CN112775861A

CN112775861A - Clamp positioning device for water meter shell

Info

Publication number: CN112775861A
Application number: CN201911083558.XA
Authority: CN
Inventors: 吴新潮; 贾鹏
Original assignee: Xian Triones Digital Information Co Ltd
Current assignee: Xian Triones Digital Information Co Ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2021-05-11

Abstract

The invention relates to the technical field of semi-finished product clamping auxiliary devices, in particular to a clamp positioning device of a water meter shell; the device comprises a supporting plate, two groups of fixing plates, an electric telescopic rod, a connecting pipe and two groups of clamping blocks; still include the base, first screwed pipe and first threaded rod, base top center is provided with primary shaft bearing, and rotatable first ball bearing that is fixed with in primary shaft bearing inside, base top left side is provided with the riser, still include first bevel gear, the second bevel gear, the handle, left side spliced pole, well spliced pole and right side spliced pole, horizontal intercommunication is provided with first logical groove on the riser, and it is rotatable to be fixed with first ball group to lead to the inside wall in first logical groove, still include four groups and go up the connecting block, four groups's first cover spring, four groups's first flexible pipe of group and four groups lower connecting block, well spliced pole outside fixed cover is equipped with two sets of spacing rings, two sets of spacing ring inboards all are provided with spacing wheelset.

Description

Clamp positioning device for water meter shell

Technical Field

The invention relates to the technical field of semi-finished product clamping auxiliary devices, in particular to a clamp positioning device of a water meter shell.

Background

As is well known, a fixture positioning device for a water meter shell is an auxiliary device used for clamping and fixing a semi-finished product in the production and processing process of the water meter shell so as to better perform subsequent operations, and is widely used in the field of semi-finished product clamping; the existing fixture positioning device for the water meter shell comprises a supporting plate, two groups of fixing plates, an electric telescopic rod, a connecting pipe and two groups of clamping blocks, wherein the bottom ends of the two groups of fixing plates are respectively arranged on the left side and the right side of the top end of the supporting plate; when the existing fixture positioning device for the water meter shell is used, a semi-finished product is placed at the top end of a supporting plate to be conveniently supported and placed, an electric telescopic rod drives clamping blocks to transversely move, the semi-finished product is clamped and fixed through two groups of clamping blocks, the electric telescopic rod is a common electric device in the market, when the electric telescopic rod is bought for use, the electric telescopic rod can be used only by being electrically connected according to a purchased use instruction, and connecting wires can be reasonably wired as long as the electric telescopic rod can work, so that the details are not repeated; the fixture positioning device of the existing water meter shell is found in use, the supporting height of the supporting plate is fixed, and the fixture positioning device cannot be conveniently adjusted according to the current use requirement, so that the adaptability of the fixture positioning device is poor, and the practicability is low.

Disclosure of Invention

In order to solve the technical problems, the invention provides the fixture positioning device for the water meter shell, which has the advantages that the supporting height of the supporting plate can be conveniently adjusted according to the current use requirement, so that the adaptability of the fixture positioning device is enhanced, and the practicability is improved.

The clamp positioning device of the water meter shell comprises a supporting plate, two groups of fixing plates, an electric telescopic rod, a connecting pipe and two groups of clamping blocks, wherein the right side output end and the left side output end of the electric telescopic rod are respectively connected with the left side of the fixing plate on the right side and the right side of the clamping block on the right side; the screw-type solar cell further comprises a base, a first threaded pipe and a first threaded rod, wherein a first bearing seat is arranged at the center of the top end of the base, a first ball bearing is rotatably fixed in the first bearing seat, the bottom end of the first threaded pipe is in interference fit with the inside of the first ball bearing, the bottom end of the first threaded rod is screwed into the inside of the top end of the first threaded pipe, the top end of the first threaded rod is connected with the center of the bottom end of a supporting plate, a vertical plate is arranged on the left side of the top end of the base, the screw-type solar cell further comprises a first bevel gear, a second bevel gear, a handle, a left connecting post, a middle connecting post and a right connecting post, the first bevel gear is fixedly sleeved on the outer side of the first threaded pipe, the second bevel gear is positioned on the right side of the vertical plate and meshed with the first bevel gear, the left end of the left connecting, the first ball group is rotatably fixed on the inner side wall of the first through groove, the right end of the middle connecting post passes through the first ball group and extends to the right side of the vertical plate, the vertical plate further comprises four groups of upper connecting blocks, four groups of first sleeve springs, four groups of first telescopic pipes and four groups of lower connecting blocks, the top ends of the four groups of upper connecting blocks are respectively arranged at the left front side, the right front side, the left rear side and the right rear side of the bottom end of the supporting plate, one ends of the four groups of first sleeve springs are respectively connected with the four groups of upper connecting blocks, the other ends of the four groups of first sleeve springs are respectively connected with the four groups of lower connecting blocks, the four groups of first sleeve springs are respectively sleeved at the outer sides of the four groups of rotating blocks, the four groups of lower connecting blocks are respectively arranged at the top end of the base, two groups of limiting rings are fixedly sleeved at the outer sides of the middle, two sets of limit wheel groups are respectively attached to and closely contacted with the left side and the right side of the vertical plate.

