Quick change structure and screw pressure test device

Abstract

The utility model relates to a quick-change structure and a screw pressure test device, the quick-change structure comprises a fixing block, a pressing plate, a bolt and a jackscrew, the fixing block is provided with a locking bolt assembly used for fixing the fixing block, the pressing plate is provided with a strip-shaped through hole used for being in sliding fit with the bolt and a first connecting hole used for being connected with the jackscrew, and the pressing plate is provided with a second connecting hole used for being connected with the jackscrew. The fixing block is provided with a second connecting hole used for being in threaded connection with the bolt and a strip-shaped groove used for being fixedly matched with the jackscrew, the bolt penetrates through the strip-shaped through hole of the pressing plate to be connected with the second connecting hole of the fixing block, and the jackscrew penetrates through the first connecting hole of the pressing plate to abut against the strip-shaped groove of the fixing block. The quick-change structure is simple in structure and quick and convenient to install, and the fixing efficiency of the balance cylinder is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve pressure testing devices, in particular to a quick-change structure and a screw pressure testing device. Background Art

[0002] The screw pressure test device is a self-locking structure, so it cannot provide continuous top force and needs to be used with a balance cylinder. As the valve diameter increases, the width of the equipment and the weight of the balance cylinder will increase, which in turn increases the difficulty of tooling changeover.

[0003] In the prior art, the balancing cylinder is usually fixed to the mobile archway and the first fixed archway by multiple bolts. When changing the archway, it is necessary to manually align the connection holes and tighten a circle of bolts, which greatly increases the labor and time costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a quick-change structure, which has a simple structure, is quick and convenient to install, and greatly improves the fixing efficiency of the balancing cylinder.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a quick-change structure, including a fixing block, a pressing plate, a bolt and a top screw, a locking bolt assembly for fixing the fixing block is provided on the fixing block, the pressing plate is provided with a strip through hole for sliding cooperation with the bolt and a first connecting hole for connecting with the top screw, the fixing block is provided with a second connecting hole for threaded connection with the bolt and a strip groove for fixed cooperation with the top screw, the strip groove is located on one side of the second connecting hole, a gasket is provided between the top of the pressing plate and the bolt, the bolt passes through the gasket and the strip through hole of the pressing plate and is connected with the second connecting hole of the fixing block, and the top screw passes through the first connecting hole of the pressing plate and abuts against the strip groove of the fixing block.

[0006] The above-mentioned quick-change structure fixes the fixed block on the mobile archway or the first fixed archway through the locking bolt assembly, and the bolt passes through the strip-shaped through hole of the pressure plate and is connected to the second connecting hole of the fixed block. After the connection, the pressure plate can move forward and backward along the bolt and can rotate around the bolt. After the clamping position of the pressure plate and the balancing cylinder is determined, the top screw passes through the first connecting hole of the pressure plate and is fixedly connected to the strip-shaped groove of the fixed block, pressing one end of the pressure plate on the fixed block, so that the other end of the pressure plate is pressed on the balancing cylinder, thereby locking the balancing cylinder. When the balancing cylinder needs to be changed, it only needs to adjust the top screw, loosen the pressure plate and the fixed block, and the balancing cylinder can be changed. The quick-change structure has a simple structure, is quick and convenient to install, and greatly improves the installation efficiency of the balancing cylinder.

[0007] A screw pressure testing device comprises a base, on which a first fixed arch, a second fixed arch and a driving mechanism are arranged, a guide rod is arranged between the first fixed arch and the second fixed arch, a mobile arch is slidably arranged on the guide rod, a driving end of the driving mechanism passes through the second fixed arch and is fixedly connected with the mobile arch, a balancing cylinder and a plurality of quick-change structures are respectively arranged on the first fixed arch and the mobile arch, and the quick-change structure is used to clamp and fix the balancing cylinder.

