CN206623030U - The spring fitting device of rack shaft assembly - Google Patents

The spring fitting device of rack shaft assembly Download PDF

Info

Publication number
CN206623030U
CN206623030U CN201720177848.0U CN201720177848U CN206623030U CN 206623030 U CN206623030 U CN 206623030U CN 201720177848 U CN201720177848 U CN 201720177848U CN 206623030 U CN206623030 U CN 206623030U
Authority
CN
China
Prior art keywords
connecting rod
pole socket
shaft assembly
rack shaft
rod portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201720177848.0U
Other languages
Chinese (zh)
Inventor
冯阳
李开强
代勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Huachuan Electric Parts Co Ltd
Original Assignee
Chengdu Huachuan Electric Parts Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Huachuan Electric Parts Co Ltd filed Critical Chengdu Huachuan Electric Parts Co Ltd
Priority to CN201720177848.0U priority Critical patent/CN206623030U/en
Application granted granted Critical
Publication of CN206623030U publication Critical patent/CN206623030U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Clamps And Clips (AREA)

Abstract

The spring fitting device of rack shaft assembly is the utility model is related to, including base, base are provided with the portion of presenting a theatrical performance as the last item on a programme, the portion of presenting a theatrical performance as the last item on a programme is provided with bottom outlet;Base is additionally provided with operation pole socket, in addition to first connecting rod portion, second connecting rod portion and third connecting rod portion, hinge connections are quadric chain;Second connecting rod portion is connected with lever, and third connecting rod portion is connected with pressure head portion, and pressure head portion is provided with apical pore;Quadric chain is additionally provided with second connecting rod stop portion and the operation pole socket fulcrum of cooperation, and when both contact, pressure head portion is closed position.In use, being moved by quadric chain band dynamic head portion, pressure head portion opens, rack axis bar, spring etc. are put into, pressing operation handle, pressure head portion closes, by spring-compressed, nut check can now be used, due to being provided with stop structure, the drafts in pressure head portion can be limited, and then ensures that each amount of spring compression is consistent, lever can use long handle rod member, make operation more laborsaving.

