A hydraulic cylinder stroke testing machine convenient to install

Abstract

A kind of hydraulic cylinder stroke test machine of easy installation, the present application relates to stroke detection technical field;Plug rod is fixed on the side wall adjacent to the bottom plate of movable plate, plug rod is movably inserted in the bottom plate;Scale is fixed below the front side of the side wall adjacent to the bottom plate of movable plate, scale is movably inserted in the bar slot on the front side wall of bottom plate;Two ends of connecting spring are fixedly connected with the inner wall of bottom plate and the inner wall of plug rod;Moving mechanism is arranged on the upper side of bottom plate, moving mechanism is connected with fixed frame;Clamping mechanism is arranged on the side wall of fixed frame, clamping mechanism is suspended on the upper side of moving mechanism;Mounting plate is arranged on the upper side of bottom plate, mounting plate is connected with moving mechanism;Oil pipe is inserted on mounting plate, one end of oil pipe is connected with the connecting head of required detection hydraulic cylinder;Mounting seat is arranged on fixed frame and movable plate;Positioning mechanism is arranged in mounting seat;It can be convenient to install various oil cylinders, and installation is flexible, so that oil cylinder detection is simple, cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of stroke detection technology, and specifically to a hydraulic cylinder stroke testing machine that is easy to install. Background Technology

[0002] With the continuous development of modern industry, hydraulic transmission technology has been widely applied and developed in many industries around the world. Hydraulic cylinder components are hydraulic mechanisms that realize linear reciprocating motion or reciprocating oscillation of less than 360°. They are the main actuators widely used in hydraulic systems. Therefore, the quality and performance of hydraulic cylinders have become key issues in hydraulic systems. How to test the quality and performance of hydraulic cylinders has become a problem that hydraulic cylinder manufacturers have to consider. Existing cylinder testing machines have complex structures and are not flexible in installation when testing various cylinders, making cylinder testing cumbersome and complicated, and greatly increasing costs. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a well-designed, easy-to-use, and conveniently installed hydraulic cylinder stroke testing machine. This machine facilitates the installation of various hydraulic cylinders, offers flexible installation options, simplifies cylinder testing, and reduces costs.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: it comprises a base plate, a fixed frame, and a movable plate; the fixed frame is provided on one side of the upper surface of the base plate, and the movable plate is provided on one side of the base plate; it further comprises:

[0005] The insert rods are of several kinds and are fixed at equal intervals from front to back on one side wall of the movable plate adjacent to the bottom plate. The insert rods are movably inserted into the bottom plate.

[0006] A scale, wherein the scale is fixed below the front side of the movable plate adjacent to the side wall of the base plate, and the scale is movably inserted into the strip groove on the front side wall of the base plate;

[0007] A connecting spring, wherein there are several connecting springs, and each of them is embedded in the insert rod in a corresponding manner. The two ends of the connecting spring are fixedly connected to the inner wall of the base plate and the inner wall of the insert rod, respectively.

[0008] A moving mechanism is disposed on the upper side of the base plate and is connected to the fixed frame;

[0009] A clamping mechanism is provided on one side wall of the fixed frame and suspended above the moving mechanism.

[0010] Mounting plates, there are two mounting plates, which are symmetrically arranged on the upper side of the base plate, and the mounting plates are connected to the moving mechanism.

[0011] Oil pipes, the oil pipes are two, and one of the oil pipes is correspondingly arranged on the mounting plate, and one end of the oil pipe is connected with the connector of the hydraulic cylinder to be detected;

[0012] Mounting seats, the mounting seats are two, and the mounting seats are respectively arranged on the fixed frame and the movable plate;

[0013] Positioning mechanisms, the positioning mechanisms are two, and the positioning mechanisms are correspondingly arranged in the mounting seats, and the positioning mechanisms are arranged adjacent to one side of the center of the bottom plate;

[0014] According to the length of the hydraulic cylinder, the fixed frame is driven to move by the moving mechanism until the fixed frame moves to the appropriate position, then the positioning ring on the fixed end of the hydraulic cylinder is sleeved on the positioning mechanism on the fixed frame, the hydraulic cylinder is clamped by the clamping mechanism, the clamping mechanism is limited, then the positioning ring on the movable end of the hydraulic cylinder is sleeved on the positioning mechanism on the movable plate, the connector on the hydraulic cylinder is connected with the oil pipes on both sides, the hydraulic cylinder is started, the piston rod of the hydraulic cylinder drives the movable plate to move through the positioning mechanism, the movable plate drives the inserting rod to move, and the inserting rod stretches the connecting spring, so that the inserting rod is prevented from moving out of the bottom plate.

