CN221280989U

CN221280989U - Accurate constant buret that medicine inspection detection center used

Info

Publication number: CN221280989U
Application number: CN202322518548.2U
Authority: CN
Inventors: 王帆
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-09-18
Filing date: 2023-09-18
Publication date: 2024-07-05
Anticipated expiration: 2033-09-18

Abstract

The utility model discloses a precision constant burette for a medicine inspection and detection center, which comprises a burette main body and a base, wherein both sides of the upper surface of the base are respectively provided with a first through hole, both ends of the first through hole are respectively provided with a second through hole, both sides of the first through hole are respectively provided with a first chute, both sides of the middle part of the upper surface of the base are respectively provided with a second chute, both sides of the upper surface of the base are respectively provided with a bracket, and both sides of the base are respectively provided with a first clamping component for clamping a table board.

Description

Accurate constant buret that medicine inspection detection center used

Technical Field

The utility model belongs to the technical field of constant burettes, and particularly relates to a precise constant burettes for a medicine inspection and detection center.

Background

The burette is a volume instrument for accurately discharging an indefinite amount of liquid, and is made of a slender and uniform glass tube, the tube is provided with scales, the lower end is provided with a sharp mouth, a throttle is arranged in the middle for controlling the titration speed, the color of the acid burette is generally red, the lower end is provided with a glass piston, and the piston is opened, so that the liquid can drop out from the tube.

The problems with the above techniques are: the burette is usually needed to be held by a worker with one hand when the burette is used, the speed of titration is controlled by one hand, the operation is inconvenient, and the quick positioning of the burette is inconvenient, so that a precise constant burette for a medicine inspection and detection center is provided.

Disclosure of utility model

Aiming at the problems in the prior art, the utility model provides a precision constant burette for a medicine inspection and detection center, which is provided with a first clamping component and a positioning component which can be adjusted by a worker to quickly and fixedly mount a base on a table plate when the burette is used, and then a second clamping component which can be adjusted by the worker to clamp a main body of the burette.

The utility model discloses a precise constant burette for a medicine inspection and detection center, which comprises a burette main body and a base, wherein first through holes are formed in two sides of the upper surface of the base, second through holes are formed in two ends of the first through holes, first sliding grooves are formed in two sides of the first through holes, second sliding grooves are formed in two sides of the middle of the upper surface of the base, supports are arranged on two sides of the upper surface of the base, first clamping components for clamping a table plate are arranged on two sides of the base, positioning components for positioning the first clamping components are arranged on two sides of the upper surface of the base, and second clamping components for clamping the burette main body are arranged on the supports.

As preferable, the first clamping assembly comprises four adjusting plates and four positioning plates, wherein the four positioning plates are respectively and slidably arranged in the first through hole, two sides of each positioning plate are fixedly provided with a sliding block, and the other side of each sliding block is slidably arranged in the first sliding groove.

As the preferable one of the utility model, one end of the adjusting plate is respectively provided with a bottom plate, the bottom plates are positioned on two sides of the lower surface of the base, the positioning plate is fixedly arranged in the middle of the lower surface of the base, two tension springs are fixedly arranged on two sides of the positioning plate, the other ends of the tension springs are respectively and fixedly connected with one side of the two bottom plates, and a clamping groove is formed in one side of the bottom plates.

As the preferable one of the utility model, one end of the adjusting plate is fixedly provided with a fixed plate, the fixed plate is fixedly provided with a handle, one side of the fixed plate is fixedly provided with a sliding plate, the sliding plate can slide in the second sliding groove, and the upper surface of the sliding plate is provided with a plurality of first threaded holes.

As the preferable mode of the utility model, the positioning component comprises two supporting frames, the two supporting frames are oppositely arranged on two sides of the upper surface of the base and are positioned at the upper end of the second sliding chute, threaded columns are arranged on the supporting frames in a threaded manner, and hand wheels are fixedly arranged at the upper ends of the threaded columns.