[0008] In one of the embodiments, the balance cylinder of the screw pressure testing device is provided with a plurality of connection blocks spaced apart along the circumferential direction, and the connection blocks are provided with slots for fixedly cooperating with the quick-change structure.

[0009] In one embodiment, the driving mechanism of the screw pressure testing device includes a screw-nut pair mechanism, a motor, a first gear and a second gear. The screw-nut pair mechanism includes a screw and a nut. The nut is sleeved on the screw and rotatably connected to the second fixed arch. One end of the screw is connected to the movable arch. The driving end of the motor is connected to the first gear. The second gear is sleeved on the screw and fixedly connected to the nut. The first gear is meshed with the second gear.

[0010] In one of the embodiments, two bracket assemblies for supporting the valve are provided on the base of the screw pressure testing device. The bracket assembly includes a bracket and a roller seat with a brake. The bracket is installed on the top of the roller seat, and the roller seat is slidably matched with the base.

[0011] The beneficial effects of this application are:

[0012] The present application provides a quick-change structure and a screw pressure test device, which realizes the rapid fixing and disassembly of the balancing cylinder by installing multiple quick-change structures on the mobile archway and the first fixed archway. The screw pressure test device greatly improves the installation efficiency of the balancing cylinder and reduces labor costs and time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of a quick-change structure according to an embodiment of the present application;

[0014] Figure 2 An exploded view of a quick-change structure according to an embodiment of the present application;

[0015] Figure 3 A schematic diagram of a screw pressure testing device according to an embodiment of the present application;

[0016] Figure 4 A schematic diagram of a balancing cylinder and a quick-change structure of a screw pressure testing device according to an embodiment of the present application;

[0017] Figure 5 A schematic diagram of a screw nut pair mechanism and a movable archway of a screw pressure testing device according to an embodiment of the present application;

[0018] Figure 6 A schematic diagram of a bracket assembly of a screw pressure testing device according to an embodiment of the present application;

[0019] in:

[0020] 1. Quick-change structure; 11. Fixed block; 12. Press plate; 13. Bolt; 14. Top screw; 15. Locking bolt assembly; 16. Gasket; 121. Strip through hole; 122. First connecting hole; 111. Second connecting hole; 112. Strip groove; 2. Base; 3. First fixed arch; 4. Second fixed arch; 5. Driving mechanism; 6. Guide rod; 7. Moving arch; 8. Balance cylinder; 9. Bracket assembly; 81. Connecting block; 811. Slot; 51. Screw-nut sub-mechanism; 52. Motor; 53. First gear; 54. Second gear; 511. Screw; 512. Nut; 91. Bracket; 92. Roller seat. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0022] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a quick-change structure, including a fixed block 11, a pressure plate 12, a bolt 13 and a top screw 14, the fixed block 11 is provided with a locking bolt assembly 15 for fixing the fixed block 11, the pressure plate 12 is provided with a strip through hole 121 for slidingly matching with the bolt 13 and a first connecting hole 122 for connecting with the top screw 14, the fixed block 11 is provided with a second connecting hole 111 for threaded connection with the bolt 13 and a strip groove 112 for fixedly matching with the top screw 14, the strip groove 112 is located on one side of the second connecting hole 111, a gasket 16 is provided between the top of the pressure plate 12 and the bolt 13, the bolt 13 passes through the gasket 16 and the strip through hole 121 of the pressure plate 12 and is connected with the second connecting hole 111 of the fixed block 11, and the top screw 14 passes through the first connecting hole 122 of the pressure plate 12 and abuts against the strip groove 112 of the fixed block 11.