Preferably, the backup pad top left and right sides all is connected with the curb plate, two sets of curb plates top are horizontal all the symmetry and are provided with the second and lead to the groove, and all can rotate at two sets of second lead to inslot portion and be fixed with the second ball group, still including changeing the handle, turning block and two sets of transmission post, two sets of transmission post outer ends pass two sets of second ball groups respectively and all stretch out to two sets of curb plates outsides, two sets of transmission post inner respectively with two sets of fixed plate outside central symmetric connection, the transmission post right-hand member that is located the right side is connected with turning block left side center, change rotatable the installation on.

Preferably, still include two sets of stationary blades, two sets of lead screw and two sets of clamping pieces, two sets of stationary blades are installed respectively on the curb plate that is located the right side both sides from top to bottom, and the spiral shell dress passes two sets of stationary blades outsides and all wears out to two sets of stationary blades inboards and be connected with two sets of clamping pieces respectively in the inner of two sets of lead screw respectively, and the outer end of two sets of lead screw all is provided with spacing piece, and the turning block is located between two.

Preferably, be located left transmission post left end fixed cover and be equipped with the position circle, and position circle right side and turning block left side all are provided with the slip wheelset, and two sets of slip wheelsets paste the close contact with the two sets of curb plates outside respectively, and two sets of curb plate inside walls all are provided with ring shape spout, and two sets of ring shape spouts are inside all to be fixed with the slider by rotating, and two sets of sliders are symmetrical respectively and install in two sets of fixed plate outsides.

Preferably, the connecting pipe includes second screwed pipe and second threaded rod, is located the left fixed plate right side and is provided with the second bearing frame to rotatable being fixed with second ball bearing in the second bearing frame, the left end and the inside interference fit of second ball bearing of second screwed pipe, inside second threaded rod left end inserted and spiral shell dress to second screwed pipe right-hand member, second threaded rod right-hand member was connected with the clamp splice left side that is located the left side.

Preferably, the clamp comprises two sets of outer connecting rods, two sets of second sleeve springs, two sets of second telescopic tubes and two sets of inner connecting rods, wherein the outer ends of the two sets of outer connecting rods are respectively installed on the inner sides of the two sets of fixing plates, one ends of the two sets of second sleeve springs are respectively connected with the two sets of outer connecting rods, the other ends of the two sets of second sleeve springs are respectively connected with the two sets of inner connecting rods, one ends of the two sets of second telescopic tubes are respectively connected with the two sets of outer connecting rods, the other ends of the two sets of second telescopic tubes are respectively connected with the two sets of inner connecting rods, the two sets of second sleeve springs are respectively sleeved on the outer sides of the two.

Preferably, the device further comprises two sets of third spring sets, two sets of third telescopic tube sets and two sets of adjusting block sets, one ends of the two sets of third spring sets are respectively installed on the inner sides of the two sets of clamping blocks, the other ends of the two sets of third spring sets are respectively connected with the two sets of adjusting block sets, one ends of the two sets of third telescopic tube sets are respectively installed on the inner sides of the two sets of clamping blocks, the other ends of the two sets of third telescopic tube sets are respectively connected with the two sets of adjusting block sets, and the two sets of third spring sets are respectively sleeved on the outer sides of.

