CN206775308U

CN206775308U - A kind of new electric pushrod

Info

Publication number: CN206775308U
Application number: CN201720679150.9U
Authority: CN
Inventors: 袁玉平
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-06-12
Filing date: 2017-06-12
Publication date: 2017-12-19
Anticipated expiration: 2027-06-12

Abstract

The utility model discloses a kind of new electric pushrod, and its cylinder barrel is fixed on frame, sets thrust shaft block above cylinder barrel to fill self-aligning thrust roller bearing, and thrust bearing cap and retaining ring for shaft shoulder are filled on thrust shaft block；Screw mandrel upper end is supported in self-aligning thrust roller bearing；Screw mandrel fills load-bearing nut above self-aligning thrust roller bearing supporting part, and screw mandrel is hung on cylinder barrel with nut check；Screw mandrel positions through flat key and speed reducer driving shaft；Mother nut is connected as a single entity by flat key and nut seat, nut seat with and hollow push rod be threadedly coupled and be integrated with screw lock, hollow push rod and mother nut are placed in cylinder barrel, and screw mandrel is placed in hollow push rod and mother nut；Screw mandrel bottom sets guide collar before screw mandrel, and it sets sliding sleeve and contacted with hollow push rod inwall；Guide sleeve before cylinder barrel bottom inwall is set, it is positioned at cylinder barrel with guiding gland, and hollow push rod bottom sets guidance tape and coordinated with preceding guide sleeve.The utility model is improved in terms of antifouling anti-corrosion or running stability.

Description

A kind of new electric pushrod

Technical field

It the utility model is related to straight line executing mechanism, more particularly to a kind of new electric pushrod.

Background technology

Electric pushrod is a kind of driven by power dress of straight reciprocating motion that the rotary motion of motor is changed into push rod Put.Common electric pushrod is Worm Wheel System form：Worm screw on motor gear drives worm gear wheel, makes small in worm gear Screw mandrel moves axially, and drives gag lever post accordingly to move axially by connecting plate, needed for during stroke, by adjusting limited block pressure Lower stroke switch powers off, and motor shuts down (positive revertive control is identical).This electric pushrod has one when being used to open and close workpiece Determine problem, such as：Sealing Shortcomings, cause antifouling and antiseptic effect not ideal enough；For another example, guiding mechanism, which is set, is present not Foot so that part operation is not steady enough；Etc..In view of this, it is necessary to which existing electric pushrod is improved.

Utility model content

For prior art presence the defects of, the purpose of this utility model is to provide a kind of new electric pushrod, To be improved in terms of antifouling anti-corrosion or running stability.

To solve above technical problem, the utility model provides a kind of new electric pushrod, including cylinder barrel, mother nut, Hollow push rod and screw mandrel；Cylinder barrel is fixed on frame by ring flange, and frame sets thrust shaft block to install in the top of cylinder barrel Self-aligning thrust roller bearing, thrust bearing cap is installed on thrust shaft block, and installed between thrust bearing lid and self-aligning roller bearing Retaining ring for shaft shoulder；The upper end of screw mandrel is supported in self-aligning thrust roller bearing；Screw mandrel is upper self-aligning thrust roller bearing supporting part Side's installation load-bearing nut, load-bearing nut are lock onto the upper end of screw mandrel by locking nut so that screw mandrel hangs on cylinder barrel；Screw mandrel leads to The power transmission shaft for crossing flat key and reductor is positioned；Mother nut is connected as a single entity by flat key and nut seat, nut seat with and it is hollow Push rod is threadedly coupled and locked with lock-screw so that mother nut turns into an entirety, hollow push rod and main spiral shell with hollow push rod Mother is placed in cylinder barrel, and screw mandrel is placed in hollow push rod and mother nut；Guide collar before the bottom setting screw mandrel of screw mandrel, screw mandrel are leading Sliding sleeve is set to snare to contact with the inwall of hollow push rod；Guide sleeve before cylinder barrel bottom inwall is set, it is leading to be oriented to pressure to applying mechanically Lid is positioned at cylinder barrel, and the bottom of hollow push rod sets guidance tape to coordinate with preceding guide sleeve.

Compared with prior art, convert rotational motion is straight by screw-driven pair by electric pushrod of the present utility model Line is moved, and the keying of workpiece is driven by push rod, and it is reasonably provided with guiding mechanism, has stable working, transmission efficiency, longevity Order the characteristics of long；The critical piece of the equipment uses closed type structure, thus anti-corrosion and antifouling capacity are strong, high lubricating effect.

