Electromagnetic water meter upper cover pulling jig

Abstract

The utility model provides an electromagnetic water meter upper cover pulling jig which comprises a bottom plate, two vertical plates are fixed to the upper end of the bottom plate side by side, the upper ends of the vertical plates are connected with a top plate, and a sliding groove is formed in the top plate. An upper supporting plate is connected to the upper portion of the top plate, a sliding block is arranged at the lower end of the upper supporting plate, and the sliding block is embedded in the sliding groove; a lifting mechanism is installed on the upper supporting plate, and the lower end of the lifting mechanism is fixedly connected with a clamp capable of pulling up the upper cover upwards. A lower supporting plate is connected between the two vertical plates, a supporting plate is fixedly installed at the front end of the lower supporting plate, and a U-shaped opening is formed in the front end of the supporting plate. The supporting plate is arranged, the U-shaped opening is machined in the front end of the supporting plate, and the water meter is divided into the upper part and the lower part through the opening, so that the upper cover is separated from the meter head body under the action of the lifting mechanism and the clamp.

Description

Technical Field

[0001] The utility model relates to the technical field of water meter processing, in particular to a jig for extracting an upper cover of an electromagnetic water meter. Background Art

[0002] The current electromagnetic water meters are roughly divided into two types: clamp type and flange type, but the structure of the meter head is the same. Figure 4 , 5 As shown, its general structure is: it includes a water meter body, a meter head connecting pipe is welded on the water meter body, and a meter head is welded on the other end of the meter head connecting pipe. The meter head includes a meter head body, the lower end of the meter head body is connected to the meter head connecting pipe, and an upper cover is provided at the upper end of the meter head body by spot welding, and four evenly distributed claws are connected to the lower part of the upper cover, and the lower end of the upper cover is opened outward for clamping the meter cover. Four reinforcing ribs protruding downward are provided at the bottom of the meter head body, and the reinforcing ribs and the meter head connecting pipe are also welded together to strengthen the connection strength between the meter head body and the meter head connecting pipe.

[0003] When replacing the battery or disassembling a defective electromagnetic water meter, the welding point where the upper cover connects to the meter body needs to be milled off with a milling machine before the upper cover can be removed. However, due to the high current during welding, the heat generated is also very large. Due to thermal expansion and contraction, the edge of the upper cover often expands and sticks to the outer shell of the meter body after welding. Therefore, in actual operation, even after the welding point is milled off, it is impossible to remove the upper cover from the meter body by hand. Therefore, when replacing the battery or disassembling a defective product, it is very necessary to provide the operator with a special tool that can smoothly remove the upper cover. Utility Model Content

[0004] In view of this, the utility model provides an electromagnetic water meter upper cover extraction fixture which separates the water meter into upper and lower parts through a supporting plate, so that the upper cover can be separated from the meter head body under the action of a lifting mechanism and a clamp.

[0005] To this end, the present application provides the following technical solutions: a jig for removing the upper cover of an electromagnetic water meter, comprising a base plate, two vertical plates being fixed side by side at the upper end of the base plate, the upper end of the vertical plate being connected to a top plate, and a slide groove being provided in the top plate; an upper support plate is connected above the top plate, and a slider is provided at the lower end of the upper support plate, and the slider is embedded in the slide groove; a lifting mechanism is installed on the upper support plate, and a clamp that can pull the upper cover upward is fixedly connected to the lower end of the lifting mechanism; a lower support plate is connected between the two vertical plates, and a support plate is fixedly installed at the front end of the lower support plate, and a U-shaped opening is provided at the front end of the support plate. When in use, the head connecting pipe of the electromagnetic water meter is placed in the opening, the water meter body of the electromagnetic water meter is placed at the lower end of the opening, and the head of the electromagnetic water meter is placed at the upper end of the opening.

[0006] Furthermore, the slide groove is a V-shaped groove, and the sliding block is an inverted V-shaped groove.

[0007] Furthermore, the lifting mechanism includes a screw rod, which is screwed in the upper support plate. A handwheel is installed at the upper end of the screw rod, and the handwheel is placed at the upper end of the upper support plate. The lower end of the screw rod is placed at the lower end of the upper support plate and is screwed with a long nut, and the long nut is fixedly connected to the upper end of the clamp.