As the preferable mode of the utility model, the second clamping component comprises two first stabilizing blocks, two second stabilizing blocks and a bidirectional screw, wherein the first stabilizing blocks and the second stabilizing blocks are respectively arranged on the upper surface of the bracket, one end of one first stabilizing block is fixedly provided with a bearing seat, one end of the bidirectional screw penetrates through the other first stabilizing block and is fixedly arranged at one end of the bearing seat, the other end of the bidirectional screw is fixedly provided with a rotating wheel, one side of the rotating wheel is fixedly provided with a crank, a guide rod is fixedly arranged between the second stabilizing blocks, both sides of the bidirectional screw are respectively provided with a first sliding sleeve in a threaded manner, both sides of the guide rod are respectively provided with a second sliding sleeve in a sleeved manner, clamping blocks are fixedly connected between the first sliding sleeve and the second sliding sleeve, and the clamping blocks are oppositely arranged.

As the preferable mode of the utility model, one of the first stabilizing blocks is provided with a bolt in a threaded manner, one side of the rotating wheel is provided with a plurality of second threaded holes, the second threaded holes are arranged in a circular array, and one end of the bolt can be arranged in the second threaded holes in a threaded manner.

Compared with the prior art, the utility model has the following beneficial effects:

1. According to the buret body, the first clamping assembly can be adjusted by a worker through the design of the buret body, the base, the first through hole, the second through hole, the first sliding groove, the second sliding groove, the support, the first clamping assembly, the positioning assembly and the second clamping assembly, so that the first clamping assembly can be adjusted by the worker to clamp the table plate, then the positioning assembly can be adjusted by the worker to position the first clamping assembly, and then the second clamping assembly can be adjusted by the worker to clamp the buret body, the effect that the buret body can be quickly fixed on the table plate for use when in use is achieved, and the effect that the buret body can be used without manual support by the worker when in use is achieved, and the operation by the worker is facilitated is achieved.

2. According to the utility model, through the design of the first through hole, the first sliding groove, the first clamping assembly, the adjusting plate, the positioning plate and the sliding block, the sliding block synchronously slides in the first sliding groove when the adjusting plate slides in the first through hole, so that the effect of stabilizing the adjusting plate during position adjustment is achieved.

3. According to the utility model, through the design of the base, the adjusting plate, the positioning plate, the bottom plate, the tension spring and the clamping groove, the bottom plate can also be subjected to position adjustment at the lower end of the base when the adjusting plate is subjected to position adjustment, the tension spring can also be subjected to corresponding stretching degree when the bottom plate is subjected to position adjustment, the tension spring can drive the bottom plate to reset when the force for pulling the bottom plate is eliminated, the effects that the bottom plate can be subjected to position adjustment according to the requirement and the stability is also achieved when the position adjustment is performed are achieved, the effect that the tension spring can drive the bottom plate to reset when the force for pulling the bottom plate is eliminated is achieved, and the effect that the bottom plate can be installed at two ends of the table plate through clamping grooves in a clamping manner is achieved.

4. According to the utility model, through the design of the second sliding groove, the adjusting plate, the fixed plate, the handle, the sliding plate and the first threaded hole, when the first clamping assembly is used, a worker can pull the handle, when the handle is pulled, the fixed plate synchronously drives the sliding plate to slide in the second sliding groove, and when the fixed plate is used for position adjustment, the adjusting plate can also be used for position adjustment, so that the effect that when the handle is used for position adjustment, the adjusting plate and the sliding plate can also be used for position adjustment in a same step.

5. According to the utility model, through the design of the base, the second sliding groove, the positioning assembly, the supporting frame, the threaded column and the hand wheel, when the positioning assembly is used, a worker can rotate the hand wheel, and when the hand wheel is rotated, the threaded column can synchronously adjust the position on the supporting frame, so that the lower end of the threaded column can be installed in the first threaded hole in a threaded manner to fix the sliding plate.

6. According to the utility model, through the design of the second clamping assembly, the first stabilizing block, the second stabilizing block, the bearing seat, the bidirectional screw rod, the rotating wheel, the crank, the first sliding sleeve, the guide rod, the clamping block and the second sliding sleeve, when the second clamping assembly is used, a worker can rotate the crank, the rotating wheel can rotate when the crank is rotated, the bidirectional screw rod can rotate on the bearing seat when the rotating wheel rotates, the first sliding sleeve can synchronously carry out synchronous position adjustment on the bidirectional screw rod when the bidirectional screw rod rotates, the second sliding sleeve can also slide on the guide rod when the first sliding sleeve carries out position adjustment, and the clamping block can carry out synchronous position adjustment along with the first sliding sleeve and the second sliding sleeve, so that the effect that the worker can rotate the crank to carry out position adjustment on the clamping block and the clamping block can clamp a burette main body is achieved.

