Parallel double-gate-plate pressing tool
By designing a parallel double-gate clamping fixture with a scissor-like clamping structure, the problem of traditional fixtures being unusable during the initial assembly of valves is solved, providing a fast and convenient disassembly and assembly solution suitable for various valve types.
Patent Information
- Application Number
- CN202422850746.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-21
AI Technical Summary
In some cases, traditional tooling cannot be used during the initial assembly of existing parallel double gate valves, especially when the valves welded to the pipeline cannot be disassembled during on-site maintenance at the customer's site, making disassembly and assembly operations difficult.
A parallel double gate clamping fixture including a clamping structure and a pressure block was designed. The clamping structure is scissor-shaped. The clamping mechanism drives the pressure block to clamp the gate. After the component is installed into the valve body, the fixture can be removed from the channel by releasing the pressure block, which simplifies the disassembly and assembly process.
It enables quick and convenient assembly and disassembly of valve components in confined spaces and at high altitudes, is suitable for valves of different weight ratings, is easy to operate, provides sealing surface protection, and has wide applicability.
Smart Images
Figure CN223545141U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of valve installation technology, specifically to a parallel double gate clamping fixture. Background Technology
[0002] A parallel double-gate valve is a type of valve that achieves a seal by having two relatively parallel gates fit against a parallel valve seat. The initial sealing pressure is provided by the spring force on the back of the two gates. During gate assembly, auxiliary tooling is needed to overcome the spring force, reducing the distance between the sealing surfaces of the two gates so that they can enter the valve seat opening position. Currently, the main process involves drilling auxiliary holes in the gate frame, using pressure blocks to tighten the gate's process groove, and then loosening and removing the tooling bolts from the channel after the gate has entered the valve seat.
[0003] The above-mentioned tooling is widely used in the initial assembly of valves, but it cannot be used in some situations. For example, when valves need to be disassembled during on-site maintenance at the customer's site, or when the welded end of the valve is welded to the pipeline and cannot be removed, or when there are other conditions that do not allow for valve body disassembly, the tooling cannot be removed through the channel and can only be disassembled from the open cavity, which is very troublesome. Utility Model Content
[0004] Therefore, the technical problem to be solved by this utility model is to overcome the shortcomings of existing tooling, which is widely used in the initial assembly of valves but cannot be used in certain situations, such as when valves need to be disassembled during customer site maintenance, when the welded end valve is welded to the pipeline and cannot be removed, or when there are other conditions for disassembling the valve body, and the tooling cannot be removed through the channel, and the disassembly and assembly can only be carried out from the open cavity position, which is very troublesome.
[0005] Therefore, this utility model provides a parallel double-gate clamping fixture, comprising:
[0006] A clamping structure, the clamping structure including at least one clamping mechanism, the clamping mechanism being provided with two clamping ends;
[0007] Two pressure blocks are provided, and the two pressure blocks are respectively connected to the two clamping ends;
[0008] The clamping mechanism is configured to move the two pressure blocks closer together to clamp the parallel double gate plates.
[0009] Optionally, two clamping mechanisms are provided, and the two clamping mechanisms are arranged opposite to each other;
[0010] The two ends of the pressure block are respectively disposed on the two clamping ends of the two clamping structures located on the same side.
[0011] Optionally, the aforementioned pressure block is rotatably connected to the clamping end.
[0012] Optionally, the clamping mechanism described above includes: a first clamping arm and a second clamping arm, both of which are provided with pivot portions. The first clamping arm and the second clamping arm are connected to each other in a scissor-type cross structure by passing through the two pivot portions via a shaft.
[0013] Optionally, the first clamping arm described above includes a first clamping portion and a first clamping portion, wherein the first clamping portion is disposed between the pivot portion and the clamping end, and the first clamping portion is disposed on the side of the pivot portion away from the clamping end.