[0015] As a further improvement of the application, the moving mechanism comprises:

[0016] A moving plate is arranged on the upper side of the bottom plate, the lower side of the fixed frame is fixed on the upper surface of the moving plate, the mounting plates are arranged on the front and rear sides of the upper surface of the moving plate, and the sliding bars are fixed on the front and rear sides of the lower surface of the moving plate and are slidingly arranged in the sliding grooves on the bottom plate.

[0017] Two moving lead screws are symmetrically embedded in the bottom plate, the moving lead screws are penetratingly and threadedly connected with the sliding bars, the two ends of the moving lead screws are respectively connected with the two side walls of the bottom plate through bearings, and the front and rear moving lead screws are connected through the synchronous wheel transmission assembly.

[0018] A moving motor is embedded in one side of the bottom plate, the moving motor is connected with an external power supply, and the output shaft of the moving motor is fixedly connected with one end of one of the moving lead screws.

[0019] According to the above technical scheme, the moving motor is started, the moving motor drives the moving lead screw connected with the moving motor to rotate, the moving lead screw drives the other moving lead screw to rotate through the synchronous wheel transmission assembly, the moving lead screw drives the sliding bar to move through the thread, the sliding bar drives the moving plate to move, and the moving plate drives the fixed frame to move.

[0020] As a further improvement of the present application, the mounting plate is fixed with a connecting plate on the side wall of the moving plate, the connecting plate is in contact with the side wall of the moving plate, a plurality of threaded holes are equidistantly arranged on the front and rear side walls of the moving plate, and the fixing bolt is screwed in the corresponding threaded hole after passing through the connecting plate.

[0021] According to the above technical solution, the fixing bolt is loosened according to the position of the connecting head of the hydraulic cylinder to be tested, and then the connecting plate and the mounting plate are moved to the appropriate position, and then the fixing bolt is screwed in the corresponding threaded hole after passing through the connecting plate.

[0022] As a further improvement of the present application, the clamping mechanism comprises:

[0023] A plurality of clamping rods are arranged at equal angles on one side of the fixed frame adjacent to the center of the bottom plate, one end of each clamping rod is fixed with a sliding block, and the sliding block is slidingly arranged in a sliding groove on the side wall of the fixed frame;

[0024] A plurality of clamping blocks are arranged one by one on one side wall of the clamping rod adjacent to the center of the fixed frame;

[0025] A plurality of clamping lead screws are arranged at equal angles in the fixed frame, and each clamping lead screw is screwed in the sliding block through a thread, and the upper and lower ends of each clamping lead screw are screwed in the upper and lower inner walls of the sliding groove of the fixed frame through bearings;

[0026] A fixing seat is fixed on the side wall of the fixed frame away from the center of the bottom plate, a plurality of adjusting rods are screwed in the fixing seat through bearings, each adjusting rod is arranged one by one with a clamping lead screw, and each adjusting rod is connected with a clamping lead screw through a synchronous wheel transmission assembly;

[0027] A plurality of bevel gears are arranged one by one on the adjacent ends of the adjusting rods, and the bevel gears are meshed with each other;

[0028] A clamping motor is fixed on the outer bottom wall of the fixing seat, the clamping motor is connected with an external power supply, and the clamping motor is fixedly connected with the lower end of the adjusting rod on the lower side;

[0029] According to the above technical solution, the clamping motor is started, the clamping motor drives the adjusting rod connected thereto to rotate, the adjusting rod drives the bevel gear thereon to rotate, the bevel gear drives the other bevel gears to rotate, the bevel gears drive the adjusting rods thereon to rotate, the adjusting rods drive the clamping lead screws to rotate simultaneously through the synchronous wheel transmission assembly, the clamping lead screws drive the sliding blocks thereon to move towards the center of the fixed frame, the sliding blocks drive the clamping blocks to move through the clamping rods, and the clamping blocks are in contact with the hydraulic cylinder.