[0008] Furthermore, the clamp includes a cross-shaped bracket, and four support rods extending radially outward are evenly distributed around the bracket. The free end of the support rod is provided with a downwardly protruding boss, and the lower end of the boss is provided with a radially arranged groove. The groove is connected with a clamping jaw by a pin shaft, and the clamping jaw is provided with a long strip hole arranged in the radial direction, and the pin shaft is installed in the long strip hole.

[0009] Furthermore, a limiting column is installed on the rear end surface of the upper support plate, and the lower end of the limiting column is exposed from the lower end surface of the slider.

[0010] Furthermore, three limiting grooves are provided on the upper end surface of the support plate to accommodate the reinforcing ribs provided on the lower end of the meter head body.

[0011] Furthermore, the upper support plate is provided with two guide holes which penetrate vertically, a guide sleeve is fixed in the guide hole, a guide column is movably installed in the guide sleeve, and the lower end of the guide column is fixedly connected to the upper end of the clamp.

[0012] Furthermore, the lower end of the bracket is provided with a gasket made of a flexible material.

[0013] Furthermore, the clamping jaw is provided with an upwardly protruding stopper on the other side of the clamping head to prevent the clamping jaw from excessively flipping when subjected to force.

[0014] Furthermore, a universal wheel is mounted at the lower end of the base plate.

[0015] The beneficial effect of the utility model is as follows: the utility model provides a support plate, processes a U-shaped opening at the front end of the support plate, and separates the water meter into an upper and lower part through the opening, wherein the meter head is on the upper part and the meter body is on the lower part; then a lifting mechanism is installed on the upper support plate above the support plate, and a clamp is installed at the lower end of the lifting mechanism to hold the upper cover through a clamping claw, and the clamp and the upper cover are lifted upward by the lifting mechanism, so that the upper cover is separated from the meter head body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 yes Figure 1 Bottom view of the center fixture.

[0019] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle clamping jaw.

[0020] Figure 4 It is a three-dimensional diagram of an electromagnetic water meter.

[0021] Figure 5 This is a three-dimensional picture of the electromagnetic water meter from another angle.

[0022] Figure 6 It is a schematic diagram of the utility model when the upper cover of the water meter to be removed is placed.

[0023] Figure 7 It is a schematic diagram of the use state of the utility model.

[0024] In the figure: 1, universal wheel; 2, bottom plate; 3, vertical plate; 4, lower support plate; 5, support plate; 5.1, limit groove; 5.2, opening; 6, top plate; 6.1, slide groove; 7, limit column; 8, upper support plate; 8.1, slider; 8.2, guide hole; 9, guide column; 10, lifting mechanism; 10.1, hand wheel; 10.2, screw rod; 10.3, long nut; 11, guide sleeve; 12, clamp ; 12.1, gasket; 12.2, bracket; 12.3, support rod; 12.4, boss; 12.5, groove; 13, pin shaft; 14, elastic retaining ring for shaft; 15, clamping claw; 15.1, chuck; 15.2, long hole; 15.3, retaining platform; 16, water meter body; 17, meter head body; 18, upper cover; 19, clamping claw; 20, welding point 21, meter head connecting pipe; 22, reinforcing rib. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0028] The utility model discloses a jig for extracting the upper cover of an electromagnetic water meter, such as Figure 1 As shown, it includes a bottom plate 2, two vertical plates 3 are fixed side by side at the upper end of the bottom plate, and a top plate 6 is connected to the upper ends of the two vertical plates, and a V-shaped slide groove 6.1 is provided in the top plate. An upper support plate 8 is connected above the top plate, and an inverted V-shaped slider 8.1 is provided at the lower end of the upper support plate, and the slider is slidably installed in the slide groove. A handwheel 10.1 is provided on the upper end surface of the front end of the upper support plate, and a screw rod 10.2 is fixedly connected in the handwheel, and the rod body of the screw rod is screwed into the plate body of the upper support plate, and a long nut 10.3 is screwed on the other end of the screw rod, and a clamp 12 that can pull the upper cover 18 on the water meter head upward and separate it from the meter head body 17 is fixedly connected to the lower end of the long nut, and the handwheel, the upper support plate, the screw rod and the long nut together constitute a lifting mechanism 10 that pulls the clamp together with the upper cover upward.