[0023] Specifically, the fixing block 11 is fixed to the movable archway 7 or the first fixed archway 3 by means of the locking bolt assembly 15, the bolt 13 passes through the bar-shaped through hole 121 of the pressing plate 12 and is connected to the second connecting hole 111 of the fixing block 11, the pressing plate 12 after connection can move forward and backward along the bolt 13 and can rotate around the bolt 13, after the pressing plate 12 is adjusted to a position where the balancing cylinder 8 can be pressed, the first connecting hole 122 of the pressing plate 12 is located on the bar-shaped groove 112, the top screw 14 passes through the first connecting hole 122 of the pressing plate 12 and is fixedly connected to the bar-shaped groove 112 of the fixing block 11, one end of the pressing plate 12 is pressed against the fixing block 11, and the other end of the pressing plate 12 is pressed against the balancing cylinder 8, thereby achieving locking of the balancing cylinder 8. When the balancing cylinder 8 needs to be changed, it is only necessary to adjust the top screw 14, loosen the locking of the pressing plate 12 on the balancing cylinder 8, and rotate or move the position of the pressing plate 12 to change the balancing cylinder 8. The locking bolt assembly 15 includes four symmetrically arranged bolts 13 .

[0024] In the above structure, the pressing and loosening of the pressure plate 12 is achieved by adjusting the top screw 14. The quick-change structure is simple in structure, quick and convenient to install, and greatly improves the installation efficiency of the balance cylinder 8.

[0025] like Figure 3 As shown, an embodiment of the present application provides a screw pressure testing device, including a base 2, on which a first fixed arch 3, a second fixed arch 4 and a driving mechanism 5 are arranged, a guide rod 6 is arranged between the first fixed arch 3 and the second fixed arch 4, a movable arch 7 is slidably arranged on the guide rod 6, a driving end of the driving mechanism 5 passes through the second fixed arch 4 and is fixedly connected with the movable arch 7, a balancing cylinder 8 and a plurality of quick-change structures 1 are respectively arranged relatively on the first fixed arch 3 and the movable arch 7, and the quick-change structure 1 is used to clamp and fix the balancing cylinder 8.

[0026] Specifically, two quick-change structures 1 are respectively installed on the first fixed arch 3 and the mobile arch 7, and the two quick-change structures 1 are located at the same horizontal position. The two balancing cylinders 8 are pre-positioned on the first fixed arch 3 and the mobile arch 7, and then the two ends of the balancing cylinders 8 are pressed and fixed by the two quick-change structures 1, so that the two balancing cylinders 8 are respectively pressed and fixed on the first fixed arch 3 and the mobile arch 7, and the two balancing cylinders 8 are located opposite to each other. The driving mechanism 5 drives the mobile arch 7 to drive the balancing cylinder 8 to fix the valve, and the valve is pressure tested after being fixed.

[0027] The quick-change structure 1 is used to realize quick fixing and quick disassembly of the balancing cylinder 8 , thereby improving the installation efficiency of the balancing cylinder 8 and thus improving the use efficiency of the equipment.

[0028] like Figure 4As shown, in one embodiment, the balance cylinder 8 of the screw pressure test device is provided with a plurality of connection blocks 81 at intervals along the circumferential direction, and the connection block 81 is provided with a slot 811 for fixedly matching with the quick-change structure 1. Four connection blocks 81 are provided at intervals along the circumferential direction on the end surface of the balance cylinder 8, and the connection block 81 is provided with a slot 811 fixedly matching with the pressure plate 12. The pressure plate 12 can extend into the slot 811 of the connection block 81, and then the pressure plate 12 is pressed by adjusting the top screw 14. This arrangement strengthens the fixing and pressing effect of the pressure plate 12 and the balance cylinder 8.

[0029] like Figure 3 , Figure 5 As shown, in one embodiment, the driving mechanism 5 of the screw pressure test device includes a screw nut sub-mechanism 51, a motor 52, a first gear 53 and a second gear 54. The screw nut sub-mechanism 51 includes a screw 511 and a nut 512. The nut 512 is sleeved on the screw 511 and is rotatably connected to the second fixed arch 4. One end of the screw 511 is connected to the mobile arch 7. The driving end of the motor 52 is connected to the first gear 53. The second gear 54 is sleeved on the screw 511 and is fixedly connected to the nut 512. The first gear 53 is meshed with the second gear 54. The motor 52 drives the first gear 53 to rotate, the first gear 53 drives the second gear 54 and the nut 512 to rotate, the nut 512 drives the screw 511 to move forward and backward, the screw 511 drives the mobile arch 7 to move, and the mobile arch 7 drives the balance cylinder 8 to move. This setting facilitates driving the balance cylinder 8 to move to clamp and release the valve.