[0030] As a further improvement of the application, the anti-skid strips are fixed on the side walls of the clamping rods.

[0031] Through the above technical scheme, when the clamping blocks clamp the hydraulic oil cylinder, the anti-skid strips increase the friction between the clamping blocks and the hydraulic oil cylinder.

[0032] As a further improvement of the application, the positioning mechanism comprises:

[0033] The positioning plate is inserted into the mounting seat and exposed on the side of the mounting seat adjacent to the center of the bottom plate after passing through one side of the mounting seat.

[0034] The fixing plate is fixed on the center of the upper surface of the positioning plate, and the positioning rods are arranged on the front and rear sides of the fixing plate, and the top ends of the positioning rods away from the side walls of the fixing plate are provided with positioning inclined wedges.

[0035] The moving blocks are two and correspondingly fixed on the bottom ends of the positioning rods, and the moving blocks are slidingly arranged in the sliding grooves on the upper surface of the positioning plate.

[0036] The positioning springs are a plurality of and fixed on the front and rear side walls of the fixing plate in equal amounts and equal distances, and the other ends of the positioning springs are fixed on the positioning rods.

[0037] Through the above technical scheme, the positioning ring on the hydraulic oil cylinder is abutted against the top walls of the two positioning inclined wedges, and then the positioning ring is pressed downward, so that the positioning inclined wedges drive the positioning rods to move to one side of the fixing plate until the positioning ring is located below the positioning inclined wedges, at this time, the positioning springs push the positioning rods to move to both sides, so as to limit the positioning ring through the positioning inclined wedges.

[0038] As a further improvement of the application, the fixing frame and the movable plate are provided with rectangular grooves, the mounting seat is movably arranged in the rectangular grooves, one side wall of the mounting seat is fixedly connected with the nut on the adjusting screw rod, the lower end of the adjusting screw rod is rotatably connected with the side inner wall of the rectangular groove through a bearing, the upper end of the adjusting screw rod passes through the upper side wall of the rectangular groove and is connected with the output shaft of the driving motor, the driving motor is connected with an external power supply, the other side wall of the mounting seat is connected with the linear bearing on the guide rod, and the upper and lower ends of the guide rod are fixed on the upper and lower inner walls of the rectangular groove.

[0039] Through the above technical scheme, according to the size of the ring pipe diameter of the positioning ring, the driving motor is started, the driving motor drives the adjusting screw rod to rotate, the adjusting screw rod drives the mounting seat to move up and down through the nut thereon, so that the mounting seat moves up and down in the rectangular groove until the mounting seat moves to the appropriate position, thereby facilitating to ensure that the hydraulic oil cylinder is in the center of the clamping mechanism.

[0040] As a further improvement of the present application, a plurality of embedding grooves are equidistantly arranged on the lower side wall of the movable plate from front to back, and a moving wheel is embedded in each embedding groove, and the rotating shafts on the front and back sides of the moving wheel are respectively rotatably connected to the front and back inner walls of the embedding groove through bearings, and the lower side of the outer wall of the moving wheel is arranged in the same plane as the lower surface of the bottom plate.

[0041] Through the above technical scheme, the movable plate slides through the moving wheel during movement, thereby reducing the wear of the movable plate on the ground.

[0042] Compared with the prior art, the present application has the following beneficial effects:

[0043] 1. Before positioning, the position of the fixing frame can be adjusted according to the length of the hydraulic cylinder, so that hydraulic cylinders of different lengths can be tested.

[0044] 2. The positioning mechanism is arranged at the center of the clamping mechanism, so that the hydraulic cylinder can be preliminarily positioned before clamping, thereby quickly fixing the hydraulic cylinder and simplifying the installation.

[0045] 3. The positioning mechanism is also arranged on the movable plate, so that the movable end of the hydraulic cylinder can be positioned, thereby improving the stability of the hydraulic cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 The figure is a structural schematic diagram of the present application.

[0047] Figure 2 The figure is an exploded view of the present application.

[0048] Figure 3 The figure is Figure 2 The figure is an enlarged view of part A in the middle.

[0049] Figure 4 The figure is an exploded view of the clamping mechanism in the present application.

[0050] Figure 5 The figure is an exploded view of the positioning mechanism and the mounting seat in the present application.