7. According to the utility model, through the design of the first stabilizing block, the rotating wheel, the second threaded hole and the bolt, when the rotating wheel rotates to a proper position, a worker can rotate the bolt which is arranged on the first stabilizing block in a threaded manner, so that one end of the bolt is arranged in the second threaded hole in a threaded manner, and the effect of positioning the rotating wheel is achieved.

Drawings

FIG. 1 is a schematic side perspective view of the overall structure of an apparatus according to an embodiment of the present utility model;

fig. 2 is a schematic bottom perspective view of the overall structure of the apparatus according to the embodiment of the present utility model;

FIG. 3 is a schematic perspective view of a device positioning assembly according to an embodiment of the present utility model;

Fig. 4 is a schematic perspective view of the overall structure of a first clamping assembly of the apparatus according to the embodiment of the present utility model;

Fig. 5 is a schematic perspective view of the overall structure of a second clamping assembly of the apparatus according to the embodiment of the present utility model.

In the figure: 1. a burette body; 2. a base; 3. a first through hole; 4. a second through hole; 5. a first chute; 6. a second chute; 7. a bracket; 8. a first clamping assembly; 801. an adjusting plate; 802. a positioning plate; 803. a slide block; 804. a bottom plate; 805. a tension spring; 806. a clamping groove; 807. a fixing plate; 808. a handle; 809. a sliding plate; 810. a first threaded hole; 9. a positioning assembly; 901. a support frame; 902. a threaded column; 903. a hand wheel; 10. a second clamping assembly; 1001. a first stabilizing block; 1002. a second stabilizing block; 1003. a bearing seat; 1004. a bidirectional screw; 1005. a rotating wheel; 1006. a crank; 1007. a first sliding sleeve; 1008. a guide rod; 1009. a clamping block; 1010. the second sliding sleeve; 1011. a second threaded hole; 1012. and (5) a bolt.

Detailed Description

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings.

The structure of the present utility model will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, the precision constant burette for a medicine inspection and detection center provided by the embodiment of the utility model comprises a burette main body 1 and a base 2, wherein both sides of the upper surface of the base 2 are provided with first through holes 3, both ends of the first through holes 3 are provided with second through holes 4, both sides of the first through holes 3 are provided with first sliding grooves 5, both sides of the middle part of the upper surface of the base 2 are provided with second sliding grooves 6, both sides of the upper surface of the base 2 are provided with brackets 7, both sides of the base 2 are provided with first clamping components 8 for clamping a table plate, both sides of the upper surface of the base 2 are provided with positioning components 9 for positioning the first clamping components 8, and the brackets 7 are provided with second clamping components 10 for clamping the burette main body 1.

The scheme is adopted: through buret main part 1, base 2, first through-hole 3, second through-hole 4, first spout 5, second spout 6, support 7, first clamping component 8, locating component 9 and the design of second clamping component 10, make buret main part 1 when using, first clamping component 8 is adjustable to the staff, make first clamping component 8 carry out the centre gripping to the table, then the staff adjusts locating component 9 and fixes a position first clamping component 8, then the staff can adjust second clamping component 10, thereby carry out the centre gripping to buret main part 1, reached buret main part 1 can fix the effect of using on the table fast when using, reached buret main part 1 need not the manual support of staff and can use when using, the effect of staff's operation of being convenient for.

Referring to fig. 3 and 4, the first clamping assembly 8 includes an adjusting plate 801 and positioning plates 802, the adjusting plate 801 is provided with four, the four positioning plates 802 are respectively slidably disposed in the first through hole 3, two sides of the positioning plates 802 are fixedly provided with sliding blocks 803, and the other sides of the sliding blocks 803 are slidably disposed in the first sliding groove 5.