Description

The spring fitting device of rack shaft assembly
Technical field
The tool of component assembly is the utility model is related to, particularly the spring fitting device for rack shaft assembly.
Background technology
The rack shaft assembly of electric exterior swing door, including one section of long rod member, rod member one end are rack structure, and the other end is cylinder Shape, cylindrical end set have screw thread, are the end of thread.Rod member stage casing is further fixedly arranged on the back-up ring stretched out to side face periphery, Paired baffle plate is equipped between back-up ring and the end of thread, is the spring of compressive state between two baffle plates, and have nut check to exist The end of thread, by baffle plate and spring compression.
The spring installation procedure of above-mentioned rack shaft assembly, it is to load the parts such as baffle plate, spring on rod member, and locks Nut, because the device of spring stiffness coefficient that component is selected is big, spring is difficult to be compressed, very tired when above-mentioned operation carries out hand-manipulated Difficulty, and it is difficult to ensure that the amount of spring compression of each component is consistent.
Utility model content
Technical problem to be solved in the utility model is:A kind of spring fitting device of rack shaft assembly is provided, every time Operation can compress the spring into fixed position, improve the installation uniformity of component.
Technical scheme is used by the utility model solves its technical problem:
The spring fitting device of rack shaft assembly, including base, the base are provided with the portion of presenting a theatrical performance as the last item on a programme, and the portion of presenting a theatrical performance as the last item on a programme is set There is the bottom outlet for accommodating rack shaft assembly rack end, the bottom outlet size is less than rack shaft assembly back-up ring;
Base is additionally provided with operation pole socket, in addition to first connecting rod portion, second connecting rod portion and third connecting rod portion, the operation Pole socket, first connecting rod portion, second connecting rod portion and third connecting rod portion hinge connections are quadric chain, and it is double leval jib to operate pole socket The frame of mechanism, second connecting rod portion are the connecting rod of quadric chain;
The second connecting rod portion is connected with lever, and the third connecting rod portion is connected with pressure head portion, and the pressure head portion is set There is the apical pore for accommodating the rack shaft assembly end of thread, the apical pore size is less than rack shaft assembly overhead gage, and is more than rack The locking nut of shaft assembly;
The position being hinged on the operation pole socket and with first connecting rod portion is provided with operation pole socket fulcrum, and described second connects Bar portion is provided with the second connecting rod stop portion for coordinating with operation pole socket fulcrum, second connecting rod stop portion and operation pole socket branch Point portion overlaps perpendicular to the projection of be hinged direction of principal axis, is resisted against when the quadric chain is operated to second connecting rod stop portion Pole socket fulcrum is operated, the pressure head portion is closed position.
Further, the operation pole socket 2 and second connecting rod portion 4 are all platy structure, and operate pole socket and second connecting rod Portion overlaps perpendicular to the projection of be hinged direction of principal axis, in the second connecting rod portion and with third connecting rod portion pin joint where end For second connecting rod head, one end that the action bars seats against nearly second connecting rod portion is provided with groove for accommodating second connecting rod head, When the quadric chain is operated to second connecting rod head in the grooves, the pressure head portion is open position.
Further, when the second connecting rod stop portion is resisted against operation pole socket fulcrum, the first connecting rod portion and the Two link rod parts are run to the dead-centre position of quadric chain, and the seal face in pressure head portion is parallel with portion's seal face of presenting a theatrical performance as the last item on a programme, seal face Line direction it is consistent with rack shaft assembly end of thread length direction.
Further, the operation pole socket is locked on base by bolt, and is operated and also set up between pole socket and base There is at least one pad.
Further, the apical pore is elongated hole, and its length direction is be hinged axially vertical with the quadric chain;Institute State bottom outlet end edge and be more than bottom outlet along step groove, step groove sectional dimension is offered and fitted with rack shaft assembly lower baffle plate shape Match somebody with somebody, step groove is connected with breach.
Further, the base is provided with the hole for bolt locking.
The beneficial effects of the utility model are:Above-mentioned erecting device, lever can pass through quadric chain band dynamic head Portion moves, and when pressure head portion opens, can be put into rack axis bar, baffle plate, spring etc., pressing operation handle, then pressure head portion closes, And by spring-compressed, now worker can use nut check, because quadric chain is provided with stop structure, can limit four companies Linkage operating latitude, that is, the drafts in pressure head portion is limited, and then ensure that each amount of spring compression is consistent.Operated in preferred embodiment Handle can use long handle rod member, by lever principle, make operation more laborsaving.
Brief description of the drawings
Fig. 1 is erecting device schematic perspective view of the present utility model;
Fig. 2 is erecting device schematic front view of the present utility model;
Fig. 3 is the partial schematic diagram when pressure head portion of Fig. 2 embodiments is in an open position;
Fig. 4 is the partial schematic diagram when pressure head portion of Fig. 2 embodiments is in the closed position;
