

[0008] The detection mechanism comprises a detection component and a moving component. The detection component is arranged on the top of the moving component, and the moving component is arranged on the top of the detection device body.

[0009] Preferably, the detection component includes a rotating rod, which is rotatably connected to the inside of the moving component, a worm gear is fixedly connected to the periphery of the rotating rod, a load-bearing plate is fixedly connected to the left side of the rotating rod, an arc block is fixedly connected to the right side of the load-bearing plate, the arc block is slidably connected to the inside of the moving component, a scale line is fixedly connected to the left side of the load-bearing plate, a double-axis cylinder is fixedly connected to the inside of the load-bearing plate, a connecting shaft is fixedly connected to the left side of the double-axis cylinder, and a fitting block is fixedly connected to the left side of the top of the connecting shaft.

[0010] Preferably, the fitting block is in an arc shape, and a rubber pad is arranged on the periphery of the fitting block, so as to facilitate detection of the inner wall diameter of the cylinder body by making the fitting block contact with the inner wall of the hydraulic cylinder body.

[0011] Preferably, the moving component includes a first servo motor, which is fixedly connected to the right side of the detection device body, a first threaded rod is fixedly connected to the left side of the first servo motor, the left side of the first threaded rod is rotatably connected to the inside of the detection device body, a threaded block is threadedly connected to the outer periphery of the first threaded rod, a fixed plate is fixedly connected to the top of the threaded block, a second servo motor is fixedly connected to the top of the right side of the fixed plate, a worm is fixedly connected to the top of the second servo motor, and the worm is engaged with the front side of the worm wheel.

[0012] Preferably, a through hole with the same rotation trajectory as the rotating rod is opened inside the fixed plate, the rotating rod is rotatably connected to the through hole, a circular groove with the same sliding trajectory as the arc block is opened on the left side of the fixed plate, the arc block is slidably connected to the circular groove, a sliding groove is opened on the top of the detection device body, and the threaded block is slidably connected to the sliding groove, so that the arc block can slide in the circular groove to support and limit the load-bearing plate, thereby ensuring the stability of the load-bearing plate during rotation, and the threaded block can slide in the sliding groove to limit the threaded block, thereby making the movement more stable.

[0013] Preferably, the fixing mechanism includes a load-bearing frame, which is fixedly connected to the left side of the top of the detection device body, a fixing sleeve is fixedly connected to the inner side of the load-bearing frame, a second threaded rod is threadedly connected to the inside of the fixing sleeve, a knob is fixedly connected to the front side of the second threaded rod, and a splint is rotatably connected to the rear side of the second threaded rod.

[0014] Preferably, the clamping plate is arc-shaped, and an anti-skid protective pad is provided on the inner side of the clamping plate, so that hydraulic cylinder bodies of different sizes can be fixed by the clamping plate to ensure that the cylinder body is in a stable state when the inner wall diameter of the cylinder body is detected.

[0015] Compared with the prior art, the utility model provides a detection device for a hydraulic cylinder, which has the following beneficial effects:

[0016] 1. The detection device for the hydraulic cylinder can drive the connecting shaft to move up and down through the detection mechanism, so that the fitting block and the inner wall of the cylinder body are in contact with each other. The cylinder body radius can be judged by the distance the connecting shaft moves on the scale line, and the initial diameter of the cylinder body can be obtained through the radius. The connecting shaft can be automatically lifted and lowered to detect the inner wall diameters of the cylinder body of different sizes, and the detection efficiency is improved at the same time. When measuring, the connecting shaft can be driven to rotate and move left and right, and the inner wall of the cylinder body can be fully detected. The radius of the inner wall at each location is repeatedly measured multiple times to improve the accuracy of the data. First, the threaded block connected to the outer thread of the first threaded rod is driven to move left and right through the first servo motor. When the threaded block moves left and right, it will drive the fixed plate to move, so that the fixed plate moves the connecting shaft to the cylinder mouth of the cylinder body. According to the size of the inner wall of the cylinder body, the connecting shaft is driven to move up and down through the double-axis cylinder, so that the connecting shaft drives the fitting block to move up and down, so that the outer periphery of the fitting block is in contact with each other on the inner wall of the cylinder body. The initial radius value of the cylinder body can be recorded through the distance the connecting shaft moves on the scale line, and the diameter can be obtained.

[0017] 2. The detection device for the hydraulic cylinder can fix cylinder bodies of different sizes when detecting the inner wall diameter of the hydraulic cylinder through the set fixing mechanism, so as to ensure that the cylinder body is in a stable state during the detection and improve the detection effect. First, the hydraulic cylinder body is slid into the fixing sleeve, and the knob is turned to make the second threaded rod drive the clamping plate to move back and forth, so that the inner side of the clamping plate and the outer side of the cylinder body are in contact with each other, and the cylinder body is clamped and fixed, so that the cylinder body is in a stable state, and the anti-skid protection pad arranged on the inner side of the clamping plate can protect and prevent the cylinder body from skidding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the testing mechanism;

[0021] Figure 3 It is a schematic diagram of the detection component structure;

[0022] Figure 4 It is a schematic diagram of the structure on the left side of the rotating rod;

[0023] Figure 5 It is a schematic diagram of the structure of the mobile component;

[0024] Figure 6 It is a schematic diagram of the fixed mechanism structure;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the fixed sleeve.

