CN2653864Y

CN2653864Y - Lopping machine expansion ink structure

Info

Publication number: CN2653864Y
Application number: CN 03274296
Authority: CN
Inventors: 刘景辰; 宋占军
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-05
Filing date: 2003-09-05
Publication date: 2004-11-10
Anticipated expiration: 2013-09-05

Abstract

The utility model discloses a cutting machine telescopic stick structure, solving the technical matters that the cutting machine telescopic stick is capable for freely shrinking, adjusting to an appropriate length, and then reliably locking. The utility model adopts the technical proposal as follows: a cutting machine telescopic stick structure comprises a front tube and a back tube, the anterior end of the front tube is connected with a head connecting handle, the back end of the front tube is connected with a forepart of positioning cap, and the back end of the positioning cap is capable for being provided with a slip way in the connection along the back tube axis, middle handles are arranged outside the front tube and the back tube, the back end of the middle handler is articulated with a locking trigger piece, a cam in one end of the locking trigger piece is contacted with a locking hold-down plate, the opposite face of the locking hold-down plate contacting with the cam is contacted with the outer surface of the back tube. Compared with the prior art, the back end of the positioning cap is capable for being provided with a slip way in the back tube along the back tube axis, the forepart of positioning cap is connected with the back end of the front tube, matching with the locking hold-down plate and the locking trigger piece, making the cutting machine telescopic stick freely shrinking and reliably locking.

Description

Beta pruning machine expansion link structure

Technical field

The utility model relates to a kind of beta pruning machine, particularly a kind of expansion link structure of beta pruning machine.

Background technology

The user is using the beta pruning machine to carry out in the process of work, and the needs that are subjected to different workplaces and carry, preserve usually need the length of whole bar portion is regulated, and can guarantee bar portion flexible place reliable lock in the course of the work, can not occur becoming flexible.In the past calibration rotates and locking usually need be by instrument, waits as spanner, screwdriver and realizes, has promptly wasted the time, has increased labour intensity again, and flexible may the generation of bar portion have some setbacks, and causes that bar portion is flexible insecure defective to occur.

Summary of the invention

The purpose of this utility model provides a kind of beta pruning machine expansion link structure, and the technical problem that solve is that beta pruning machine expansion link can freely stretch, adjust to suitable length after, can lock reliably.

The utility model is by the following technical solutions: a kind of beta pruning machine expansion link structure, pipe and back pipe before comprising, the front end of preceding pipe links to each other with the head conjugation handle, the rear end of pipe connects with the leading portion of a positioning cap before described, the back segment of positioning cap slidably is arranged on wherein along back tubular axis line, the outside of preceding pipe and back pipe is provided with mid-handle, the rear end of mid-handle is hinged with the locking trigger piece, the cam of locking trigger piece one end forms with the one side of locking pressure plate and contacts, and the locking pressure plate one side relative with the cam contact forms with the outer surface of back pipe and contact.

The leading portion circumferential size of the utility model positioning cap is less than the back segment circumferential size.

Before putting in, positioning cap leading portion of the present utility model in the pipe, manages in the hole of both sides before the buckle of positioning cap leading portion both sides is stuck in.

Mid-handle of the present utility model by can open and left mid-handle and right mid-handle form.

Have in the rear end of left mid-handle of the present utility model and right mid-handle and prevent that the positioning cap back segment from skidding off the muscle of back pipe.

There is a protrusion that can contact, stretch out backward with mid-handle at head conjugation handle of the present utility model rear portion.

Be provided with the damping pad in left mid-handle of the present utility model and the right mid-handle both sides.

The utility model compared with prior art, adopt positioning cap, its back segment slidably is arranged in the pipe of back along back tubular axis line, and leading portion connects with the rear end of preceding pipe, cooperate locking trigger piece and locking pressure plate on the mid-handle, beta pruning machine expansion link can freely be stretched and reliable locking.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the STRUCTURE DECOMPOSITION schematic diagram of Fig. 1.

Fig. 4 is the front view of the right mid-handle of the utility model embodiment.

Fig. 5 is the left view of Fig. 4.

Fig. 6 is the front view of the utility model embodiment left side mid-handle.

Fig. 7 is the right view of Fig. 6.

Fig. 8 is the front view of pipe behind the utility model embodiment.

Fig. 9 is the left view of Fig. 8.

Figure 10 is the front view of the utility model embodiment positioning cap.

Figure 11 is the A-A view of Figure 10.

Figure 12 is the front view that the utility model embodiment locks trigger piece.

Figure 13 is the vertical view of Figure 12.

Figure 14 is the front view of the utility model embodiment locking pressure plate.

Figure 15 is the left view of Figure 14.

Figure 16 is the front view of pipe before the utility model embodiment.

Figure 17 is the left view of Figure 16.

Embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.As Fig. 1, Fig. 2 and shown in Figure 3, beta pruning machine expansion link structure of the present utility model comprises right mid-handle 1, back pipe 2, positioning cap 3, left mid-handle 4, locking trigger piece 5, locking pressure plate 6, preceding pipe 7 and damping pad 8.The front end of preceding pipe 7 links to each other with the head conjugation handle, the rear end of back pipe 2 links to each other with back handle, the leading portion of positioning cap 3 puts in the back end of preceding pipe 7, manage in the hole of 7 both sides before the buckle of positioning cap 3 leading portion both sides is stuck in, the circumferential size of positioning cap 3 back segment exterior contours is greater than its leading portion circumferential size, suitable with back pipe 2 inside dimensions, and appropriate clearance is arranged, can in back pipe 2, be free to slide along its axis.Thread connection is adopted in right mid-handle 1 and left mid-handle 4 combination backs, the outside of pipe 7 and back pipe 2 before being arranged on, in its rear end, a muscle is respectively arranged, when elongation reaches maximum, positioning cap 3 front end faces contact with muscle, pipe 7 breaks away from back pipe 2 before preventing, there is a protrusion that stretches out backward at the conjugation handle rear portion, when elongation hour, anterior conjugation handle is collided with right middle handle 1 and left mid-handle 4, prevents to crush the user.Right mid-handle 1 and left mid-handle 4 rear ends are hinged with the locking trigger piece 5 of band handgrip, one cam is arranged at locking trigger piece 5 front end bottoms, the bottom of cam forms with the one side of locking pressure plate 6 and contacts, the relative one side of locking pressure plate 6 and cam contact is suitable with the external surface shape of back pipe 2 and form and contact, locking pressure plate 6 embeds in the groove of left and right sides mid-handle with the both sides of back tubular axis line parallel, and can move up and down along groove.For gaining in strength, 5 of trigger pieces of locking are metal shaft, are injected in the locking trigger piece 5.The free landing of expansion link produced large impact when preventing the vertical laying state of machine, respectively added two damping pads 8 in the both sides of right mid-handle 1 and left mid-handle 4, in telescopic process, produced reasonable feel.

Extremely shown in Figure 7 as Fig. 4, the middle inside of left side mid-handle 4 and right mid-handle 1 is respectively equipped with the groove 41 and 11 of placing damping pad 8, its rear portion also is respectively equipped with the groove 42 and 12 that embeds locking pressure plate 6, its rear upper end is provided with the hole 43 and 13 of hinged locking trigger piece 5, being connected of left side mid-handle 4 and right mid-handle 1 adopts screw to connect, which is provided with the screw pilot hole, in the rear end of left side mid-handle 4 and right mid-handle 1, a muscle is respectively arranged, be used for positioning cap 3 front end faces and contact with muscle, pipe 7 breaks away from back pipe 2 before preventing.

As Fig. 8 and shown in Figure 9, the tube wall of the relative both sides, end of back pipe 2 is provided with hole 21.

As shown in Figure 10 and Figure 11, the circumferential size of positioning cap 3 rear ends is greater than the circumferential size of front end, and there is buckle 31 less end both sides, the hole 21 of pipe 7 before being used for from inside to outside putting in, and pipe 7 before blocking, realization connects with preceding pipe 7.

As Figure 12 and shown in Figure 13, there are two coaxial cylinders 51 one end both sides of locking trigger piece 5, put in respectively in the hole 43 and 13 of left mid-handle 4 and right mid-handle 1, locking trigger piece 5 and mid-handle form hinged, and there is a cam 52 lower end, middle part between two cylinders 51.

As Figure 14 and shown in Figure 15, the shape of locking pressure plate 6 one side is suitable with the outer shape of back pipe 2, so as the cam 52 of locking trigger piece 5 when depressing this face closely contact with outer tube 2.

As Figure 16 and shown in Figure 17, the tube wall of the relative both sides, end of preceding pipe 7 is provided with hole 71, and the buckle 31 of being convenient to positioning cap 3 from inside to outside puts in the hole 71 of preceding pipe 7, pipe 7 before blocking.

Claims

1. beta pruning machine expansion link structure, pipe and back pipe before comprising, the front end of preceding pipe links to each other with the head conjugation handle, it is characterized in that: the rear end of pipe connects with the leading portion of a positioning cap before described, the back segment of positioning cap slidably is arranged on wherein along back tubular axis line, the outside of preceding pipe and back pipe is provided with mid-handle, the rear end of mid-handle is hinged with the locking trigger piece, the cam of locking trigger piece one end forms with the one side of locking pressure plate and contacts, and the locking pressure plate one side relative with the cam contact forms with the outer surface of back pipe and contact.

2. beta pruning machine expansion link structure according to claim 1, it is characterized in that: the leading portion circumferential size of described positioning cap is less than the back segment circumferential size.

3. beta pruning machine expansion link structure according to claim 2 is characterized in that: in the pipe, manage in the hole of both sides before the buckle of positioning cap leading portion both sides is stuck in before described positioning cap leading portion puts in.

4. beta pruning machine expansion link structure according to claim 3 is characterized in that: described mid-handle by can open and left mid-handle and right mid-handle form.

5. beta pruning machine expansion link structure according to claim 4 is characterized in that: have in the rear end of described left mid-handle and right mid-handle to prevent that the positioning cap back segment from skidding off the muscle of back pipe.

6. beta pruning machine expansion link structure according to claim 5 is characterized in that: there is a protrusion that can contact, stretch out backward with mid-handle at described head conjugation handle rear portion.

7. beta pruning machine expansion link structure according to claim 6 is characterized in that: be provided with the damping pad in described left mid-handle and the right mid-handle both sides.