[0014] Optionally, the second clamping arm described above includes a second clamping portion and a second clamping portion, wherein the second clamping portion is disposed between the pivot portion and the clamping end, and the second clamping portion is disposed on the side of the pivot portion away from the clamping end.
[0015] Optionally, the above-mentioned parallel double gate clamping fixture further includes a fixing structure, which is disposed on the first clamping part and the second clamping part.
[0016] Optionally, the above-mentioned fixing structure includes: a guide member and a sliding member; the guide member and the sliding member are respectively disposed on the first clamping part and the second clamping part;
[0017] And / or the guide member and the sliding member are respectively disposed on the second clamping part and the first clamping part;
[0018] The fixing structure further includes a connector, which passes through the sliding member and the guide member in sequence to fix the clamping mechanism.
[0019] Optionally, the aforementioned connector is threadedly connected to the sliding member and the guide member.
[0020] Optionally, the diameter of the insertion hole on the aforementioned slider is larger than the outer diameter of the insertion member.
[0021] The technical solution provided by this utility model has the following advantages:
[0022] 1. The parallel double gate clamping fixture provided by this utility model includes: a clamping structure and pressure blocks. The clamping structure includes at least one clamping mechanism. The clamping structure is scissor-shaped and has two clamping ends. There are two pressure blocks, which are respectively connected to the two clamping ends. The clamping mechanism has a clamping state in which it drives the two pressure blocks to move closer to each other to clamp the parallel double gate.
[0023] When assembling parallel double gates, stack the gate, gate frame, spring, support plate, valve stem, and other parts in sequence. After assembling the fixture, pass it through the valve stem. Two clamping mechanisms move the pressure blocks on both sides inward until they act on the center of the gate, clamping and fixing the components together. Insert the components and clamping fixture together into the valve body cavity. After the lower opening of the gate is fully inserted into the valve seat opening, the clamping mechanisms move the two pressure blocks to the sides, releasing the components. The clamping fixture can then be easily removed by vertically lifting it upward from the channel. Attached Figure Description
[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of the overall structure of the parallel double-gate clamping fixture provided in this utility model.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1 – Clamping mechanism; 11 – First clamping arm; 111 – First clamping part; 112 – First clamping part; 12 – Second clamping arm; 121 – Second clamping part; 122 – Second clamping part;
[0028] 2 - Pressed block;
[0029] 3 - Fixed structure; 31 - Guide component; 32 - Sliding component; 33 - Connector. Detailed Implementation
[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0034] Example
[0035] This embodiment provides a parallel double-gate clamping fixture, such as Figure 1 As shown, it includes: a clamping structure and a pressure block 2.
[0036] The clamping structure includes at least one clamping mechanism 1. In this embodiment, two clamping mechanisms 1 are provided, arranged opposite each other with a gap between them. Each clamping mechanism 1 is scissor-shaped, with two clamping ends at its lower ends. The two clamping ends of one clamping mechanism 1 correspond one-to-one with the two clamping ends of the other clamping mechanism 1. A pressure block 2 is installed between the two clamping ends on the same side of different clamping mechanisms 1, and a total of two pressure blocks 2 are provided.
[0037] When assembling parallel double gates, the gate, gate frame, spring, support plate, valve stem, and other parts are stacked in sequence. After assembling the fixture, it is passed through the valve stem. The two clamping mechanisms 1 drive the pressure blocks 2 on both sides to move inward until they act on the center of the gate, clamping and fixing the components together. The components and the clamping fixture are then inserted into the valve body cavity. After the lower opening of the gate is fully inserted into the valve seat opening, the clamping mechanism 1 drives the two pressure blocks 2 to move to both sides, releasing the components. The clamping fixture can then be lifted vertically upward from the channel to remove it, which is very convenient.