Reference is in figure:Base 1, portion 11 of presenting a theatrical performance as the last item on a programme, bottom outlet 111, step groove 112, breach 113, operation pole socket 2, pad Piece 21, groove 22, operation pole socket fulcrum 23, first connecting rod portion 3, second connecting rod portion 4, lever 41, second connecting rod stop portion 42nd, second connecting rod is first 43, third connecting rod portion 5, pressure head portion 51, apical pore 512, rack shaft assembly 6, spring 61, lower baffle plate 62, upper gear Plate 63, rack end 64, the end of thread 65, the first pin joint 71, the second pin joint 72, the 3rd pin joint 73, the 4th pin joint 74.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples:
The spring fitting device of rack shaft assembly, including base 1, the base 1 are provided with the portion of presenting a theatrical performance as the last item on a programme 11, the portion of presenting a theatrical performance as the last item on a programme 11 are provided with the bottom outlet 111 for accommodating rack shaft assembly rack end, and the size of bottom outlet 111 is less than rack shaft assembly back-up ring;
Base 1 is additionally provided with operation pole socket 2, in addition to first connecting rod portion 3, second connecting rod portion 4 and third connecting rod portion 5, institute State operation pole socket 2, first connecting rod portion 3, second connecting rod portion 4 and the hinge connections of third connecting rod portion 5 are quadric chain, and action bars Seat 2 is the frame of quadric chain, and second connecting rod portion 4 is the connecting rod of quadric chain;
The second connecting rod portion 4 is connected with lever 41, and the third connecting rod portion 5 is connected with pressure head portion 51, the pressure head Portion 51 is provided with the apical pore 512 for accommodating the rack shaft assembly end of thread, and the size of apical pore 512, which is less than on rack shaft assembly, keeps off Plate, and more than the locking nut of rack shaft assembly;
The position being hinged on the operation pole socket 2 and with first connecting rod portion 3 is provided with operation pole socket fulcrum 23, and described the Two link rod parts 4 are provided with the second connecting rod stop portion 42 for coordinating with operation pole socket fulcrum 23, second connecting rod stop portion 42 Overlap perpendicular to the projection of be hinged direction of principal axis with operation pole socket fulcrum 23, connect when the quadric chain is operated to second Bar stop portion 42 is resisted against operation pole socket fulcrum 23, and the pressure head portion 51 is closed position.
The spring that device of the present utility model is used for auxiliary rack shaft assembly is installed.Its structure as shown in Figure 1, 2, base 1 For forming stable support, it is preferred that can be that base 1 is additionally provided with the hole locked for bolt.Can be by whole device On workbench or frame.
Base 1 is provided with the portion of presenting a theatrical performance as the last item on a programme 11, portion 11 of presenting a theatrical performance as the last item on a programme be used to supporting rod member and the rod member back-up ring of rack shaft assembly with On baffle plate, the part such as spring.
Bottom outlet 111 is used for the rack end for accommodating rack shaft assembly, and its size is less than back-up ring, has made the rod member of rack shaft assembly It can be supported on the edge of bottom outlet 111.
As shown in Fig. 2 the bottom of rack shaft assembly 6 is rack end 64, in rack end insertion bottom outlet 111, spring is distinguished about 6 There is baffle plate, its lower baffle plate 62 is supported on back-up ring, and back-up ring is supported on the edge of bottom outlet 111.
Preferably, can be that the end edge of bottom outlet 111 edge offers step groove 112, the sectional dimension of step groove 112 is more than Bottom outlet 111 and with rack shaft assembly lower baffle plate formed be adapted to, step groove 112 is connected with breach 113.
As shown in Figure 1, 2, in use, the lower baffle plate 62 of rack shaft assembly can be just put into step groove 112, during operation Rack shaft module position is more firm, and opening up breach 113 can avoid baffle plate stuck in step groove 112.
The apical pore 512 in pressure head portion 51 is used for the end of thread 65 for accommodating the top of rack shaft assembly 6, and pressure head portion 51 is pressed down against Baffle plate 63 so that spring 61 compresses, the size of apical pore 512 be more than rack shaft assembly 6 locking nut, allow nut screw until Overhead gage 63 is pushed against, the rack shaft assembly for then also allowing for assembling takes out.
Device is provided with quadric chain band dynamic head portion 51 and opened and closed, as shown in Figure 1, 2, the behaviour on base 1 It is quadric chain to make pole socket 2, first connecting rod portion 3, second connecting rod portion 4 and the hinge connections of third connecting rod portion 5, is operation pole socket 2 be the frame of quadric chain, and its one end is hinged first connecting rod portion 3, and the other end of first connecting rod portion 3 is hinged second connecting rod portion 4 again, The other end of second connecting rod portion 4 is hinged third connecting rod portion 5, the other end of third connecting rod portion 5 other end of hinge operation pole socket 2 again again.On State in mechanism, second connecting rod portion 4 is the connecting rod of quadric chain, and first connecting rod portion 3 and third connecting rod portion 5 are quadric chain Side link.
Second connecting rod portion 4 is connected with lever 41 and is easy to device to operate, such as can be preferably a long pole conduct Lever 41, can be more laborsaving using lever principle, during spring-compressed, and lever 41 can also use other shapes, example The step shape for being such as easy to pin to step on.
Pressure head portion 51 is connected to third connecting rod portion 5, and when above-mentioned quadric chain is run, third connecting rod portion 5 is around itself and behaviour Make the pin joint rotation of pole socket 2 then can accordingly rotate with dynamic head portion 51, and pressure head portion 51 and portion 11 of presenting a theatrical performance as the last item on a programme coordinate realization to open With closing effect.