The scheme is adopted: through the design of first through-hole 3, first spout 5, first clamping assembly 8, regulating plate 801, locating plate 802 and slider 803 for slider 803 also slides in first spout 5 in step when regulating plate 801 slides in first through-hole 3, has reached the effect of being more stable when regulating plate 801 position adjustment.

Referring to fig. 1 and 4, a bottom plate 804 is installed at one end of an adjusting plate 801, the bottom plate 804 is located at two sides of the lower surface of a base 2, a positioning plate 802 is fixedly installed in the middle of the lower surface of the base 2, two tension springs 805 are fixedly installed at two sides of the positioning plate 802, the other ends of the tension springs 805 are fixedly connected to one sides of the two bottom plates 804 respectively, and a clamping groove 806 is formed in one side of the bottom plate 804.

The scheme is adopted: through the design of base 2, regulating plate 801, locating plate 802, bottom plate 804, extension spring 805 and draw-in groove 806 for bottom plate 804 also can carry out position control at the base 2 lower extreme when regulating plate 801 carries out position control, and extension spring 805 also can carry out corresponding degree stretching when bottom plate 804 carries out position control, and extension spring 805 can drive bottom plate 804 when the power of pulling bottom plate 804 disappears and reset, has reached bottom plate 804 and can carry out position control as required and the effect that has stability equally when position control, has reached the effect that extension spring 805 can drive bottom plate 804 and reset when the power of pulling bottom plate 804 disappears, has reached the effect that bottom plate 804 accessible draw-in groove 806 joint is installed at the table both ends.

Referring to fig. 4, a fixing plate 807 is fixedly mounted at one end of an adjusting plate 801, a handle 808 is fixedly mounted on the fixing plate 807, a sliding plate 809 is fixedly mounted at one side of the fixing plate 807, the sliding plate 809 can slide in the second sliding groove 6, and a plurality of first threaded holes 810 are formed in the upper surface of the sliding plate 809.

The scheme is adopted: through the design of second spout 6, regulating plate 801, fixed plate 807, handle 808, sliding plate 809 and first screw hole 810 for first clamping component 8 when using, the staff can pull handle 808, and fixed plate 807 can drive sliding plate 809 simultaneously and slide in second spout 6 when handle 808 is pulled, and regulating plate 801 also can carry out position control when fixed plate 807 carries out position control, has reached handle 808 and has carried out position control's effect with sliding plate 809 also can step by step when regulating plate 801.

Referring to fig. 4, the positioning assembly 9 includes two supporting frames 901, the two supporting frames 901 are relatively installed on two sides of the upper surface of the base 2 and located at the upper end of the second chute 6, threaded columns 902 are installed on the supporting frames 901 in a threaded manner, and hand wheels 903 are fixedly installed at the upper ends of the threaded columns 902.

The scheme is adopted: through the design of base 2, second spout 6, locating component 9, support frame 901, screw thread post 902 and hand wheel 903 for locating component 9 when using, the staff can rotate hand wheel 903, and screw thread post 902 also can be synchronous carry out position control on support frame 901 when hand wheel 903 is rotated, thereby makes screw thread post 902 lower extreme threadably mounted at first screw hole 810 in carry out fixed effect to sliding plate 809.

Referring to fig. 1 and 5, the second clamping assembly 10 includes two first fixing blocks 1001, two second fixing blocks 1002 and a bidirectional screw 1004, where the first fixing blocks 1001 and the second fixing blocks 1002 are both installed on the upper surface of the bracket 7, one end of one first fixing block 1001 is fixedly installed with a bearing seat 1003, one end of the bidirectional screw 1004 penetrates through the other first fixing block 1001 and is fixedly installed at one end of the bearing seat 1003, the other end of the bidirectional screw 1004 is fixedly installed with a rotating wheel 1005, one side of the rotating wheel 1005 is fixedly installed with a crank 1006, a guide rod 1008 is fixedly installed between the second fixing blocks 1002, two sides of the bidirectional screw 1004 are both provided with a first sliding sleeve 1007 in a threaded manner, two sides of the guide rod 1008 are both sleeved with a second sliding sleeve 1007, a clamping block 1009 is fixedly connected between the first sliding sleeve and the second sliding sleeve 1010, and the clamping block 1009 is oppositely arranged.