Brief description of the drawings

Fig. 1 is the structure chart of the utility model electric pushrod；

Fig. 2 is the partial enlarged drawing of part A in Fig. 1；

Fig. 3 is the partial enlarged drawing of part B in Fig. 1.

Embodiment

For ease of understanding the utility model, it is described in detail below in conjunction with accompanying drawing and specific embodiment.

Referring also to Fig. 1~Fig. 2, wherein：Fig. 1 is the structure chart (saving motor and reductor) of electric pushrod；Fig. 2 is figure The partial enlarged drawing of part A in 1；Fig. 3 is the partial enlarged drawing of part B in Fig. 1.The electric pushrod and reductor (not shown) Drive connection, reductor are connected by shaft coupling (not shown) with motor (not shown), and motor is monophase machine or three-phase Motor, its it is forward and reverse rotate (controlling positive and negative rotation especially by external two-direction switch) when drive electric pushrod drive workpiece it is past Multiple motion, it is further explained below.

The utility model electric pushrod is optimized design, and it is full-enclosed structure；Reductor is hollow shaft Worm-gear speed reducer or bevel gear reducer, it is connected with electric pushrod for screw thread pair；Illustrate in further detail below.

As shown in FIG. 1 to 3, electric pushrod is main by cylinder barrel 126, mother nut 114, hollow push rod 116 and screw mandrel 117 etc. Part is formed, and wherein mother nut 114 and hollow push rod 116 are loaded in cylinder barrel 126 with being linked to be an entirety and closed, screw mandrel 117 inner chambers loaded on mother nut 114 and hollow push rod 116, and screw mandrel 117 is coordinated with mother nut 114 with screw thread, screw mandrel 117 and The output shaft drive connection of reductor, when screw mandrel 117 rotates under reductor drive, mother nut 114 and hollow push rod 116 1 Play the straight reciprocating motion in cylinder barrel 126.Wherein, screw mandrel 117 and mother nut 114 form screw-driven pair, and it is according to hoisting capacity It is different with speed is opened and closed, three kinds of trapezoidal screw, ball screw, planetary roller screw mandrel patterns can be used, it is further explained below.

As shown in FIG. 1 to 3, cylinder barrel 126 is fixed on frame (not shown) by ring flange, and frame is in the top of cylinder barrel Set thrust shaft block 103 to carry out installed thrust self-aligning roller bearing 107, thrust bearing cap 140 be installed on thrust shaft block 103, And retaining ring for shaft shoulder 135 is installed between thrust bearing lid 140 and self-aligning roller bearing 107, so to self-aligning roller bearing 107 preferably Carry out axial limiting；The upper end of screw mandrel 117 is supported in self-aligning thrust roller bearing 107；Screw mandrel 117 is in thrust force aligning Roller Shaft The top installation load-bearing nut 102 of 107 supporting parts is held, the load-bearing nut 102 lock onto the upper of screw mandrel 117 by locking nut 134 End so that screw mandrel 117 hangs on cylinder barrel 126, is consequently formed the apical support device of electric pushrod.

As shown in FIG. 1 to 3, the upper end of screw mandrel 117 is connected to the power transmission shaft of hollow shaft reducer, and screw mandrel 117 is logical The power transmission shaft for crossing flat key 101 and reductor is positioned, and such screw mandrel 117 can rotate in cylinder barrel 126；Mother nut 114 passes through Flat key 113 is connected as a single entity with nut seat 112, nut seat 112 with and hollow push rod 116 be threadedly coupled and locked with lock-screw 115 Tightly so that mother nut 114 turns into an entirety with hollow push rod 116, and hollow push rod 116 and mother nut 114 are placed in cylinder barrel 126 Interior, screw mandrel 117 is placed in hollow push rod 116 and mother nut 114, when screw mandrel 117 rotates, mother nut 114 and hollow push rod 116 Straight reciprocating motion can be done between the inwall of cylinder barrel 126；Thus, the motion of mother nut 114 and hollow push rod can drive hollow Head (not shown) is hung in the lower end extension connection of push rod 116, may finally drive workpiece motion s.

As shown in FIG. 1 to 3, the bottom of screw mandrel 117 sets guide collar 118 before screw mandrel, and guide collar 118 is arranged before screw mandrel Sliding sleeve 127 contacts with the inwall of hollow push rod 116；Guide sleeve 122 before the bottom inwall of cylinder barrel 126 is set, preceding guide sleeve 122 are used It is oriented to gland 131 and is positioned at cylinder barrel 126, the bottom of hollow push rod 116 sets guidance tape 128 to coordinate with preceding guide sleeve 122； The guider of electric pushrod is so formed, thereby guarantees that hollow push rod 116 is reciprocally steady, finally may be such that hollow push away Bar 116 smoothly promotes workpiece motion s.