[0051] Figure 6 The figure is an exploded view of the movable plate and the moving wheel in the present application.

[0052] BRIEF DESCRIPTION OF DRAWINGS

[0053] 1. Base plate; 2. Fixed frame; 3. Movable plate; 3-1. Embedded groove; 4. Insert rod; 5. Scale; 6. Connecting spring; 7. Moving mechanism; 7. Moving plate; 7-1. Threaded hole; 7-1-1. Sliding bar; 7-2. Moving screw; 7-3. Moving motor; 7-4. Clamping mechanism; 8. Clamping rod; 8-1. Slider; 8-2. Clamping block; 8-3. Clamping screw; 8-4. Fixed seat; 8-5. Adjusting rod; 8-6. Bevel gear; 8-7. Clamping motor; 8-8. Mounting plate; 9. Oil pipe; 10. Mounting seat; 11. Positioning mechanism; 12. Positioning plate; 12-1. Fixed plate; 12-2. Positioning rod; 12-3. Moving block; 12-4. Positioning spring; 12-5. Positioning wedge; 12-6. Connecting plate; 13. Anti-slip strip; 14. Adjusting screw; 15. Drive motor; 16. Guide rod; 17. Moving wheel; 18. Rectangular groove; 19. Detailed Implementation

[0054] The invention will now be further described with reference to the accompanying drawings. Example 1

[0055] like Figures 1-3 , Figure 6 As shown, this embodiment includes a base plate 1, a fixing frame 2, and a movable plate 3. The fixing frame 2 is located on the right side of the upper surface of the base plate 1, and the movable plate 3 is located on the left side of the base plate 1. It also includes:

[0056] Insert rod 4, there are several insert rods 4, and they are welded and fixed at equal intervals from front to back on one side wall of the movable plate 3 adjacent to the bottom plate 1. The insert rods 4 are movably inserted into the bottom plate 1.

[0057] The scale 5 is welded and fixed to the lower side of the front wall of the movable plate 3 adjacent to the bottom plate 1. The scale 5 is movably inserted into the strip groove on the front wall of the bottom plate 1.

[0058] Connecting spring 6, there are several connecting springs 6, and they are embedded in the insert rod 4 one by one. The two ends of the connecting spring 6 are welded and fixed to the inner wall of the base plate 1 and the inner wall of the insert rod 4 respectively.

[0059] The moving mechanism 7 is disposed on the upper side of the base plate 1 and is connected to the fixed frame 2;

[0060] The clamping mechanism 8 is disposed on one side wall of the fixed frame 2 and suspended above the moving mechanism 7.

[0061] Mounting plate 9, there are two mounting plates 9, which are symmetrically arranged on the upper side of the base plate 1. The mounting plates 9 are connected to the moving mechanism 7.

[0062] Oil pipe 10, there are two oil pipes 10, and they are inserted through the mounting plate 9 in a one-to-one correspondence. One end of the oil pipe 10 is connected to the connector of the hydraulic cylinder to be tested.

[0063] mounting seats 11, which are two in number and are arranged on the fixed frame 2 and the movable plate 3 respectively;

[0064] positioning mechanisms 12, which are two in number and are arranged in the mounting seats 11 one by one, and are arranged adjacent to one side of the center of the bottom plate 1;

[0065] A plurality of embedding grooves 3-1 are equidistantly arranged on the lower side wall of the movable plate 3 from front to back, and a moving wheel 18 is embedded in each of the embedding grooves 3-1. The rotating shafts on the front and back sides of the moving wheel 18 are respectively rotatably connected to the front and back inner walls of the embedding grooves 3-1 through bearings. The lower side of the outer wall of the moving wheel 18 is arranged in the same plane as the lower surface of the bottom plate 1. In the moving process of the movable plate 3, the movable plate 3 slides through the moving wheel 18, so as to reduce the abrasion of the movable plate 3 to the ground. Embodiment 2

[0066] Referring to Figures 1-2 the drawings, on the basis of embodiment 1, the moving mechanism 7 comprises:

[0067] a moving plate 7-1, which is arranged on the upper side of the bottom plate 1. The lower side of the fixed frame 2 is fixed on the upper surface of the moving plate 7-1 through bolts. The mounting plates 9 are arranged on the front and back sides of the upper surface of the moving plate 7-1 respectively. The front and back sides of the lower surface of the moving plate 7-1 are both welded with sliding bars 7-2, which are slidingly arranged in the sliding grooves on the bottom plate 1;