The scheme is adopted: through the design of second clamping assembly 10, first firm piece 1001, second firm piece 1002, the bearing frame 1003, bi-directional screw 1004, runner 1005, crank 1006, first sliding sleeve 1007, guide bar 1008, clamping block 1009 and second sliding sleeve 1010, make the second clamping assembly 10 when using, the staff can rotate crank 1006, runner 1005 also can rotate when crank 1006 is rotated, bi-directional screw 1004 can rotate on the bearing frame 1003 when runner 1005 rotates, first sliding sleeve 1007 also can synchronous on bi-directional screw 1004 in the time of bi-directional screw 1004 rotates, second sliding sleeve 1010 also can slide on guide bar 1008 in the time of first sliding sleeve 1007 carries out the position adjustment, clamping block 1009 follows first sliding sleeve 1007 and second sliding sleeve 1010 and carries out synchronous position adjustment, the effect that the staff can rotate crank 1006 to the clamping block 1009, make clamping block 1009 can carry out the centre gripping to buret main part 1 has been reached.

Referring to fig. 5, a bolt 1012 is threadedly mounted on one of the first fixing blocks 1001, a plurality of second threaded holes 1011 are formed in one side of the rotating wheel 1005, the second threaded holes 1011 are arranged in a circular array, and one end of the bolt 1012 is threadedly mounted in the second threaded hole 1011.

The scheme is adopted: through the design of first firm piece 1001, runner 1005, second screw hole 1011 and bolt 1012 for the rotatable screw thread of staff installs the bolt 1012 on first firm piece 1001 when runner 1005 rotates suitable position, thereby makes bolt 1012 one end screw thread install in second screw hole 1011, has reached the effect of fixing a position runner 1005.

The working principle of the utility model is as follows:

When in use, a worker firstly moves the base 2 to the upper end of the desk plate, then the worker pulls the handle 808, the fixing plate 807 synchronously drives the sliding plate 809 to slide in the second sliding groove 6 when the handle 808 is pulled, the adjusting plate 801 synchronously performs position adjustment in the first through hole 3 when the fixing plate 807 performs position adjustment, the sliding block 803 synchronously slides in the first sliding groove 5 when the adjusting plate 801 slides in the first through hole 3, the bottom plate 804 also performs position adjustment at the lower end of the base 2 when the adjusting plate 801 performs position adjustment, the tension springs 805 also perform corresponding stretching when the bottom plate 804 performs position adjustment, when the bottom plate 804 is adjusted to the two ends of the desk plate, the worker releases the hand pulling the handle 808, and when the force pulling the bottom plate 804 disappears, the tension springs 805 can drive the bottom plate 804 to reset, so that the bottom plate 804 is clamped and installed at the two ends of the desk plate through the clamping grooves 806, if the first clamping component 8 is not required to be clamped and installed at two ends of the table, the base 2 can be directly placed on the table, when the base 804 is clamped and installed at two ends of the table through the clamping grooves 806, a worker rotates the hand wheel 903, the threaded column 902 synchronously performs position adjustment on the support frame 901 when the hand wheel 903 is rotated, so that the lower end of the threaded column 902 can be screwed in the first threaded hole 810 to fix the sliding plate 809, then the worker can rotate the crank 1006, the rotating wheel 1005 also rotates when the crank 1006 is rotated, the bidirectional screw 1004 rotates on the bearing seat 1003 when the rotating wheel 1005 rotates, the first sliding sleeve 1007 synchronously performs synchronous position adjustment on the bidirectional screw 1004 when the bidirectional screw 1004 rotates, the second sliding sleeve 1010 also slides on the guide rod 1008 when the first sliding sleeve 1007 performs position adjustment, and when the first sliding sleeve 1007 and the second sliding sleeve 1010 perform position adjustment, the clamping block 1009 follows the first sliding sleeve 1007 and the second sliding sleeve 1010 to carry out synchronous position adjustment, then the staff clamps the buret main body 1 through the clamping block 1009, when the clamping block 1009 clamps the buret main body 1, the staff can rotate the bolt 1012 which is screwed on the first stable block 1001, so that one end of the bolt 1012 is screwed in the second threaded hole 1011, and the clamping block 1009 is positioned.

