A universal caliper

Abstract

The utility model belongs to the technical field of water pump dismounting tool, concretely relates to a universal calipers. The universal calipers, include: the jointing lever, is equipped with at least two plug rod subassembly on it, the plug rod subassembly is suitable for the relative movement on the jointing lever, adjusts the spacing of the flange hole plug rod on each plug rod subassembly, after being inserted into the connecting hole of the flange arranged on the pump shaft respectively, the pump shaft and the impeller on the pump shaft are fixed through the fixed jointing lever. The universal calipers are low in the size requirement to the space around the water pump when fixing the impeller, and compared with the pipe wrench, the impeller is fixed at the same time without scratching the pump body, and the fixation is more firm.

Description

Technical Field

[0001] This utility model belongs to the technical field of water pump disassembly tools, specifically relating to a universal caliper. Background Technology

[0002] In the steam and water systems of power plants, there are many water pumps involved. When disassembling and repairing the water pumps, it is necessary to remove the impellers. To remove the impellers, the impeller locking caps must first be unscrewed. Since unscrewing the impeller locking caps directly without fixing the impellers will only cause the impellers to rotate, the impeller locking caps can only be unscrewed when the impellers are fixed.

[0003] When using pry bars and pipe wrenches to secure the impeller, slippage is likely due to the impeller's circular shape, and the pry bars and pipe wrenches can easily scratch the impeller. In a single-stage centrifugal pump impeller quick disassembly device (publication number CN217800089U), two separating plates are used to clamp the connection between the impeller and the pump body to prevent impeller rotation. However, this requires the disassembly device to be set up first and demands sufficient space around the pump, making it inconvenient to use.

[0004] Therefore, this application proposes a compact universal caliper. Utility Model Content

[0005] The purpose of this invention is to provide a universal clamp to solve the technical problem that existing water pump impeller fixing tools require sufficient space around the water pump and are inconvenient to use.

[0006] To solve the above-mentioned technical problems, this utility model provides a universal caliper, including: a clamping rod with at least two insertion rod assemblies; the insertion rod assemblies are adapted to move relative to each other on the clamping rod, and the spacing of the flange hole insertion rods on each insertion rod assembly is adjusted so that after being inserted into the connection holes of the flanges provided on the pump shaft, the pump shaft and the impeller on the pump shaft are fixed by fixing the clamping rod.

[0007] Furthermore, the latching rod is provided with at least one sliding frame to support the plug assembly, so that the plug assembly supported by the sliding frame can move relative to other plug assemblies.

[0008] Furthermore, the insertion rod assembly includes: a mating block adapted to be connected to the snap-fit ​​rod or the sliding frame; the mating block has an insertion rod seat receiving hole to accommodate the insertion rod seat, and the flange hole of the insertion rod seat is oriented towards the outward direction of the snap-fit ​​rod body; the mating block has a pin hole along the length direction of the snap-fit ​​rod, and the insertion rod seat has a locking hole corresponding to the pin hole; a pin, which is adapted to the pin hole and the locking hole to be inserted into the locking hole through the pin hole, so that the insertion rod seat is connected to the mating block.

[0009] Furthermore, the end of the insert rod seat that faces outward in the same direction as the rod body of the snap-fit ​​rod is threadedly connected to the flange hole insert rod.

[0010] Furthermore, the locking rod is connected to a fixed handle along the length of the locking rod.

[0011] Furthermore, one end of the fixed handle is provided with a connector, and the connector has a strip-shaped hole; one end face of the locking rod is provided with a handle slot, and the handle slot extends inward to form a first countersunk groove, and a second countersunk groove and a third countersunk groove located on both sides of the first countersunk groove and symmetrical about the first countersunk groove; the handle slot is provided with a force switching rod, which is adapted to pass through the strip-shaped hole, so as to limit the connector during the process of the connector being pulled out from the first countersunk groove, the second countersunk groove, or the third countersunk groove and then inserted into a different groove.

[0012] Furthermore, the handle slot is provided with a second groove abutment and a third groove abutment. The second groove abutment is adapted to abut against the plug when the plug is inserted into the second countersunk groove, and the third groove abutment is adapted to abut against the plug when the plug is inserted into the third countersunk groove.