[0068] The side wall of the mounting plate 9 away from the moving plate 7-1 is welded with a connecting plate 13. The lower side of the connecting plate 13 adjacent to the side wall of the moving plate 7-1 abuts against the side wall of the moving plate 7-1. A plurality of threaded holes 7-1-1 are equidistantly arranged on the front and back side walls of the moving plate 7-1. After the fixed bolts pass through the connecting plate 13, the fixed bolts are rotatably connected to the corresponding threaded holes 7-1-1 through threads. According to the position of the connecting head of the tested hydraulic oil cylinder, the fixed bolts are loosened, the connecting plate 13 and the mounting plate 9 are moved to the appropriate position, and then the fixed bolts pass through the connecting plate 13 and are rotatably connected to the corresponding threaded holes 7-1-1;

[0069] moving lead screws 7-3, which are two in number and are symmetrically embedded in the bottom plate 1. The moving lead screws 7-3 pass through and are rotatably connected to the sliding bars 7-2 through threads. The two ends of the moving lead screws 7-3 are rotatably connected to the two side walls of the bottom plate 1 through bearings. The front and back moving lead screws 7-3 are connected through a synchronous wheel transmission assembly;

[0070] A moving motor 7-4 is embedded in the left side of the bottom plate 1, and is connected with an external power source. The output shaft of the moving motor 7-4 is fixedly connected with the left end of the front moving lead screw 7-3 through a bolt. Embodiment 3

[0071] Referring to Figures 1-4 As shown in the embodiment 1, the clamping mechanism 8 comprises:

[0072] A plurality of clamping rods 8-1 are arranged at equal angles on one side of the fixed frame 2 adjacent to the center of the bottom plate 1. The right end of each clamping rod 8-1 is fixedly welded with a sliding block 8-2 which is slidingly arranged in a sliding groove on the side wall of the fixed frame 2.

[0073] A plurality of clamping blocks 8-3 are fixedly welded on the side wall of each clamping rod 8-1 adjacent to the center of the fixed frame 2. An anti-skid strip 14 is fixedly adhered on the side wall of each clamping block 8-3 away from the clamping rod 8-1. When the clamping block 8-3 clamps the hydraulic cylinder, the anti-skid strip 14 increases the friction between the clamping block 8-3 and the hydraulic cylinder.

[0074] A plurality of clamping lead screws 8-4 are embedded in the fixed frame 2 at equal angles. Each clamping lead screw 8-4 is threadingly connected with the sliding block 8-2. The upper and lower ends of each clamping lead screw 8-4 are respectively connected with the upper and lower inner walls of the sliding groove of the fixed frame 2 through bearings.

[0075] A plurality of fixing seats 8-5 are fixedly connected with the side wall of the fixed frame 2 away from the center of the bottom plate 1 through bolts. A plurality of adjusting rods 8-6 are connected with the side wall of each fixing seat 8-5 through bearings. Each adjusting rod 8-6 is arranged corresponding to each clamping lead screw 8-4, and is connected with the clamping lead screw 8-4 through a synchronous wheel transmission assembly.

[0076] A plurality of bevel gears 8-7 are fixedly welded on the adjacent ends of the adjusting rods 8-6. The bevel gears 8-7 are arranged in meshing relationship.

[0077] A clamping motor 8-8 is fixedly connected with the outer bottom wall of the fixing seat 8-5 through a bolt. The clamping motor 8-8 is connected with an external power source. The lower end of each adjusting rod 8-6 is fixedly connected with the clamping motor 8-8 through a bolt. Embodiment 4

[0078] Referring to Figures 1-2 , Figure 5 As shown in the embodiment 1, the positioning mechanism 12 comprises:

[0079] A positioning plate 12-1 is inserted into the mounting seat 11, and the positioning plate 12-1 is exposed on the side of the mounting seat 11 adjacent to the center of the bottom plate 1 after passing through one side of the mounting seat 11;

[0080] A fixing plate 12-2 is welded and fixed on the center of the upper surface of the positioning plate 12-1, and the front and rear sides of the fixing plate 12-2 are provided with positioning rods 12-3, and the top end of the side wall away from the fixing plate 12-2 is welded and fixed with a positioning inclined wedge 12-6;