[0029] A lower support plate 4 is connected to the middle and lower parts of the two vertical plates, and a support plate 5 is fixedly installed at the front end of the lower support plate. The front end of the support plate is provided with a U-shaped opening 5.2. Figure 6 , 7As shown, when in use, the meter head body is placed on the upper end of the support plate, the meter head connecting pipe 21 is placed in the opening, and the water meter body 16 is placed on the lower end of the support plate. When the upper cover moves upward under the clamping of the clamp and the pulling force of the lifting mechanism, since the water meter body is blocked by the support plate, an opposite pulling force will naturally be formed at the connection between the upper cover and the meter head; since the connection between the upper cover and the meter head is only adhered together, the connection strength is much smaller than the connection strength of the meter head connecting pipe and the meter head, and the meter head connecting pipe and the water meter body, so when the pulling force is greater than the connection force between the upper cover and the meter head, the upper cover and the meter head can be separated.

[0030] like Figure 2 , 3 As shown, the clamp includes a cross-shaped bracket 12.2, four support rods 12.3 extending radially outward are evenly distributed around the bracket, and the free end of the support rod is provided with a boss 12.4 protruding downward. The lower end of the boss is provided with a radial groove 12.5, and a clamping claw 15 is connected to the groove by a pin 13. The clamping claw is provided with a long hole 15.2 arranged in a radial direction. The pin is installed in the long hole. The function of the long hole is to adjust the distance of the clamping claw relative to the center point of the bracket. The end of the pin is clamped by a shaft elastic retaining ring 14 to prevent the pin from slipping out of the through hole. The side surface of the lower part of the clamping claw is provided with a chuck 15.1 extending toward the center end of the bracket. The thickness of the chuck must ensure that it can penetrate into the gap between the clamping claw and the body of the meter head.

[0031] As a preferred embodiment, Figure 1 As shown, a limit column 7 is installed on the rear end face of the upper support plate, and the lower end of the limit column is exposed from the lower end face of the slider. Its function is that when the upper support plate slides to a certain distance toward the front end, the limit column will collide with the top plate, thereby preventing the upper support plate from slipping off the top plate due to excessive sliding distance.

[0032] As a preferred embodiment, in order to prevent the upper cover from rotating when being removed and causing wear to the meter head and the water meter body, Figure 1 As shown, three limit grooves 5.1 are provided on the upper end surface of the support plate. When the meter head is placed on the support plate, the reinforcing ribs 22 protruding from the lower end of the meter head fall into the limit grooves. In order to make the protruding portion at the lower end of the meter head completely fall into the limit grooves, the depth of the limit grooves is slightly greater than the height of the protruding portion.

[0033] As a preferred embodiment, Figure 2 As shown, the upper support plate is provided with two vertically penetrating guide holes 8.2, in which guide sleeves 11 are fixed, and guide posts 9 are movably installed in the guide sleeves, and the lower ends of the guide posts are connected to the upper ends of the brackets.

[0034] As a preferred embodiment, Figure 2As shown, a gasket 12.1 made of polyurethane material is installed at the contact position between the lower end of the bracket and the upper cover. The outer diameter of the gasket is slightly larger than the outer diameter of the upper cover to prevent the upper cover from being scratched by the bracket.

[0035] As a preferred embodiment, Figure 3 As shown, the clamping jaw is provided with an upwardly protruding stop 15.3 on the other side relative to the chuck. When the clamping jaw is subjected to pulling force, it will rotate. At this time, the inner side surface of the stop surface abuts against the outer end surface of the bracket to prevent the clamping jaw from further rotating, thereby further ensuring that the chuck at the front end of the clamping jaw can support the claw on the upper cover.