As shown in FIG. 1 to 3, felt collar 109, the shaft shoulder portion of screw mandrel 117 are set between screw mandrel 117 and thrust bearing cap 140 Circlip for shaft 110 is set, the upper end joint gap of mother nut 114 and nut seat 112 sets circlip for hole 111, this Sample causes the top of electric pushrod to have good sealing.O-ring 129 is set between cylinder barrel 126 and preceding guide sleeve 122, it is preceding Guide sleeve 122 is provided with sealing ring 123 with hollow push rod 116, is oriented between gland 131 and hollow push rod 116 and sets flower bud shape close Seal 122 and dust-proof seal ring 132；In addition the bottom for being oriented to gland 131 sets scraping dirt circle 133 to prevent sludge from entering；It is hollow Hexagonal plug cock 130 in being set on the bottom of push rod 116, it may be necessary to which hexagonal plug cock 130 changes sump oil in opening；Pass through this A little measures form the sealer of electric pushrod, and it also has good sealing.

In above example, the end of hollow push rod 116 is provided with external screw thread, its screw in nut seat 112 and with screw 115 come It is fixed, thread looseness can be prevented, the outer surface of the hollow push rod 116 can use the techniques such as plating, spray painting or spray industrial ceramics to enter Row preservative treatment.

The utility model is described in detail above, the improvements and modifications that it is made are also considered as on this basis Fall into the protection domain of the utility model claims restriction.

Claims

1. a kind of new electric pushrod, it is characterised in that including cylinder barrel, mother nut, hollow push rod and screw mandrel；Cylinder barrel passes through method Blue disk is fixed on frame, and frame sets thrust shaft block to come installed thrust self-aligning roller bearing, thrust bearing in the top of cylinder barrel Thrust bearing cap is installed on seat, and retaining ring for shaft shoulder is installed between thrust bearing lid and self-aligning roller bearing；The upper end support of screw mandrel In self-aligning thrust roller bearing；Screw mandrel self-aligning thrust roller bearing supporting part top install load-bearing nut, load-bearing nut by Locking nut lock onto the upper end of screw mandrel so that screw mandrel hangs on cylinder barrel；Screw mandrel is entered by the power transmission shaft of flat key and reductor Row positioning；Mother nut is connected as a single entity by flat key and nut seat, nut seat with and hollow push rod be threadedly coupled and use lock-screw Locking so that mother nut turns into an entirety with hollow push rod, and hollow push rod and mother nut are placed in cylinder barrel, and screw mandrel is placed in hollow In push rod and mother nut；The bottom of screw mandrel sets guide collar before screw mandrel, and screw mandrel is leading to set sliding sleeve and hollow push rod to snare Inwall contacts；Guide sleeve before cylinder barrel bottom inwall is set, it is leading to be oriented to gland and be positioned at cylinder barrel to applying mechanically, under hollow push rod End set guidance tape to coordinate with preceding guide sleeve.

2. new electric pushrod as claimed in claim 1, it is characterised in that be screw-driven between screw mandrel and mother nut Secondary, ball screw screw-driven pair or planetary roller wire rod thread transmission.

3. new electric pushrod as claimed in claim 1, it is characterised in that head is hung in extension connection in hollow push rod lower end.

4. new electric pushrod as claimed in claim 1, it is characterised in that hexagonal oil in being set on the bottom of hollow push rod Plug.

5. new electric pushrod as claimed in claim 1, it is characterised in that the outer surface of hollow push rod is carried out at anti-corrosion Reason.

6. new electric pushrod as claimed in claim 5, it is characterised in that the outer surface plating of hollow push rod, spray painting or Industrial ceramics.

7. new electric pushrod as claimed in claim 1, it is characterised in that reductor slows down for the worm and gear of hollow shaft Machine or bevel gear reducer.

8. new electric pushrod as claimed in claim 7, it is characterised in that reductor and electric pushrod are screw thread auxiliary driving Connection.

9. new electric pushrod as claimed in claim 1, it is characterised in that reductor passes through shaft coupling and motor connection.

10. the new electric pushrod as described in any one of claim 1~9, it is characterised in that the external two-direction switch of motor with Control positive and negative rotation.