[0081] A moving block 12-4 is provided, and the moving block 12-4 is one-to-one fixed on the bottom end of the positioning rod 12-3, and the moving block 12-4 is slidably arranged in the sliding groove on the upper surface of the positioning plate 12-1;

[0082] A plurality of positioning springs 12-5 are welded and fixed on the front and rear side walls of the fixing plate 12-2, and the other end of the positioning spring 12-5 is fixed on the positioning rod 12-3. Embodiment 5

[0083] Referring to Figures 1-2 , Figure 5 On the basis of embodiment 1, a rectangular groove 19 is formed on the fixing frame 2 and the movable plate 3, the mounting seat 11 is movably arranged in the rectangular groove 19, one side wall of the mounting seat 11 is welded and fixed with a nut on the adjusting screw rod 15, the lower end of the adjusting screw rod 15 is rotatably connected with the inner wall of one side of the rectangular groove 19 through a bearing, the upper end of the adjusting screw rod 15 is connected with the output shaft of the driving motor 16 after passing through the upper side wall of the rectangular groove 19, the driving motor 16 is connected with an external power supply, the front side wall of the mounting seat 11 is connected with a linear bearing on the guide rod 17, and the upper and lower ends of the guide rod 17 are welded and fixed on the upper and lower inner walls of the rectangular groove 19, respectively.

[0084] In use of the present application, according to the length of the hydraulic cylinder, the moving motor 7-4 is started to drive the moving screw rod 7-3 connected thereto to rotate, the moving screw rod 7-3 drives another moving screw rod 7-3 to rotate through the synchronous wheel transmission assembly, the moving screw rod 7-3 drives the sliding bar 7-2 to move through the thread, the sliding bar 7-2 drives the moving plate 7-1 to move, the moving plate 7-1 drives the fixed frame 2 to move, until the fixed frame 2 moves to the appropriate position, the positioning ring on the hydraulic cylinder is abutted to the top wall of the two positioning inclined wedges 12-6, then the positioning ring is pressed downward, so that the positioning inclined wedges 12-6 drive the positioning rods 12-3 to move to one side of the fixed plate 12-2, until the positioning ring is located at the lower side of the positioning inclined wedges 12-6, at this time the positioning spring 12-5 pushes the positioning rods 12-3 to move to both sides, so as to limit the positioning ring through the positioning inclined wedges 12-6, according to the size of the ring pipe diameter of the positioning ring, the driving motor 16 is started to drive the adjusting screw rod 15 to rotate, the adjusting screw rod 15 drives the mounting seat 11 to move up and down through the screw nut thereon, so that the mounting seat 11 moves up and down in the rectangular groove 19, until the mounting seat 11 moves to the appropriate position, so as to ensure that the hydraulic cylinder is in the center of the clamping mechanism 8, the clamping motor 8-8 is started to drive the adjusting rod 8-6 connected thereto to rotate, the adjusting rod 8-6 drives the bevel gears 8-7 thereon to rotate, the bevel gears 8-7 drive other bevel gears 8-7 to rotate, the bevel gears 8-7 drive the adjusting rods 8-6 thereon to rotate, the adjusting rods 8-6 simultaneously rotate through the synchronous wheel transmission assembly, the clamping screw rod 8-4 drives the sliding blocks 8-2 thereon to move to the center of the fixed frame 2, the sliding blocks 8-2 drive the clamping blocks 8-3 to move through the clamping rods 8-1, until the clamping blocks 8-3 abut on the hydraulic cylinder, so as to limit the hydraulic cylinder, then the positioning ring on the movable end of the hydraulic cylinder is sleeved on the positioning mechanism 12 on the movable plate 3, the connecting head on the hydraulic cylinder is connected with the oil pipes 10 on both sides, the hydraulic cylinder is started, the piston rod of the hydraulic cylinder drives the movable plate 3 to move through the positioning mechanism 12, the movable plate 3 drives the insertion rod 4 to move, the insertion rod 4 stretches the connecting spring 6, so as to avoid the insertion rod 4 from moving out of the bottom plate 1.