[0036] As a preferred embodiment, Figure 1 As shown, in order to facilitate the movement of the extraction fixture and reduce the operator's work intensity, four universal wheels 1 are installed at the lower end of the base plate.

[0037] When using, first confirm whether the four clamps are located at the outermost side. If not, move the clamps to the outermost side by hand. Then place the water meter with the weld point 20 cut off on the support plate, ensure that the meter head body is close to the inside, and the reinforcing ribs at the lower end of the meter head body fall into the limit groove. At this time, rotate the handwheel clockwise to move the bracket together with the clamps downward, and stop rotating when the clamps reach the claws. Manually adjust the position of the upper support plate to ensure that the four clamps are evenly distributed around the upper cover; then push the four clamps inward to ensure that the clamps of the clamps are just inserted into the lower end of the clamps; when everything is ready, rotate the handwheel counterclockwise, and the four clamps that move upward can pull the upper cover out of the meter head body.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A jig for removing the upper cover of an electromagnetic water meter, characterized in that: It comprises a bottom plate, and two vertical plates are fixed side by side at the upper end of the bottom plate, and the upper end of the vertical plate is connected to a top plate, and a slide groove is provided in the top plate; an upper support plate is connected above the top plate, and a slider is provided at the lower end of the upper support plate, and the slider is embedded in the slide groove; a lifting mechanism is installed on the upper support plate, and a clamp that can pull the upper cover upward is fixedly connected to the lower end of the lifting mechanism; a lower support plate is connected between the two vertical plates, and a supporting plate is fixedly installed at the front end of the lower support plate, and a U-shaped opening is provided at the front end of the supporting plate, and when in use, the head connecting pipe of the electromagnetic water meter is placed in the opening, the water meter body of the electromagnetic water meter is placed at the lower end of the opening, and the head of the electromagnetic water meter is placed at the upper end of the opening.

2. According to claim 1, the electromagnetic water meter cover extraction jig is characterized in that: The slide groove is a V-shaped groove, and the slide block is an inverted V-shaped groove.

3. According to claim 1, the electromagnetic water meter cover extraction jig is characterized in that: The lifting mechanism includes a screw rod, which is screwed in the upper support plate. A hand wheel is installed at the upper end of the screw rod, and the hand wheel is placed at the upper end of the upper support plate. The lower end of the screw rod is placed at the lower end of the upper support plate and is screwed with a long nut, and the long nut is fixedly connected to the upper end of the clamp.

4. According to claim 1, the electromagnetic water meter cover extraction jig is characterized in that: The clamp includes a cross-shaped bracket, and four support rods extending radially outward are evenly distributed around the bracket. The free end of the support rod is provided with a downwardly protruding boss, and the lower end of the boss is provided with a radially arranged groove. A clamping jaw is connected to the groove by a pin shaft, and a long strip hole arranged in the radial direction is provided in the clamping jaw, and the pin shaft is installed in the long strip hole.

5. According to claim 1, the electromagnetic water meter cover extraction jig is characterized in that: A limiting column is arranged on the rear end surface of the upper supporting plate, and the lower end of the limiting column is exposed from the lower end surface of the sliding block.

6. The electromagnetic water meter cover extraction jig according to claim 1, characterized in that: The upper end surface of the support plate is provided with three limiting grooves which can accommodate the reinforcing ribs provided at the lower end of the meter head body.

7. The electromagnetic water meter cover extraction jig according to claim 1, characterized in that: The upper support plate is provided with two guide holes which penetrate vertically, wherein guide sleeves are fixed in the guide holes, and guide posts are movably installed in the guide sleeves, and the lower ends of the guide posts are fixedly connected with the upper ends of the clamps.

8. The electromagnetic water meter cover extraction jig according to claim 4, characterized in that: The lower end of the bracket is provided with a gasket made of flexible material.

9. The electromagnetic water meter cover extraction jig according to claim 4, characterized in that: The clamping jaw is located on the other side of the clamping head and is provided with a stopper which protrudes upwards and prevents the clamping jaw from overturning when subjected to force.

10. The electromagnetic water meter upper cover extraction jig according to claim 1, characterized in that: The lower end of the bottom plate is provided with a universal wheel.

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