Compared with the prior art, the invention has the beneficial effects that: the support plate on the first threaded rod can be driven to longitudinally move by rotating the first threaded pipe, the support height of the support plate can be conveniently adjusted according to the current use requirement, so that the adaptability of the support plate is enhanced, the practicability is improved, the handle can be manually rotated to drive the second bevel gear on the right connecting post to rotate, the first bevel gear rotates along with the first bevel gear on the basis of meshing, so that the first threaded pipe is more conveniently rotated, the connecting post in the first ball group is more smoothly rotated, the friction force is reduced, the self wall thickness of the vertical plate is convenient to improve the support effect, the four groups of first springs are convenient to adjust and improve the support effect, the four groups of first telescopic pipes assist the four groups of first springs to be difficult to distort and deform, the support plate is convenient to longitudinally move only without rotating along with the first threaded pipe, and the sliding is more smooth and reliable when the, the connecting post only rotates and lateral shifting in two sets of spacing collars are supplementary, and spacing wheelset makes things convenient for more to rotate and improves the support effect.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged partial view of portion A of FIG. 1;

FIG. 3 is an enlarged view of a portion B of FIG. 1;

FIG. 4 is an enlarged partial view of portion C of FIG. 1;

in the drawings, the reference numbers: 1. a support plate; 2. a fixing plate; 3. an electric telescopic rod; 4. a clamping block; 5. a base; 6. a first threaded pipe; 7. a first threaded rod; 8. a vertical plate; 9. a first bevel gear; 10. a second bevel gear; 11. a handle; 12. a middle connecting column; 13. a first set of springs; 14. a limiting ring; 15. a limiting wheel set; 16. a side plate; 17. turning a handle; 18. rotating the block; 19. a drive post; 20. a fixing sheet; 21. a lead screw; 22. a clip; 23. a limiting sheet; 24. positioning rings; 25. a sliding wheel set; 26. a slider; 27. a second threaded pipe; 28. a second threaded rod; 29. a second set of springs; 30. a third set of spring sets; 31. and adjusting the block group.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, the fixture positioning device for the water meter shell comprises a support plate 1, two groups of fixing plates 2, an electric telescopic rod 3, a connecting pipe and two groups of clamping blocks 4, wherein the right side output end and the left side output end of the electric telescopic rod 3 are respectively connected with the left side of the fixing plate 2 on the right side and the right side of the clamping block 4 on the right side; the novel screw driver further comprises a base 5, a first threaded pipe 6 and a first threaded rod 7, wherein a first bearing seat is arranged at the center of the top end of the base 5, a first ball bearing is rotatably fixed in the first bearing seat, the bottom end of the first threaded pipe 6 is in interference fit with the inside of the first ball bearing, the bottom end of the first threaded rod 7 is screwed into the inside of the top end of the first threaded pipe 6, the top end of the first threaded rod 7 is connected with the center of the bottom end of the supporting plate 1, a vertical plate 8 is arranged on the left side of the top end of the base 5, the novel screw driver further comprises a first bevel gear 9, a second bevel gear 10, a handle 11, a left connecting column, a middle connecting column 12 and a right connecting column, the first bevel gear 9 is fixedly sleeved on the outer side of the first threaded pipe 6, the second bevel gear 10 is positioned on the right side of the vertical plate 8 and meshed with the first, the right end of a right connecting post is connected with the center of a second bevel gear 10, a first through groove is transversely communicated with and arranged on a vertical plate 8, a first ball group is rotatably fixed on the inner side wall of the first through groove, the right end of a middle connecting post 12 passes through the first ball group and extends out to the right side of the vertical plate 8, the device also comprises four groups of upper connecting blocks, four groups of first sleeve springs 13, four groups of first telescopic tubes and four groups of lower connecting blocks, the top ends of the four groups of upper connecting blocks are respectively arranged at the left front side, the right front side, the left rear side and the right rear side of the bottom end of a supporting plate 1, one ends of the four groups of first sleeve springs 13 are respectively connected with the four groups of upper connecting blocks, the other ends of the four groups of first sleeve springs 13 are respectively connected with the four groups of lower connecting blocks, one ends of the four groups of first telescopic tubes are respectively connected with, four groups of lower connecting blocks are all arranged at the top end of the base 5, two groups of limiting rings 14 are fixedly sleeved outside the middle connecting column 12, the inner sides of the two groups of limiting rings 14 are respectively provided with a limiting wheel set 15, the two groups of limiting wheel sets 15 are respectively in close contact with the left side and the right side of the vertical plate 8, the first threaded pipe 6 is rotated to drive the supporting plate 1 on the first threaded rod 7 to longitudinally move, the supporting height of the supporting plate 1 can be conveniently adjusted according to the current use requirement, so that the adaptability of the supporting plate is enhanced, the practicability is improved, the handle 11 can be manually rotated to drive the second threaded gear 10 on the right connecting column to rotate, the first bevel gear 9 rotates along with the first threaded pipe on the basis of meshing, so that the first threaded pipe 6 is more conveniently rotated, the middle connecting column 12 is more smoothly rotated by the aid of the first ball group, the friction force is reduced, the self wall thickness, the four groups of first telescopic pipes assist the four groups of first sleeve springs 13 to be not easy to distort and deform, the support plate 1 can only move longitudinally and can not rotate