To sum up: this accurate constant buret that medicine inspection detection center used, through foretell technical scheme, solved the buret that commonly used when using usually need the staff to hold the buret with one hand, a hand control titration's speed is inconvenient for carrying out the operation, the buret is inconvenient for carrying out the technical problem of quick location.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a precision constant buret that medicine inspection detected center used, includes buret main part (1) and base (2), its characterized in that: first through-hole (3) have all been seted up on base (2) upper surface both sides, second through-hole (4) have all been seted up at first through-hole (3) both ends, first spout (5) have all been seted up to first through-hole (3) both sides homogeneous phase, second spout (6) have all been seted up to base (2) upper surface middle part both sides homogeneous phase, support (7) are all installed relatively to base (2) upper surface both sides, base (2) both sides are provided with first clamping assembly (8) that are used for carrying out the centre gripping to the table, base (2) upper surface both sides are provided with locating component (9) that are used for carrying out the location to first clamping assembly (8), be provided with on support (7) and be used for carrying out second clamping assembly (10) of centre gripping to buret main part (1).

2. A precision constant burette for a drug testing center as in claim 1 wherein: the first clamping assembly (8) comprises four adjusting plates (801) and four positioning plates (802), the four positioning plates (802) are respectively and slidably arranged in the first through holes (3), sliding blocks (803) are fixedly arranged on two sides of each positioning plate (802), and the other sides of the sliding blocks (803) are slidably arranged in the first sliding grooves (5).

3. A precision constant burette for use in a drug testing center as in claim 2 wherein: bottom plate (804) are all installed to regulating plate (801) one end, bottom plate (804) are located base (2) lower surface both sides, locating plate (802) fixed mounting is in base (2) lower surface middle part, two extension springs (805) are all fixed mounting in locating plate (802) both sides, the other end of extension spring (805) fixed connection is in two bottom plate (804) one sides respectively, draw-in groove (806) have been seted up to bottom plate (804) one side.

4. A precision constant burette for use in a drug testing center as in claim 2 wherein: the utility model discloses a fixed plate, including fixed plate (807), fixed plate (807) one side all fixed mounting has sliding plate (809), sliding plate (809) can slide in second spout (6), a plurality of first screw hole (810) have all been seted up to sliding plate (809) upper surface.

5. A precision constant burette for a drug testing center as in claim 1 wherein: the positioning assembly (9) comprises two supporting frames (901), the two supporting frames (901) are oppositely arranged on two sides of the upper surface of the base (2) and located at the upper end of the second sliding groove (6), threaded columns (902) are arranged on the supporting frames (901) in a threaded mode, and hand wheels (903) are fixedly arranged at the upper ends of the threaded columns (902).

6. A precision constant burette for a drug testing center as in claim 1 wherein: the second clamping assembly (10) comprises two first stable blocks (1001), two second stable blocks (1002) and a bidirectional screw rod (1004), wherein the first stable blocks (1001) and the second stable blocks (1002) are all installed on the upper surface of a support (7), one of the first stable blocks (1001) is fixedly provided with a bearing seat (1003), one end of the bidirectional screw rod (1004) penetrates through the other first stable block (1001) and is fixedly installed at one end of the bearing seat (1003), the other end of the bidirectional screw rod (1004) is fixedly provided with a rotating wheel (1005), one side of the rotating wheel (1005) is fixedly provided with a crank (1006), a guide rod (1008) is fixedly installed between the second stable blocks (1002), two sides of the bidirectional screw rod (1004) are all provided with first sliding sleeves (1007) in a threaded mode, two sides of the guide rod (1008) are all sleeved with second sliding sleeves (1010), and clamping blocks (1009) are fixedly connected between the first sliding sleeves (1007) and the second sliding sleeves (1010) in a sleeved mode, and the clamping blocks (1009) are relatively arranged.

7. A precision constant burette for a drug testing center of claim 6 wherein: one of the first stabilizing blocks (1001) is provided with a bolt (1012) in a threaded mode, one side of the rotating wheel (1005) is provided with a plurality of second threaded holes (1011), the second threaded holes (1011) are arranged in a circular array, and one end of the bolt (1012) can be arranged in the second threaded holes (1011) in a threaded mode.