As shown in Figure 3,4, the position for operating on pole socket 2 and being hinged with first connecting rod portion 3 is provided with operation pole socket fulcrum 23, second connecting rod portion 4 is provided with second connecting rod stop portion 42, for coordinating with operation pole socket fulcrum 23 to limit double leval jib machine Structure operating range.
As shown in figure 3, be lifted up lever 41, cause third connecting rod portion 5 around the counterclockwise of the 4th pin joint 74, Two pin joints 72 raise up around the counterclockwise of the first pin joint 71, then pressure head portion 51, are increased with the distance in the portion of presenting a theatrical performance as the last item on a programme 11, now for Open position, rack shaft assembly to be mounted can be put into rigging position, be that rack end 64 is inserted in bottom outlet 111, in tooth The cylindrical end of bar shaft assembly loads the parts such as baffle plate, spring.
Then pressing operation handle 41, as shown in figure 4, cause third connecting rod portion 5 to be rotated clockwise around the 4th pin joint 74, the Two pin joints 72 rotate clockwise around the first pin joint 71, then pressure head portion 51 pushes, and reduce with the distance in the portion of presenting a theatrical performance as the last item on a programme 11, lever 41 pressures are resisted against operation pole socket fulcrum 23 until second connecting rod stop portion 42, and the now pressure of lever 41 action hinders Gear, the distance in pressure head portion 51 and the portion of presenting a theatrical performance as the last item on a programme 11 no longer changes, and is now closed position.
As shown in Fig. 2 when pressure head portion 51 closes, the end of thread 65 is just stretched into apical pore 512, the pressure of the downside in pressure head portion 51 Tightly apply in face of overhead gage 63 and be pressed down against, spring 61 is compressed, and the end of thread 65, to expose state, can hang in apical pore 512 Tight nut.Dependent on above-mentioned second connecting rod stop portion 42 and operation pole socket fulcrum 23, it can be ensured that each drafts is consistent, i.e., Be spring decrement it is consistent.
It is different according to the set-up mode of quadric chain, the form of second connecting rod stop portion 42 and operation pole socket fulcrum 23 Can also be different.Such as operation pole socket 2 and second connecting rod portion 4 are all platy structure, when being hinged, pole socket 2 and second connecting rod are operated The plate in portion 4 is located in Different Plane, be it is described operation pole socket 2 and second connecting rod portion 4 perpendicular to be hinged direction of principal axis projection not Overlap.Then second connecting rod stop portion 42 and operation pole socket fulcrum 23 can be designed as along be hinged axially extended portion Part, second connecting rod stop portion 42 and operation pole socket fulcrum 23 is allowed to be overlapped perpendicular to the projection of be hinged direction of principal axis, when four companies Linkage is run to certain position, then second connecting rod stop portion 42 stops with operating pole socket fulcrum 23 and being in contact, that is, hinders Only quadric chain continues to run with towards the direction.
Or the operation pole socket 2 and second connecting rod portion 4 are all platy structure, operate pole socket 2 and second connecting rod portion 4 hangs down Directly overlapped in the projection of be hinged direction of principal axis, can be as shown in figure 3, in the second connecting rod portion 4 in such a embodiment And with the pin joint of third connecting rod portion 5 where end be second connecting rod first 43, it is described operate pole socket 2 close to the one of second connecting rod portion 4 End is provided with the groove 22 for accommodating second connecting rod first 43,
Be operation pole socket 2 open up groove 22, when quadric chain to opening direction run, prevent operate pole socket 2 it is right Second connecting rod first 43 stops, when quadric chain running and operating first 43 is located in groove 22 to second connecting rod, then in pressure head portion 51 Raise, the pressure head portion 51 is open position.Pressing operation handle 41, until operation pole socket fulcrum 23 and second connecting rod stop portion 42 Contact, pressure head portion 51 is pushed until closed position.
Due to pressure head portion 51 carry out either on or off action when, apical pore 512 has vertical and lateral displacement simultaneously, thus more Preferably, can be that the apical pore 512 is elongated hole, its length direction be hinged axially vertical, machine with the quadric chain When structure is run, it can prevent the edge of apical pore 512 from jam occurs with nut.
Preferably, can be that described first connects when the second connecting rod stop portion 42 is resisted against operation pole socket fulcrum 23 Bar portion 3 and second connecting rod portion 4 are run to the dead-centre position of quadric chain, and the seal face in pressure head portion 51 compresses with the portion of presenting a theatrical performance as the last item on a programme 11 Face is parallel, and the line direction of seal face is consistent with rack shaft assembly end of thread length direction.
Be the rod size as shown in Fig. 2 by adjusting quadric chain, come realize second connecting rod stop portion 42 against When operating pole socket fulcrum 23, quadric chain is right up to dead point, is now a relatively steady state, linkage It is not easy to flick, is easy to hold spring, tightening nut.Now the seal face in pressure head portion 51 is parallel with the seal face of the portion of presenting a theatrical performance as the last item on a programme 11, compresses The line direction in face is consistent with rack shaft assembly end of thread length direction, be pressure head force direction it is consistent with spring direction.
Preferably, can be that the operation pole socket 2 is locked on base 1 by bolt, and operate pole socket 2 and base 1 it Between be additionally provided with least one pad 21.
As shown in Figure 1, 2, operation pole socket 2 is locked on base 1 by bolt, is set between operation pole socket 2 and base 1 Put, increase and decrease pad 21, for adjusting the height of linkage, that is, the initial distance in adjustment pressure head portion 51 and portion 11 of presenting a theatrical performance as the last item on a programme, It is possible thereby to adapt to the rack shaft assembly of different length specification.