along with the first threaded pipe 6 conveniently, the sliding wheel set 25 facilitates the support plate 1 to move longitudinally and is more smooth and reliable, the two groups of limiting rings 14 facilitate the middle connecting column 12 to only rotate but can not move transversely, the limiting wheel set 15 can more conveniently rotate and can improve the supporting effect, the left side and the right side of the top end of the support plate 1 are both connected with the side plates 16, the second through grooves are transversely and symmetrically arranged above the two groups of side plates 16, the second ball groups can be rotatably fixed in the two groups of second through grooves, the four groups of first telescopic pipes also comprise rotating handles 17, rotating blocks 18 and two groups of driving columns 19, the outer ends of the two groups of driving columns 19 respectively penetrate through the two groups of second ball groups and respectively extend out of the two groups of side plates 16, the inner ends of the, the rotating handle 17 is rotatably arranged on the right side of the rotating block 18, the rotating handle 17 is manually rotated to drive the transmission column 19 on the rotating block 18 to rotate, so as to drive the clamped semi-finished product to rotate, the using effect of the semi-finished product is improved, the practicability is enhanced, the auxiliary transmission column 19 of the second ball group rotates more smoothly, the clamping device further comprises two groups of fixing pieces 20, two groups of screw rods 21 and two groups of clamping pieces 22, the two groups of fixing pieces 20 are respectively arranged on the upper side and the lower side of the side plate 16 on the right side, the inner ends of the two groups of screw rods 21 are respectively screwed through the outer sides of the two groups of fixing pieces 20 and are respectively screwed out to the inner sides of the two groups of fixing pieces 20 and are respectively connected with the two groups of clamping pieces 22, the outer ends of the two groups of screw rods 21 are respectively provided with limiting pieces 23, the rotating block 18 is arranged between the two, when the semi-finished product needs to be fixed, two groups of lead screws 21 are manually rotated to drive two groups of clamping pieces 22 to move inwards, so that the rotating block 18 is clamped and fixed between the two groups of clamping pieces 22, the lead screws 21 are more conveniently and manually twisted by two groups of limiting pieces 23 to rotate, the left end of the transmission column 19 on the left side is fixedly sleeved with a positioning ring 24, the right side of the positioning ring 24 and the left side of the rotating block 18 are respectively provided with a sliding wheel set 25, the two groups of sliding wheel sets 25 are respectively in close contact with the outer sides of the two groups of side plates 16, the inner side walls of the two groups of side plates 16 are respectively provided with a circular sliding groove, a sliding block 26 is rotatably fixed in the two groups of circular sliding grooves, the two groups of sliding blocks 26 are respectively and symmetrically arranged on the outer sides of the two groups of fixing plates 2, the two groups, the connecting pipe only rotates but does not transversely move, the connecting pipe comprises a second threaded pipe 27 and a second threaded rod 28, a second bearing seat is arranged on the right side of the left fixing plate 2, a second ball bearing is rotatably fixed in the second bearing seat, the left end of the second threaded pipe 27 is in interference fit with the inside of the second ball bearing, the left end of the second threaded rod 28 is inserted into and screwed into the right end of the second threaded pipe 27, the right end of the second threaded rod 28 is connected with the left side of the clamping block 4 on the left side, the clamping block 4 on the second threaded rod 28 is driven to transversely move by manually rotating the second threaded pipe 27, when the electric telescopic rod 3 is used for a long time and fails, the electric telescopic rod still can be conveniently fixed, so that the fixing effect is achieved, the connecting pipe also comprises two groups of outer connecting rods, two groups of second set springs 29, two groups of second telescopic pipes and two groups of inner connecting rods, the, one end of two sets of second set springs 29 is connected with two sets of external connecting rods, the other end of two sets of second set springs 29 is connected with two sets of internal connecting rods, one end of two sets of second telescopic pipes is connected with two sets of external connecting rods, the other end of two sets of second telescopic pipes is connected with two sets of internal connecting rods, two sets of second set springs 29 are respectively sleeved outside two sets of second telescopic pipes, two sets of internal connecting rods are respectively arranged at the outer ends of two sets of clamping blocks 4, the two sets of second set springs 29 and the two sets of second telescopic pipes are used for convenient adjustment and improving the supporting effect, meanwhile, when the clamping block 4 on the left side moves transversely, the second set spring 29 on the left side enables the second threaded rod 28 not to rotate along with the rotation of the second threaded pipe 27, the device also comprises two sets of third set springs 30, two sets of third telescopic pipe sets and two sets of adjusting block sets 31, one end of two sets of third set springs, the other ends of the two sets of third spring groups 30 are respectively connected with the two sets of adjusting block groups 31, one ends of the two sets of third telescopic tube groups are respectively arranged on the inner sides of the two sets of clamping blocks 4, the other ends of the two sets of third telescopic tube groups are respectively connected with the two sets of adjusting block groups 31, the two sets of third spring groups 30 are respectively sleeved on the outer sides of the two sets of third telescopic tube groups, the two sets of third spring groups 30 drive the two sets of adjusting block groups 31 to be convenient to clamp semi-finished products, the semi-finished products are conveniently adaptive to the size and shape of the semi-finished products, the clamping is more stable, and the third spring groups.