[0013] Furthermore, the second groove abutment portion and the third groove abutment portion cause the handle slot to be in a constricted shape, and when the plug is inserted into the first countersunk groove, it abuts against the second groove abutment portion and the third groove abutment portion.

[0014] Furthermore, a locking screw is provided on the sliding frame.

[0015] The beneficial effects of this utility model are that it aims to solve the technical problem that existing water pump impeller fixing tools require sufficient space around the water pump and are inconvenient to use. This universal caliper has at least two relatively movable insertion rod assemblies on the clamping rod. By adjusting the distance between the insertion rod assemblies, the distance between the flange hole insertion rods on the adjusting insertion rod assembly can be made to correspond to the distance between the connection holes of the flange on the pump shaft of the disassembled water pump, thereby inserting into the connection holes of the flange on the pump shaft. In this way, only the clamping rod needs to be fixed to fix the pump shaft, and the impeller on the pump shaft can also be fixed at the same time. The size of this universal caliper is only close to that of a pipe wrench, and the space requirement around the water pump is low when fixing the impeller. At the same time, compared with a pipe wrench, it will not scratch the pump body when fixing the impeller, and the fixation is more secure. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the universal caliper of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the universal caliper of this utility model. Figure 2 ; Figure 3 The explosion of this utility model's universal caliper Figure 1 ; Figure 4 The explosion of this utility model's universal caliper Figure 2 ; Figure 5 This is a schematic diagram of the structure of the universal caliper of this utility model. Figure 3 ; In the picture: 100, 110, 121, 122, 123, 130, 140, 150, 200, 210, 211, 220, 221, 230, 200, 210, 220, 221, 230, 300, 400, 410, 500, 510, 511, 510, 511, 500, 510, 511. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments implemented by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Example like Figure 1 As shown, this utility model provides a universal caliper, including: a clamping rod 100, on which at least two insertion rod assemblies 200 are provided; the insertion rod assemblies 200 are adapted to move relative to each other on the clamping rod 100, and the spacing of the flange hole insertion rods 300 on each insertion rod assembly 200 is adjusted so that after being inserted into the connection holes of the flanges provided on the pump shaft, the pump shaft and the impeller on the pump shaft are fixed by fixing the clamping rod 100.

[0020] This universal caliper features at least two movable insert rod assemblies 200 on the clamping rod 100. By adjusting the spacing between the insert rod assemblies 200, the spacing of the flange hole insert rods 300 on the adjusting insert rod assembly 200 can correspond to the spacing of the connection holes of the flange on the pump shaft of the disassembled water pump, thus allowing them to be inserted into the connection holes of the flange on the pump shaft. In this way, only the clamping rod 100 needs to be fixed to fix the pump shaft, and the impeller on the pump shaft can also be fixed at the same time. This universal caliper only needs to be about the same size as a pipe wrench, and the space requirement around the water pump is low when fixing the impeller. At the same time, compared with a pipe wrench, it will not scratch the pump body when fixing the impeller, and the fixation is more secure.

[0021] like Figure 1 As shown, the snap-fit ​​rod 100 is provided with at least one sliding frame 400 to support the insert rod assembly 200, allowing the insert rod assembly 200 supported by the sliding frame 400 to move relative to other insert rod assemblies 200. Preferably, the snap-fit ​​rod 100 can be provided with one sliding frame 400, and one insert rod assembly 200 is provided on the sliding frame 400. One insert rod assembly 200 is also provided at one end of the snap-fit ​​rod 100, resulting in two flange hole insert rods 300. When overhauling the water pump and removing the motor, the sliding frame 400 can be adjusted so that the distance between the two flange hole insert rods 300 is equal to the distance between the two connecting holes of the flange of the coupling still mounted on the pump shaft, allowing them to be inserted. Afterwards, fixing the snap-fit ​​rod 100 will fix the pump shaft, thus also fixing the impeller on the pump shaft.