Claims (6)

1. the spring fitting device of rack shaft assembly, including base (1), it is characterised in that the base (1) is provided with the portion of presenting a theatrical performance as the last item on a programme (11), the portion of presenting a theatrical performance as the last item on a programme (11) is provided with the bottom outlet (111) for accommodating rack shaft assembly rack end, bottom outlet (111) chi It is very little to be less than rack shaft assembly back-up ring;
Base (1) is additionally provided with operation pole socket (2), in addition to first connecting rod portion (3), second connecting rod portion (4) and third connecting rod portion (5), described operation pole socket (2), first connecting rod portion (3), second connecting rod portion (4) and third connecting rod portion (5) hinge connections are four companies Linkage, and the frame that pole socket (2) is quadric chain is operated, second connecting rod portion (4) are the connecting rod of quadric chain;
The second connecting rod portion (4) is connected with lever (41), and the third connecting rod portion (5) is connected with pressure head portion (51), described Pressure head portion (51) is provided with the apical pore (512) for accommodating the rack shaft assembly end of thread, and apical pore (512) size is less than rack Shaft assembly overhead gage, and more than the locking nut of rack shaft assembly;
The position being hinged on the operation pole socket (2) and with first connecting rod portion (3) is provided with operation pole socket fulcrum (23), described Second connecting rod portion (4) is provided with the second connecting rod stop portion (42) for coordinating with operation pole socket fulcrum (23), second connecting rod Stop portion (42) and operation pole socket fulcrum (23) overlap perpendicular to the projection of be hinged direction of principal axis, when the quadric chain Operating to second connecting rod stop portion (42) is resisted against operation pole socket fulcrum (23), and the pressure head portion (51) is closed position.
2. the spring fitting device of rack shaft assembly as claimed in claim 1, it is characterised in that the operation pole socket 2 and the Two link rod parts 4 are all platy structure, and it is mutual perpendicular to the projection of be hinged direction of principal axis to operate pole socket (2) and second connecting rod portion (4) Overlap, be second connecting rod head (43) on the second connecting rod portion (4) and with end where third connecting rod portion (5) pin joint, it is described Operation pole socket (2) is provided with the groove (22) for accommodating second connecting rod head (43) close to the one end in second connecting rod portion (4), works as institute State quadric chain and operate to second connecting rod head (43) and be located in groove (22), the pressure head portion (51) is open position.
3. the spring fitting device of rack shaft assembly as claimed in claim 1, it is characterised in that when the second connecting rod stop Portion (42) is resisted against operation pole socket fulcrum (23), the first connecting rod portion (3) and second connecting rod portion (4) operation to double leval jib machine The dead-centre position of structure, and the seal face of pressure head portion (51) is parallel with the portion of presenting a theatrical performance as the last item on a programme (11) seal face, the line direction of seal face and tooth Bar shaft assembly end of thread length direction is consistent.
4. the spring fitting device of rack shaft assembly as claimed in claim 1, it is characterised in that the operation pole socket (2) is logical Cross bolt to be locked on base (1), and operate and be additionally provided with least one pad (21) between pole socket (2) and base (1).
5. the spring fitting device of rack shaft assembly as claimed in claim 1, it is characterised in that the apical pore (512) is length Shape hole, its length direction are be hinged axially vertical with the quadric chain;Bottom outlet (111) the end edge edge offers step Groove (112), step groove (112) sectional dimension be more than bottom outlet (111) and with rack shaft assembly lower baffle plate shape adaptation, step groove (112) it is connected with breach (113).
6. the spring fitting device of rack shaft assembly as claimed in claim 1, it is characterised in that the base (1) is provided with Hole for bolt locking.
CN201720177848.0U 2017-02-27 2017-02-27 The spring fitting device of rack shaft assembly Active CN206623030U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720177848.0U CN206623030U (en) 2017-02-27 2017-02-27 The spring fitting device of rack shaft assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720177848.0U CN206623030U (en) 2017-02-27 2017-02-27 The spring fitting device of rack shaft assembly