The fixture positioning device for the water meter shell is characterized in that the installation mode, the connection mode or the arrangement mode of all the components are welding, riveting or other common mechanical modes, wherein the slidable/rotatable fixing mode is that the components do not fall off in the sliding/rotating state, the sealing communication is that the two connecting pieces are communicated and simultaneously sealed, the specific structures, the models and the coefficient indexes of all the components are self-contained technologies, the beneficial effects can be realized, all the electric modules and the electric appliances are common electric appliances in the market, the electric modules can be used only by being electrically connected with each other according to the purchased use specifications when bought back for use, and the control module is the common self-contained module, so the repeated description is omitted.

In the clamp positioning device for the water meter shell, if not stated otherwise, the directional words included in the terms such as "up, down, left, right, front, back, inner, and vertical and horizontal" only represent the orientation of the term in the normal use state, or be a trivial term understood by those skilled in the art, and should not be considered as limiting the term, at the same time, the numerical terms "first," "second," and "third," etc. do not denote any particular quantity or order, but rather are used to distinguish one from another, furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A fixture positioning device for a water meter shell comprises a supporting plate (1), two groups of fixing plates (2), an electric telescopic rod (3), a connecting pipe and two groups of clamping blocks (4), wherein the right side output end and the left side output end of the electric telescopic rod (3) are respectively connected with the left side of the fixing plate (2) on the right side and the right side of the clamping block (4) on the right side; the novel screw thread machine is characterized by further comprising a base (5), a first threaded pipe (6) and a first threaded rod (7), wherein a first bearing seat is arranged at the center of the top end of the base (5), a first ball bearing is rotatably fixed in the first bearing seat, the bottom end of the first threaded pipe (6) is in interference fit with the inside of the first ball bearing, the bottom end of the first threaded rod (7) is screwed into the inside of the top end of the first threaded pipe (6), the top end of the first threaded rod (7) is connected with the center of the bottom end of the supporting plate (1), a vertical plate (8) is arranged on the left side of the top end of the base (5), the novel screw thread machine further comprises a first bevel gear (9), a second bevel gear (10), a handle (11), a left connecting column, a middle connecting column (12) and a right connecting column, the first bevel gear (9) is fixedly sleeved on the outer side of the first threaded pipe (6), the second bevel, the left end of a left connecting column is connected with the center of the right side of a handle (11), the left end and the right end of a middle connecting column (12) are respectively connected with the left connecting column and the right connecting column, the right end of the right connecting column is connected with the center of a second bevel gear (10), a first through groove is transversely communicated with a vertical plate (8), a first ball group is rotatably fixed on the inner side wall of the first through groove, the right end of the middle connecting column (12) passes through the first ball group and extends to the right side of the vertical plate (8), the device also comprises four groups of upper connecting blocks, four groups of first sleeve springs (13), four groups of first telescopic pipes and four groups of lower connecting blocks, the top ends of the four groups of upper connecting blocks are respectively arranged at the left front side, the right front side, the left rear side and the right rear side of the bottom end of a supporting plate (1), one ends of the four groups of first sleeve springs (13) are respectively connected with the four groups of upper connecting blocks, the other ends of the four groups of first telescopic pipes are respectively connected with four groups of lower connecting blocks, four groups of first sleeve springs (13) are respectively sleeved on the outer sides of the four groups of rotating blocks (18), the four groups of lower connecting blocks are all installed at the top end of the base (5), two groups of limiting rings (14) are fixedly sleeved on the outer sides of the middle connecting columns (12), limiting wheel sets (15) are arranged on the inner sides of the two groups of limiting rings (14), and the two groups of limiting wheel sets (15) are respectively in close contact with the left side and the right side of the vertical.