[0085] Compared with the prior art, the present embodiment has the following advantages:

[0086] 1. Before positioning, the position of the fixed frame 2 can be adjusted according to the length of the hydraulic cylinder, so that different lengths of hydraulic cylinders can be tested;

[0087] 2. The positioning mechanism 12 is arranged in the center of the clamping mechanism 8, so that the hydraulic cylinder can be preliminarily positioned before clamping, so that the hydraulic cylinder can be quickly fixed, and the installation is simple and fast;

[0088] 3. The positioning mechanism 12 is also arranged on the movable plate 3, so that the movable end of the hydraulic cylinder can be positioned, and the stability of the hydraulic cylinder is improved.

[0089] The above is only used to illustrate the technical solutions of the present application, but not limit the present application. Other modifications or equivalent replacements to the technical solutions of the present application made by those skilled in the art should be covered in the scope of claims of the present application, as long as they do not depart from the spirit and scope of the present application.

Claims

1. A hydraulic cylinder stroke testing machine that is easy to install, comprising a base plate (1), a fixed frame (2), and a movable plate (3), wherein the fixed frame (2) is provided on one side of the upper surface of the base plate (1), and the movable plate (3) is provided on one side of the base plate (1); characterized in that, It also includes: Insert rod (4), there are several insert rods (4), and they are fixed at equal intervals from front to back on one side wall of the movable plate (3) adjacent to the bottom plate (1), and the insert rods (4) are movably inserted into the bottom plate (1); The scale (5) is fixed below the front side of the movable plate (3) adjacent to the bottom plate (1), and the scale (5) is movably inserted into the strip groove on the front side wall of the bottom plate (1). Connecting springs (6) There are several connecting springs (6), and they are embedded in the insert rod (4) one by one. The two ends of the connecting springs (6) are fixedly connected to the inner wall of the base plate (1) and the inner wall of the insert rod (4) respectively. A moving mechanism (7) is disposed on the upper side of the base plate (1) and connected to the fixed frame (2); the moving mechanism (7) includes: The movable plate (7-1) is located on the upper side of the base plate (1), and the lower side of the fixing frame (2) is fixed on the upper surface of the movable plate (7-1). The mounting plates (9) are respectively located on the front and rear sides of the upper surface of the movable plate (7-1). Sliding strips (7-2) are fixed on the front and rear sides of the lower surface of the movable plate (7-1). The sliding strips (7-2) are slidably located in the grooves on the base plate (1). The movable lead screw (7-3) consists of two screws, which are symmetrically embedded in the base plate (1). The movable lead screw (7-3) passes through and is inserted into the sliding bar (7-2) by threaded connection. The two ends of the movable lead screw (7-3) are respectively screwed to the two side walls of the base plate (1) by bearings. The two movable lead screws (7-3) are connected to each other by a synchronous wheel transmission assembly. The mobile motor (7-4) is embedded in one side of the base plate (1). The mobile motor (7-4) is connected to an external power source. The output shaft of the mobile motor (7-4) is fixedly connected to one end of one of the moving lead screws (7-3). A clamping mechanism (8) is disposed on one side wall of the fixed frame (2) and suspended above the moving mechanism (7); the clamping mechanism (8) comprises: Clamping rod (8-1), there are several clamping rods (8-1), and they are arranged at equal angles on one side of the fixed frame (2) adjacent to the center of the base plate (1). One end of the clamping rod (8-1) is fixed with a slider (8-2), which is slidably arranged in a groove on the side wall of the fixed frame (2). Clamping blocks (8-3), there are several clamping blocks (8-3), and they are fixed one by one on the side wall of the clamping rod (8-1) adjacent to the center of the fixing frame (2); Clamping screws (8-4) are several in number and are equally embedded in the fixed frame (2). The clamping screws (8-4) are screwed into the slider (8-2) one by one. The upper and lower ends of the clamping screws (8-4) are screwed onto the upper and lower inner walls of the slide groove of the fixed frame (2) through bearings respectively. The fixed seat (8-5) is fixed on the side wall of the fixed frame (2) away from the center of the base plate (1). Several adjusting rods (8-6) are screwed onto the peripheral wall of the fixed seat (8-5) through bearings. The adjusting rods (8-6) are arranged one-to-one with the clamping screws (8-4), and the adjusting rods (8-6) and the clamping screws (8-4) are connected one-to-one through the synchronous wheel transmission assembly. The bevel gears (8-7) are multiple in number and are fixed one-to-one on the adjacent ends of several adjusting rods (8-6). The multiple bevel gears (8-7) are meshed with each other. The clamping motor (8-8) is fixed on the outer bottom wall of the fixed base (8-5), the clamping motor (8-8) is connected to an external power source, and the clamping motor (8-8) is fixedly connected to the lower end of the adjusting rod (8-6) on the lower side. Mounting plate (9), there are two mounting plates (9), and they are symmetrically arranged on the upper side of the base plate (1). The mounting plate (9) is connected to the moving mechanism (7). Oil pipe (10), there are two oil pipes (10), and they are inserted through the mounting plate (9) one by one. One end of the oil pipe (10) is connected to the connector of the hydraulic cylinder to be tested. Mounting base (11), there are two mounting bases (11), and they are respectively mounted on the fixed frame (2) and the movable plate (3); Positioning mechanism (12), there are two positioning mechanisms (12), and they are respectively arranged in the mounting base (11). The positioning mechanism (12) is arranged on one side adjacent to the center of the base plate (1); the positioning mechanism (12) includes: Positioning plate (12-1), the positioning plate (12-1) is inserted into the mounting base (11), and after the positioning plate (12-1) passes through one side of the mounting base (11), it is exposed on the side of the mounting base (11) adjacent to the center of the base plate (1); The fixing plate (12-2) is fixed to the center of the upper surface of the positioning plate (12-1). The fixing plate (12-2) is provided with positioning rods (12-3) on both the front and rear sides. The top of the positioning rods (12-3) away from the side wall of the fixing plate (12-2) is provided with positioning wedges (12-6). There are two movable blocks (12-4), and they are fixed one-to-one on the bottom end of the positioning rod (12-3). The movable blocks (12-4) are slidably arranged in the groove on the upper surface of the positioning plate (12-1). Positioning springs (12-5) are of several types and are fixed equally and at equal intervals on the front and rear side walls of the fixing plate (12-2). The other end of the positioning springs (12-5) is fixed on the positioning rod (12-3).