[0022] like Figure 2As shown, in at least one embodiment, the insertion rod assembly 200 may include: a mating block 210, adapted to be connected to the snap-fit ​​rod 100 or the sliding frame 400; the mating block 210 may be, but is not limited to, welded to the snap-fit ​​rod 100 or the sliding frame 400; the mating block 210 has an insertion rod seat receiving hole 211 to receive the insertion rod seat 220, and the flange hole insertion rod 300 on the insertion rod seat 220 faces outward of the rod body of the snap-fit ​​rod 100; preferably, the flange hole insertion rod 300 faces the thickness direction of the snap-fit ​​rod 100; the mating block 210 has a pin hole 212 along the length direction of the snap-fit ​​rod 100, and the insertion rod seat 220 has a locking hole 221 corresponding to the pin hole 212; a pin 230, which is adapted to the pin hole 212 and the locking hole 221 to be inserted into the locking hole 221 through the pin hole 212, so that the insertion rod seat 220 is connected to the mating block 210. Power plants have a wide variety of water pump models, and flange hole inserts 300 of a single length or thickness are difficult to fit various flange connection holes. Therefore, by opening insert seat receiving holes 211 and pin holes 212 on the mating block 210, insert seat 220s with flange hole inserts 300 of various lengths or thicknesses can be prepared in advance. After the insert seat 220 is inserted into the insert seat receiving hole 211, the pin 230 is inserted into the locking hole 221 of the insert seat 220 through the pin hole 212. (Refer to...) Figure 2 Maintenance personnel only need to ensure that after the flange hole insert rod 300 is connected to the flange connection hole, the pin rod 230 is facing upward or diagonally upward, and the pin rod 230 can fix the insert rod seat 220 in the mating block 210. This makes it very convenient to replace the flange hole insert rod 300 during large-scale maintenance.

[0023] Preferably, the end of the insert rod seat 220 that faces outward in the same direction as the rod body of the snap-fit ​​rod 100 is threadedly connected to the flange hole insert rod 300.

[0024] If space permits around the water pump, to make it easier for maintenance personnel to secure the clamp rod 100, such as Figure 2 As shown, the locking rod 100 can be connected to a handle 500 along the length direction of the locking rod 100.

[0025] like Figure 3 and Figure 4As shown, one end of the handle 500 is provided with a connector 510, and the connector 510 has a strip-shaped hole 511; one end face of the locking rod 100 is provided with a handle slot 110, and the handle slot 110 extends inward to form a first countersunk groove 121, and a second countersunk groove 122 and a third countersunk groove 123 located on both sides of the first countersunk groove 121 and symmetrical about the first countersunk groove 121; the handle slot 110 is provided with a force switching rod 130, which is adapted to pass through the strip-shaped hole 511, so as to limit the connector 510 during the process of pulling out the connector 510 from the first countersunk groove 121, the second countersunk groove 122, or the third countersunk groove 123 and then inserting it into a different slot. In use, the handle 500 can be pulled out and then aligned with the first countersunk groove 121, the second countersunk groove 122, or the third countersunk groove 123 and inserted back in, so that the angle of the handle 500 relative to the locking rod 100 can be adjusted again. Water pumps are often installed at low positions. Even when maintenance personnel squat down, they are still higher than the water pump and its shaft. In this situation, if the maintenance personnel are on the left side of the water pump and it is inconvenient to use their weight to hold the universal caliper in place after connecting it to the flange, they can pull out the handle 500, turn it to the right side of the water pump, and then push it back in. This way, the handle 500 is tilted to the right side of the water pump, and the maintenance personnel can use their weight to hold the handle 500 in place, thereby fixing the impeller. In this way, even if the universal caliper is relatively short, it is easier to apply force.

[0026] Preferably, the handle slot 110 may be provided with a second slot abutment portion 140 and a third slot abutment portion 150. The second slot abutment portion 140 is adapted to abut against the plug 510 when the plug 510 is inserted into the second countersunk slot 122, and the third slot abutment portion 150 is adapted to abut against the plug 510 when the plug 510 is inserted into the third countersunk slot 123, so as to share the pressure of the plug 510 and reduce the risk of the plug 510 breaking.

[0027] like Figure 5 As shown, the second groove abutment portion 140 and the third groove abutment portion 150 cause the handle slot 110 to be constricted, and when the connector 510 is inserted into the first countersunk groove 121, it abuts against the second groove abutment portion 140 and the third groove abutment portion 150. In this way, this universal caliper can also be used as an F-wrench when needed.

[0028] like Figure 1 As shown, a locking screw 410 can be provided on the sliding frame 400 to facilitate the connection between the flange hole insertion rod 300 and the flange connection hole.