[0026] In the figure: 1. detection device body; 2. detection mechanism; 3. fixing mechanism; 21. detection assembly; 22. moving assembly; 211. rotating rod; 212. worm gear; 213. arc block; 214. load-bearing plate; 215. scale line; 216. double-axis cylinder; 217. connecting shaft; 218. fitting block; 221. first servo motor; 222. threaded block; 223. first threaded rod; 224. fixing plate; 225. second servo motor; 226. worm; 31. load-bearing frame; 32. fixing sleeve; 33. knob; 34. second threaded rod; 35. clamping plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The utility model provides the following technical solutions:

[0030] Embodiment 1

[0031] See also Figure 1-7 The utility model provides a technical solution: a detection device for a hydraulic cylinder, including a detection device body 1, a detection mechanism 2 is arranged on the top of the detection device body 1, a fixing mechanism 3 is arranged on the left side of the top of the detection device body 1, the detection mechanism 2 includes a detection component 21 and a moving component 22, the detection component 21 is arranged on the top of the moving component 22, and the moving component 22 is arranged on the top of the detection device body 1.

[0032] The detection component 21 includes a rotating rod 211, which is rotatably connected to the inside of the moving component 22, a worm gear 212 is fixedly connected to the periphery of the rotating rod 211, a load-bearing plate 214 is fixedly connected to the left side of the rotating rod 211, an arc block 213 is fixedly connected to the right side of the load-bearing plate 214, the arc block 213 is slidably connected to the inside of the moving component 22, a scale line 215 is fixedly connected to the left side of the load-bearing plate 214, a double-axis cylinder 216 is fixedly connected to the inside of the load-bearing plate 214, a connecting shaft 217 is fixedly connected to the left side of the double-axis cylinder 216, a fitting block 218 is fixedly connected to the left side of the top of the connecting shaft 217, the fitting block 218 is arc-shaped, and a rubber pad is arranged on the periphery of the fitting block 218, so as to detect the inner wall diameter of the cylinder body by making the fitting block 218 contact with the inner wall of the hydraulic cylinder body.

[0033] See also Figure 1-7 The utility model provides a technical solution: the moving component 22 includes a first servo motor 221, the first servo motor 221 is fixedly connected to the right side of the detection device body 1, the first servo motor 221 is fixedly connected to the left side with a first threaded rod 223, the first threaded rod 223 is rotatably connected to the inside of the detection device body 1 on the left side, the first threaded rod 223 is threadedly connected to a threaded block 222 on the outer periphery of the first threaded rod 223, the threaded block 222 is fixedly connected to a fixing plate 224 on the top, the fixing plate 224 is fixedly connected to the top right side with a second servo motor 225, the second servo motor 225 is fixedly connected to the top with a worm 226, the worm 226 is meshed with the front side of the worm wheel 212, and the fixing plate A through hole with the same rotation trajectory as the rotating rod 211 is provided inside 224, and the rotating rod 211 is rotatably connected in the through hole. A circular groove with the same sliding trajectory as the arc block 213 is provided on the left side of the fixed plate 224, and the arc block 213 is slidably connected in the circular groove. A sliding groove is provided on the top of the detection device body 1, and the threaded block 222 is slidably connected in the sliding groove. By making the arc block 213 slide in the circular groove, the arc block 213 can support and limit the load-bearing plate 214, thereby ensuring the stability of the load-bearing plate 214 during rotation, and by making the threaded block 222 slide in the sliding groove, the threaded block 222 can be limited, making the movement more stable.

[0034] Embodiment 2

[0035] See also Figure 1-7On the basis of the first embodiment, the fixing mechanism 3 further comprises a load-bearing frame 31, the load-bearing frame 31 is fixedly connected to the left side of the top of the detection device body 1, a fixing sleeve 32 is fixedly connected to the inner side of the load-bearing frame 31, a second threaded rod 34 is threadedly connected to the inner side of the fixing sleeve 32, a knob 33 is fixedly connected to the front side of the second threaded rod 34, a clamping plate 35 is rotatably connected to the rear side of the second threaded rod 34, the clamping plate 35 is arc-shaped, and an anti-slip protection pad is arranged on the inner side of the clamping plate 35, so that the hydraulic cylinder bodies of different sizes can be fixed by the clamping plate 35, so as to ensure that the cylinder body is in a stable state when the inner wall diameter of the cylinder body is detected.