[0038] Specifically, with Figure 1 The structure of the clamping mechanism 1, which is located slightly forward, is illustrated using this example. The clamping mechanism 1 includes a first clamping arm 11 and a second clamping arm 12, as shown below. Figure 1 As shown, the upper half of the first clamping arm 11 is a straight first clamping portion 112, and the lower half is an arc-shaped first clamping portion 111. The transition connection between the first clamping portion 111 and the first clamping portion 112 is a pivot portion, and the lower end of the first clamping arm 11 is the clamping end. That is, for the first clamping arm 11, the first clamping portion 111 is located between the pivot portion and the clamping end on the first clamping arm 11, and the first clamping portion 112 is located on the side of the pivot portion of the first clamping portion 111 away from the clamping end. Similarly, the upper half of the second clamping arm 12 is a straight second clamping portion 122, and the lower half is an arc-shaped second clamping portion 121. The transition connection between the second clamping portion 121 and the second clamping portion 122 is a pivot portion, and the lower end of the second clamping arm 12 is the clamping end. Specifically, for the second clamping arm 12, the second clamping part 121 is located between the pivot part and the clamping end on the second clamping arm 12, and the second clamping part 122 is located on the side of the pivot part of the second clamping part 121 away from the clamping end. The first clamping arm 11 and the second clamping arm 12 are connected in a scissor-type cross structure by providing a shaft through the two pivot parts.
[0039] like Figure 1 As shown, a fixing structure 3 is provided at the top of the first clamping part 112 and the second clamping part 122 away from the pivot part. The fixing structure 3 includes a guide 31 and a sliding part 32. The guide 31 is a square block with a threaded hole, and the sliding part 32 can be a nut. For the two clamping mechanisms 1, there are three possible arrangements of the guide 31 and the sliding part 32: the first is that the guide 31 and the sliding part 32 can be respectively arranged on the first clamping part 112 and the second clamping part 122; the second is that the guide 31 and the sliding part 32 are respectively arranged on the second clamping part 122 and the first clamping part 112; the third is that the guide 31 and the sliding part 32 on one of the clamping mechanisms 1 are respectively arranged on the first clamping part 112 and the second clamping part 122, and the guide 31 and the sliding part 32 on the other clamping mechanism 1 are respectively arranged on the second clamping part 122 and the first clamping part 112. In this embodiment, in order to ensure that the installation directions of the two plug-in parts 33 are the same, such as Figure 1 As shown, the guide 31 and the sliding member 32 on the front clamping mechanism 1 are respectively fixed to the top ends of the second clamping part 122 and the first clamping part 112, and the guide 31 and the sliding member 32 on the rear clamping mechanism 1 are respectively fixed to the top ends of the first clamping part 112 and the second clamping part 122.
[0040] The specific steps for clamping or releasing the parallel double gate are as follows: Stack the gate, gate frame, spring, support plate, valve stem, and other parts in sequence. After assembling the fixture, pass it through the valve stem. Simultaneously press the two first clamping parts 112 and two second clamping parts 122 inward. Through the lever principle, move the two first clamping parts 111 and two second clamping parts 121 inward, thereby moving the pressure block 2 inward. The two pressure blocks 2 act on the center position of the gate. The pressure block 2 is rotatably connected to the clamping end, ensuring that the inner surface of the pressure block 2 can completely adhere to the gate. Then, insert the connector 33 through the sliding part 32 and the guide part 31 in sequence, and use an Allen wrench to symmetrically rotate the hexagonal nut to gradually bring the guide part 31 and the sliding part 32 closer together, thus fixing the entire clamping structure. The clamping is complete. When loosening is required, use an Allen wrench to turn the hex nut in the opposite direction to unlock the first clamping part 112 and the second clamping part 122, separating the first clamping part 112 and the second clamping part 122 to both sides. This allows the first clamping part 111 and the second clamping part 121 to open to both sides, causing the pressure block 2 to move outward and loosening the parallel double gate. This tooling is easy to operate and highly stable. The first clamping part 111 and the second clamping part 121 extend into the valve cavity to apply pressure to the first clamping part 112 and the second clamping part 122. By shifting the point of application to the larger space outside the valve body, force input can be achieved simply by inputting torque through the threaded connector 33. It is compatible with valves of the same diameter but different pressure ratings, and can be used with both conventional valves and pressure-sealed valves.