[0029] In summary, this universal caliper features at least two movable insert rod assemblies 200 on the clamping rod 100. By adjusting the spacing between the insert rod assemblies 200, the spacing of the flange hole insert rods 300 on the adjusting insert rod assembly 200 can correspond to the spacing of the connection holes of the flange on the pump shaft of the disassembled water pump, thus allowing them to be inserted into the connection holes of the flange on the pump shaft. In this way, only the clamping rod 100 needs to be fixed to fix the pump shaft, and the impeller on the pump shaft can also be fixed at the same time. This universal caliper only needs to be about the same size as a pipe wrench, and the space requirements around the water pump are low when fixing the impeller. At the same time, compared with a pipe wrench, it will not scratch the pump body when fixing the impeller, and the fixation is more secure.

[0030] In the embodiments provided in this application, it should be understood that the disclosed systems and devices can be implemented in other ways. The embodiments described above are merely illustrative. For example, the division of the mechanism is only a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[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," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A universal caliper, characterized in that, include: A snap-fit ​​rod (100) having at least two insert rod assemblies (200) on it. The insert rod assembly (200) is adapted to move relative to the snap-fit ​​rod (100) to adjust the spacing of the flange hole insert rods (300) on each insert rod assembly (200) so that after being inserted into the connection holes of the flanges provided on the pump shaft, the pump shaft and the impeller on the pump shaft are fixed by fixing the snap-fit ​​rod (100).

2. The universal caliper according to claim 1, characterized in that, The snap-fit ​​rod (100) is provided with at least one sliding frame (400) to carry the plug assembly (200), so that the plug assembly (200) carried by the sliding frame (400) can move relative to other plug assemblies (200).

3. The universal caliper according to claim 2, characterized in that, The insertion rod assembly (200) includes: A docking block (210) is adapted to be connected to the snap-fit ​​rod (100) or the sliding frame (400); The docking block (210) has a rod seat receiving hole (211) to receive the rod seat (220) and to make the flange hole rod (300) on the rod seat (220) face outwards towards the rod body of the snap rod (100); The docking block (210) has a pin hole (212) along the length of the snap-fit ​​rod (100), and the insert rod seat (220) has a locking hole (221) corresponding to the pin hole (212). A pin (230) is adapted to the pin hole (212) and the locking hole (221) to be inserted through the pin hole (212) into the locking hole (221) to connect the insert seat (220) to the mating block (210).

4. The universal caliper according to claim 3, characterized in that, The insert rod seat (220) and the snap rod (100) are connected in the same outward direction at one end to the flange hole insert rod (300).

5. The universal caliper according to claim 3, characterized in that, The latching rod (100) is connected to a handle (500) along the length of the latching rod (100).

6. The universal caliper according to claim 5, characterized in that, One end of the handle (500) is provided with a connector (510), and the connector (510) has a strip hole (511). One end face of the snap-fit ​​rod (100) is provided with a handle slot (110), and the handle slot (110) extends inward to form a first countersunk groove (121), as well as a second countersunk groove (122) and a third countersunk groove (123) located on both sides of the first countersunk groove (121) and symmetrical about the first countersunk groove (121). The handle slot (110) is provided with a force switching rod (130), which is adapted to pass through the strip hole (511) to limit the plug (510) during the process of pulling the plug (510) out of the first countersunk groove (121), the second countersunk groove (122), or the third countersunk groove (123) and then inserting it into a different groove.

7. The universal caliper according to claim 6, characterized in that, The handle slot (110) is provided with a second groove abutment (140) and a third groove abutment (150). The second groove abutment (140) is adapted to abut against the plug (510) when the plug (510) is inserted into the second countersunk groove (122), and the third groove abutment (150) is adapted to abut against the plug (510) when the plug (510) is inserted into the third countersunk groove (123).

8. The universal caliper according to claim 7, characterized in that, The second groove abutment (140) and the third groove abutment (150) cause the handle slot (110) to be constricted, and when the plug (510) is inserted into the first countersunk groove (121), it abuts against the second groove abutment (140) and the third groove abutment (150).

9. The universal caliper according to claim 2, characterized in that, The sliding frame (400) is provided with a locking screw (410).

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