[0036] In actual operation, when the device is used, first slide the hydraulic cylinder body into the fixing sleeve 32, turn the knob 33, and make the second threaded rod 34 drive the clamping plate 35 to move forward and backward, so that the inner side of the clamping plate 35 and the outer side of the cylinder body contact each other, clamp and fix the cylinder body, and make the cylinder body in a stable state. The anti-skid protection pad provided on the inner side of the clamping plate 35 can protect and prevent the cylinder body from skidding, and then drive the threaded block 222 connected to the outer thread of the first threaded rod 223 through the first servo motor 221 to move forward. When the threaded block 222 moves left and right, it will drive the fixed plate 224 to move, so that the fixed plate 224 moves the connecting shaft 217 to the cylinder mouth of the cylinder body. According to the size of the inner wall of the cylinder body, the connecting shaft 217 is driven to rise and fall by the double-axis cylinder 216, so that the connecting shaft 217 drives the fitting block 218 to rise and fall, so that the periphery of the fitting block 218 contacts the inner wall of the cylinder body. The distance moved by the connecting shaft 217 on the scale line 215 can be recorded to obtain the initial radius value of the cylinder body. The first threaded rod 223 is rotated to make the connecting shaft 217 drive the fitting block 218 to continue to move left and right inside the cylinder body, and different parts of the cylinder body are tested. When it can continue to move, it means that the inner wall diameter here is the same as that at the cylinder mouth. When it cannot continue to move, the connecting shaft 217 is driven to rise and fall by the double-axis cylinder 216, thereby driving the fitting block 218 to rise and fall, so that the fitting block 218 is again fitted with the tested part, and the tested radius value is recorded, and repeated testing is performed on different parts. The detection accuracy can be improved. During the detection, the worm 226 can be driven to rotate by the second servo motor 225, so that the worm 226 drives the rotating rod 211 fixedly connected in the worm wheel 212 to rotate, and the fitting block 218 can be driven to rotate by the load-bearing plate 214 to detect different parts of the inner wall of the cylinder body. When the load-bearing plate 214 rotates, it will drive the arc block 213 to slide in the circular groove. The arc block 213 can support and limit the load-bearing plate 214, making the rotation more stable.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A detection device for a hydraulic cylinder, comprising a detection device body (1), characterized in that: A detection mechanism (2) is arranged on the top of the detection device body (1), and a fixing mechanism (3) is arranged on the left side of the top of the detection device body (1); The detection mechanism (2) comprises a detection component (21) and a moving component (22); the detection component (21) is arranged on the top of the moving component (22); and the moving component (22) is arranged on the top of the detection device body (1).

2. A detection device for a hydraulic cylinder according to claim 1, characterized in that: The detection component (21) comprises a rotating rod (211), wherein the rotating rod (211) is rotatably connected to the inside of the moving component (22), a worm gear (212) is fixedly connected to the periphery of the rotating rod (211), a load-bearing plate (214) is fixedly connected to the left side of the rotating rod (211), an arc block (213) is fixedly connected to the right side of the load-bearing plate (214), the arc block (213) is slidably connected to the inside of the moving component (22), a scale line (215) is fixedly connected to the left side of the load-bearing plate (214), a double-axis cylinder (216) is fixedly connected to the inside of the load-bearing plate (214), a connecting shaft (217) is fixedly connected to the left side of the double-axis cylinder (216), and a fitting block (218) is fixedly connected to the left side of the top of the connecting shaft (217).

3. A detection device for a hydraulic cylinder according to claim 2, characterized in that: The fitting block (218) is in an arc shape, and a rubber pad is arranged on the periphery of the fitting block (218).

4. A detection device for a hydraulic cylinder according to claim 1, characterized in that: The moving assembly (22) comprises a first servo motor (221), the first servo motor (221) is fixedly connected to the right side of the detection device body (1), the first servo motor (221) is fixedly connected to a first threaded rod (223) on the left side, the first threaded rod (223) is rotatably connected to the inside of the detection device body (1), the first threaded rod (223) is threadedly connected to a threaded block (222) on the outer periphery, the threaded block (222) is fixedly connected to a fixing plate (224) on the top, the fixing plate (224) is fixedly connected to a second servo motor (225) on the top right side, the second servo motor (225) is fixedly connected to a worm (226) on the top, and the worm (226) is meshed with the front side of the worm wheel (212).

5. A detection device for a hydraulic cylinder according to claim 4, characterized in that: A through hole having the same rotation track as that of the rotating rod (211) is provided inside the fixed plate (224), and the rotating rod (211) is rotatably connected in the through hole. A circular groove having the same sliding track as that of the arc block (213) is provided on the left side of the fixed plate (224), and the arc block (213) is slidably connected in the circular groove. A sliding groove is provided on the top of the detection device body (1), and the threaded block (222) is slidably connected in the sliding groove.

6. A detection device for a hydraulic cylinder according to claim 1, characterized in that: The fixing mechanism (3) comprises a load-bearing frame (31), the load-bearing frame (31) is fixedly connected to the left side of the top of the detection device body (1), a fixing sleeve (32) is fixedly connected to the inner side of the load-bearing frame (31), a second threaded rod (34) is threadedly connected to the inside of the fixing sleeve (32), a knob (33) is fixedly connected to the front side of the second threaded rod (34), and a clamping plate (35) is rotatably connected to the rear side of the second threaded rod (34).

7. A detection device for a hydraulic cylinder according to claim 6, characterized in that: The clamping plate (35) is in an arc shape, and an anti-slip protection pad is arranged on the inner side of the clamping plate (35).

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