[0041] In this embodiment, as Figure 1 As shown, the pressure block 2 is eccentrically rotated on the clamping end, allowing for free rotation to select the clamping surface. This solves the problem of limited internal space in the valve body and restricted tooling volume, preventing direct contact between the tooling and the gate sealing surface, thus protecting the sealing surface. Furthermore, when the clamping tooling is removed, the pressure block 2 rotates downwards under its own weight after being released, reducing the space occupied and facilitating the removal of the entire tooling. Simultaneously, the entire clamping tooling has a simple structure and small size, allowing it to perform well in high-altitude and confined space operations due to its small size, light weight, and simple operation, enabling quick assembly and disassembly and easy portability.
[0042] In this embodiment, the diameter of the insertion hole on the slider 32 is larger than the outer diameter of the insertion member 33, so that the insertion member 33 has a certain movable space in the inner hole of the slider 32, so that it can be inserted into the slider 32 in advance, which facilitates subsequent operations and avoids jamming.
[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A parallel double-gate clamping fixture, characterized in that, include: A clamping structure, the clamping structure including at least one clamping mechanism (1), the clamping mechanism (1) being provided with two clamping ends; Two pressure blocks (2) are provided, and the two pressure blocks (2) are respectively connected to the two clamping ends; The clamping mechanism (1) has a clamping state in which it drives the two pressure blocks (2) to move closer to each other to clamp the parallel double gate.
2. The parallel double-gate clamping fixture according to claim 1, characterized in that, There are two clamping mechanisms (1), and the two clamping mechanisms (1) are arranged opposite to each other; The two ends of the pressure block (2) are respectively set on the two clamping ends of the two clamping structures located on the same side.
3. The parallel double-gate clamping fixture according to claim 2, characterized in that, The pressure block (2) is rotatably connected to the clamping end.
4. The parallel double-gate clamping fixture according to claim 3, characterized in that, The clamping mechanism (1) includes a first clamping arm (11) and a second clamping arm (12). Both the first clamping arm (11) and the second clamping arm (12) are provided with pivot parts. The first clamping arm (11) and the second clamping arm (12) are connected to each other in a scissor-type cross structure by passing through the two pivot parts through a shaft.
5. The parallel double-gate clamping fixture according to claim 4, characterized in that, The first clamping arm (11) includes a first clamping part (111) and a first clamping part (112). The first clamping part (111) is disposed between the pivot part and the clamping end, and the first clamping part (112) is disposed on the side of the pivot part away from the clamping end.
6. The parallel double-gate clamping fixture according to claim 5, characterized in that, The second clamping arm (12) includes a second clamping part (121) and a second clamping part (122). The second clamping part (121) is disposed between the pivot part and the clamping end, and the second clamping part (122) is disposed on the side of the pivot part away from the clamping end.
7. The parallel double-gate clamping fixture according to claim 6, characterized in that, The parallel double gate clamping fixture also includes a fixing structure (3), which is disposed on the first clamping part (112) and the second clamping part (122).
8. The parallel double-gate clamping fixture according to claim 7, characterized in that, The fixing structure (3) includes: a guide (31) and a sliding member (32); the guide (31) and the sliding member (32) are respectively disposed on the first clamping part (112) and the second clamping part (122); And / or the guide (31) and the slider (32) are respectively disposed on the second clamping part (122) and the first clamping part (112); The fixing structure (3) further includes a connector (33), which passes through the sliding member (32) and the guide member (31) in sequence to fix the clamping mechanism (1).
9. The parallel double-gate clamping fixture according to claim 8, characterized in that, The plug (33) is threadedly connected to the sliding member (32) and the guide member (31).
10. The parallel double-gate clamping fixture according to claim 8, characterized in that, The diameter of the insertion hole on the slider (32) is larger than the outer diameter of the insertion member (33).