[0030] like Figure 6 As shown, in one embodiment, two bracket assemblies 9 for supporting the valve are arranged on the base 2 of the screw pressure test device, and the bracket assembly 9 includes a bracket 91 and a roller seat 92 with a brake, and the bracket 91 is installed on the top of the roller seat 92, and the roller seat 92 is slidably matched with the base 2. The distance between the roller seats 92 can be adjusted according to the specifications of the valve, so that the bracket 91 supports the valve. This arrangement facilitates the adjustment of the position of the bracket assembly 9 according to the size of the valve.

[0031] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A quick-change structure, characterized in that: The invention comprises a fixing block (11), a pressing plate (12), a bolt (13) and a top screw (14); the fixing block (11) is provided with a locking bolt assembly (15) for fixing the fixing block (11); the pressing plate (12) is provided with a strip-shaped through hole (121) for slidingly cooperating with the bolt (13) and a first connecting hole (122) for connecting with the top screw (14); the fixing block (11) is provided with a second connecting hole (111) for threaded connection with the bolt (13) and a second connecting hole (112) for connecting with the top screw (14); 4) a fixedly matched strip groove (112), the strip groove (112) being located on one side of the second connecting hole (111), a gasket (16) being arranged between the top of the pressing plate (12) and the bolt (13), the bolt (13) passing through the gasket (16), the strip through hole (121) of the pressing plate (12) and being connected with the second connecting hole (111) of the fixing block (11), and the top screw (14) passing through the first connecting hole (122) of the pressing plate (12) and being abutted against the strip groove (112) of the fixing block (11).

2. A screw pressure testing device, comprising the quick-change structure according to claim 1, characterized in that: The invention comprises a base (2), a first fixed archway (3), a second fixed archway (4) and a driving mechanism (5) are arranged on the base (2), a guide rod (6) is arranged between the first fixed archway (3) and the second fixed archway (4), a movable archway (7) is slidably arranged on the guide rod (6), a driving end of the driving mechanism (5) passes through the second fixed archway (4) and is fixedly connected to the movable archway (7), a balancing cylinder (8) and a plurality of quick-change structures (1) are respectively arranged on the first fixed archway (3) and the movable archway (7), and the quick-change structure (1) is used to clamp and fix the balancing cylinder (8).

3. The screw pressure testing device according to claim 2, characterized in that: The balancing cylinder (8) is provided with a plurality of connection blocks (81) spaced apart along the circumferential direction, and the connection blocks (81) are provided with a clamping groove (811) for fixedly matching with the quick-change structure (1).

4. The screw pressure testing device according to claim 2, characterized in that: The driving mechanism (5) comprises a screw-nut pair mechanism (51), a motor (52), a first gear (53) and a second gear (54); the screw-nut pair mechanism (51) comprises a screw rod (511) and a nut (512); the nut (512) is sleeved on the screw rod (511) and is rotationally connected to the second fixed archway (4); one end of the screw rod (511) is connected to the movable archway (7); the driving end of the motor (52) is connected to the first gear (53); the second gear (54) is sleeved on the screw rod (511) and is fixedly connected to the nut (512); and the first gear (53) is meshed with the second gear (54).

5. The screw pressure testing device according to claim 2, characterized in that: The base (2) is provided with two bracket assemblies (9) for supporting the valve, the bracket assembly (9) comprising a bracket (91) and a roller seat (92) with a brake, the bracket (91) being mounted on the top of the roller seat (92), and the roller seat (92) being slidably matched with the base (2).

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