2. The hydraulic cylinder stroke testing machine that is easy to install according to claim 1, characterized in that: The mounting plate (9) is fixed with a connecting plate (13) on the side wall away from the moving plate (7-1). The lower side of the connecting plate (13) adjacent to the side wall of the moving plate (7-1) abuts against the side wall of the moving plate (7-1). Several threaded holes (7-1-1) are provided at equal intervals on the front and rear side walls of the moving plate (7-1). After the fixing bolt passes through the connecting plate (13), it is screwed into the corresponding threaded hole (7-1-1) through the thread.

3. The hydraulic cylinder stroke testing machine that is easy to install according to claim 1, characterized in that: Anti-slip strips (14) are fixed on the side wall of the clamping block (8-3) away from the clamping rod (8-1).

4. The hydraulic cylinder stroke testing machine that is easy to install according to claim 1, characterized in that: The fixed frame (2) and the movable plate (3) are both provided with rectangular grooves (19). The mounting base (11) is movably set in the rectangular groove (19). One side wall of the mounting base (11) is fixedly connected to the nut on the adjusting screw (15). The lower end of the adjusting screw (15) is screwed to the inner wall of one side of the rectangular groove (19) through a bearing. After the upper end of the adjusting screw (15) passes through the upper side wall of the rectangular groove (19), it is connected to the output shaft of the drive motor (16). The drive motor (16) is connected to an external power source. The other side wall of the mounting base (11) is connected to the linear bearing on the guide rod (17). The upper and lower ends of the guide rod (17) are fixedly connected to the upper and lower inner walls of the rectangular groove (19) respectively.

5. A hydraulic cylinder stroke testing machine that is easy to install according to claim 1, characterized in that: The lower side wall of the movable plate (3) is provided with several embedded grooves (3-1) at equal intervals from front to back. Each embedded groove (3-1) is equipped with a movable wheel (18). The rotating shafts on the front and rear sides of the movable wheel (18) are respectively screwed to the front and rear inner walls of the embedded groove (3-1) through bearings. The lower side of the outer wall of the movable wheel (18) is set in the same plane as the lower surface of the base plate (1).

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