2. The fixture positioning device for the water meter shell according to claim 1, wherein the left side and the right side of the top end of the support plate (1) are respectively connected with a side plate (16), second through grooves are transversely and symmetrically formed above the two groups of side plates (16), the second ball groups can be rotatably fixed in the two groups of second through grooves, the fixture positioning device further comprises a rotating handle (17), a rotating block (18) and two groups of transmission columns (19), the outer ends of the two groups of transmission columns (19) respectively penetrate through the two groups of second ball groups and respectively extend out of the two groups of side plates (16), the inner ends of the two groups of transmission columns (19) are respectively and symmetrically connected with the centers of the outer sides of the two groups of fixing plates (2), the right end of the transmission column (19) on the right side is connected with the center of the left side of the rotating block (18), and the.

3. The fixture positioning device for the water meter shell according to claim 2, further comprising two sets of fixing plates (20), two sets of screws (21) and two sets of clamping plates (22), wherein the two sets of fixing plates (20) are respectively installed above and below the side plate (16) on the right side, the inner ends of the two sets of screws (21) are respectively screwed through the outer sides of the two sets of fixing plates (20), are respectively screwed through the inner sides of the two sets of fixing plates (20), and are respectively connected with the two sets of clamping plates (22), the outer ends of the two sets of screws (21) are respectively provided with a limiting plate (23), and the rotating block (18) is located between the two sets of clamping plates (22).

4. The fixture positioning device for the water meter shell according to claim 3, wherein a positioning ring (24) is fixedly sleeved at the left end of the left transmission column (19), sliding wheel sets (25) are respectively arranged at the right side of the positioning ring (24) and the left side of the rotating block (18), the two sliding wheel sets (25) are respectively in close contact with the outer sides of the two sets of side plates (16), circular sliding grooves are respectively arranged on the inner side walls of the two sets of side plates (16), sliding blocks (26) can be rotatably fixed inside the two sets of circular sliding grooves, and the two sets of sliding blocks (26) are respectively and symmetrically arranged at the outer sides of the two sets of fixing plates (2).

5. The fixture positioning device of the water meter case as claimed in claim 4, wherein the connecting pipe comprises a second threaded pipe (27) and a second threaded rod (28), a second bearing seat is arranged at the right side of the fixing plate (2) at the left side, a second ball bearing is rotatably fixed in the second bearing seat, the left end of the second threaded pipe (27) is in interference fit with the second ball bearing, the left end of the second threaded rod (28) is inserted into and screwed into the right end of the second threaded pipe (27), and the right end of the second threaded rod (28) is connected with the left side of the clamping block (4) at the left side.

6. The fixture positioning device of the water meter shell as claimed in claim 5, further comprising two sets of outer connecting rods, two sets of second set springs (29), two sets of second retractable tubes and two sets of inner connecting rods, wherein the outer ends of the two sets of outer connecting rods are respectively installed inside the two sets of fixing plates (2), one ends of the two sets of second set springs (29) are respectively connected with the two sets of outer connecting rods, the other ends of the two sets of second set springs (29) are respectively connected with the two sets of inner connecting rods, one ends of the two sets of second retractable tubes are respectively connected with the two sets of outer connecting rods, the other ends of the two sets of second retractable tubes are respectively connected with the two sets of inner connecting rods, the two sets of second set springs (29) are respectively sleeved outside the two sets of second retractable tubes, and the two sets of inner connecting rods are respectively installed at.

7. The fixture positioning device for the water meter shell according to claim 6, further comprising two sets of third spring sets (30), two sets of third retractable tube sets and two sets of adjusting block sets (31), wherein one end of each of the two sets of third spring sets (30) is respectively installed inside the two sets of clamping blocks (4), the other end of each of the two sets of third spring sets (30) is respectively connected with the two sets of adjusting block sets (31), one end of each of the two sets of third retractable tube sets is respectively installed inside the two sets of clamping blocks (4), the other end of each of the two sets of third retractable tube sets is respectively connected with the two sets of adjusting block sets (31), and the two sets of third spring sets (30) are respectively installed outside the two sets of third retractable tube sets.