Publications (1)

Publication Number Publication Date
CN206623030U true CN206623030U (en) 2017-11-10

Family

ID=60210693

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720177848.0U Active CN206623030U (en) 2017-02-27 2017-02-27 The spring fitting device of rack shaft assembly

Country Status (1)

Country Link
CN (1) CN206623030U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108044568A (en) * 2017-11-28 2018-05-18 德布森电气(上海)有限公司 A kind of assembly method of main spring press-in device
CN112026382A (en) * 2020-08-11 2020-12-04 重庆建筑工程职业学院 Manual stamping device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108044568A (en) * 2017-11-28 2018-05-18 德布森电气(上海)有限公司 A kind of assembly method of main spring press-in device
CN108044568B (en) * 2017-11-28 2019-06-21 德布森电气(上海)有限公司 A kind of assembly method of main spring press-in device
CN112026382A (en) * 2020-08-11 2020-12-04 重庆建筑工程职业学院 Manual stamping device

Similar Documents

Publication Publication Date Title
CN206623030U (en) The spring fitting device of rack shaft assembly
CN104018761A (en) Window with hinge assemblies capable of being hidden
CN205587891U (en) Car seat angle modulation ware welding frock
CN206830828U (en) A kind of self-locking air door with pressure relief device
US5361926A (en) Cover for centrifuge housing
CN213174798U (en) Connecting and locking device for building template
CN208887868U (en) A kind of integrated mechanical sealing static pressure pressure testing device
CN208880551U (en) A kind of quick lock in fixture for door closer debugging
CN108825576B (en) A kind of operation method of control pressurer system
CN208977699U (en) A kind of pre-buried wire box setting tool of PC component
CN202852004U (en) Triple eccentric hard seal butterfly valve
CN108386200B (en) Quick-opening gate of shield machine
CN209193342U (en) A kind of hydraulic-driven structure of metal plate plate vacuum suction crane charging equipment
CN220006593U (en) Sheet metal part welding positioning tool and welding tool system
CN202628696U (en) Connecting device for display units of light-emitting diode (LED) screen
CN110424715A (en) Scaffold clasp
CN207189060U (en) Binding clasp
CN205875988U (en) Cabinet support group spare for door
CN221265089U (en) But machine gland and tealeaves are kneaded to auto-lock
CN208992608U (en) One kind waving non-return butterfly valve shaft and splits out device
CN221826462U (en) Safety valve on-line detector
CN214228626U (en) Electric control box for underground tunneling equipment
CN214230569U (en) Novel quick installation handle for drawer
CN220648622U (en) Air valve fixing and protecting device for air conditioner outdoor unit
CN208453552U (en) A kind of sanitary towel packing machine centre-height regulating device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant