CN101847845B

CN101847845B - Lead clamping device

Info

Publication number: CN101847845B
Application number: CN2010101892953A
Authority: CN
Inventors: 葛建华
Original assignee: CHANGSHU POWER MACHINERY Co Ltd
Current assignee: CHANGSHU POWER MACHINERY Co Ltd
Priority date: 2010-06-02
Filing date: 2010-06-02
Publication date: 2012-01-11
Anticipated expiration: 2030-06-02
Also published as: CN101847845A

Abstract

The invention relates to a lead clamping device which belongs to the technical field of construction apparatuses of power lines. The lead clamping device comprises a pincer body, a pincer seat, an upper pincer, a lower pincer, a first connecting rod, a second connecting rod and a towing ring, wherein the pincer body is provided with a connecting rod chute; one ends of the first connecting rod and the second connecting rod are connected to the connecting rod chute together with the towing ring, and the other ends are connected with one end of the pincer seat; the middle of the pincer seat is connected with a pivot of the upper pincer; the other end of the pincer seat is connected with the one end of the lower pincer; and the middle and the other end of the lower pincer are connected with a pivot of the pincer body. The lead clamping device is characterized in that cross sections of an upper pincer cavity of the upper pincer and a lower pincer cavity of the lower pincer are in semicircular cavity shapes; a power assisting device is configured between the first connecting rod and the second connecting rod; the base of a first pincer seat pin is provided with a reinforcing hook shaft head; the reinforcing hook shaft head extends out of one side of the upper pincer in the length direction; the base of a second pincer seat pin is provided with a hook groove; and a reinforcing hook is arranged on the reinforcing hook shaft head and matched with the hook groove. The lead clamping device can not cause lead deformation and a lead sliding phenomenon, lightens the labor intensity of operators, protects the upper pincer and the lower pincer and has an integral closing effect on the upper pincer and the lower pincer.

Description

Lead clamping device

Technical field

The invention belongs to power line construction technique with the apparatus field, be specifically related to a kind of lead clamping device.

Background technology

Such as those of skill in the art the reason of knowledge, lead clamping device is in facing anchor and stringing operation, to play clamping wire in the power transmission and transformation overhead line construction and the indispensable instrument that bears tension force.Report about lead clamping device in patent documentation is few; Typical in the disclosed kiss-coating lead clamping device of Chinese utility model patent Granted publication CN201048251Y; This patent scheme is in the clamp groove of upper and lower jaw, rubber layer to be set; That is to say on the surface of the clamp groove of upper and lower jaw respectively to cover the rubber layer that a layer thickness is about 2mm, use and avoid upper and lower jaw to undermine the surface of lead.Can know from the description on the background technology hurdle of this patent; The surface of the upper and lower jaw of the lead clamping device in the prior art all is processed with anti-skidding line; Though anti-skidding line can play the effect of clamping lead reliably; But be prone to cause by the damage of folder conductive line surfaces, and degree of injury is difficult to be controlled at the regulation requirement of CNS GB50233-2005.Know that according to the applicant the line distance of anti-skidding line is usually at 1-1.2mm, the degree of depth is 18-22 μ m.

Should, above-mentioned utility model patent scheme has not still existed for the effect of reliably clamping lead to preventing that undermining conductive line surfaces has positive effect, thereby has the phenomenon of attending to one thing and lose sight of another.At present the scheme generally admitted of industry is that die cavity with upper and lower jaw is processed into ellipse; The shape of cross section of the die cavity that promptly is made up of jointly upper and lower jaw is designed to ellipse, when shape of cross section is circular lead after for example steel reinforced aluminium conductor is inserted upper and lower jaw, under the effect of tractive effort; By upper and lower jaw lead is changed into ellipse; That is to say, force the rounded lead of original shape of cross section to change shape for oval, consistent with the die cavity of upper and lower jaw.So structure can be at the anti-skidding line of upper and lower jaw Surface Machining, thereby can not undermine the surface of lead, still; The same problem of attending to one thing and lose sight of another that exists; Because the geometry of lead is changed, roundness receives artificial destruction, so these means can only be the technological means of doing something against one's will.Yet the applicant thinks, the Cross-section Design ovalisation of the die cavity that will be made up of jointly upper and lower jaw is sheerly due to the technological prejudice, and substantial relief effect is not played in the raising of clamping effect of lead.

In addition; After removing tractive effort, promptly accomplish as described above face operations such as anchor and stringing after, upper and lower jaw is opened and make fixing-line device move apart lead; Perhaps claim; Make lead withdraw from upper and lower jaw, and the action of the opening of upper and lower jaw is artificially accomplished by the workmen, thereby workmen's labour intensity is bigger and slow in one's movements.Have the unitary closed effect of upper and lower jaw also not make us as one wishes again, it is good often to exist towards an end closure effect of tractor (pull rope), and it is slightly inferior to deviate from the closure effect of an end of tractor.

In view of the existing deficiency of lead clamping device in the above-mentioned prior art, the applicant thinks and is necessary to improve that the technical scheme that will introduce below produces under this background.

Summary of the invention

Task of the present invention be to provide a kind of can guarantee lead had good clamp effect and avoid slippage; Can bit be helped again to open effect and use the working strength that alleviates the operating personnel, can also guarantee the lead clamping device of upper and lower jaw unitary closed effect.

Task of the present invention is accomplished like this; A kind of lead clamping device; Comprise caliper, pincers seat, upper and lower pincers, first, second connecting rod and bail; Caliper has a connecting rod chute, and an end of first connecting rod and second connecting rod takes that bail is coaxial to be connected on the connecting rod chute, and coaxial connection of an end of the other end of first connecting rod and second connecting rod and pincers seat; The middle part of pincers seat is through first pincers seat pin and the last pincers pivotal connection; The other end that clamps seat passes through the second pincers seat pin and is connected with an end pivoting that clamps down, and the middle part of following pincers and the other end clamp pin and caliper pivotal connection under one group, be characterised in that: the upward pincers chamber of said upward pincers and the shape of cross section in said following pincers chamber of clamping down are semicircle chamber; Dispose a power assisting device between described first, second connecting rod, this power assisting device matches with described pincers seat; The base portion of the described first pincers seat pin has one and strengthens the hook spindle nose; This reinforcement hook spindle nose leans out a described side that goes up the length direction of pincers; The base portion of the described second pincers seat pin has a hook groove, and described reinforcement hook spindle nose is provided with one and strengthens hook, and this reinforcement hook matches with said hook groove.

In a concrete embodiment of the present invention, described power assisting device comprises torsion axis, torsion spring, torsion spring pin backing pin and torsion spring pin retaining groove, and an end of torsion axis is fixed on the first connecting rod; The other end is fixed on second and connects, and torsion spring is nested with the middle part at torsion axis, and between first, second connecting rod; One end of torsion spring pin backing pin is fixed on the first connecting rod; The other end is fixed on the second connecting rod, and torsion spring pin retaining groove is opened on the described pincers seat, wherein; The first torsion spring pin of torsion spring is kept out on described torsion spring pin backing pin, and the second torsion spring pin of torsion spring is then kept out in described torsion spring pin retaining groove.

In another concrete embodiment of the present invention, an end of described reinforcement hook has one and strengthens dog hole, and the other end has a crotch, strengthen dog hole and be placed on the described reinforcement hook spindle nose, and crotch and described hook groove mutually hook join.

In another concrete embodiment of the present invention, the central authorities of the end face of described reinforcement hook spindle nose offer the back-up ring screw hole, on the back-up ring screw hole, are furnished with a back-up ring screw, and on the back-up ring screw, are arranged with a back-up ring, and back-up ring and described reinforcement clasp joint touch.

In another concrete embodiment of the present invention; Described caliper is clamping and is descending a side of pincers to offer an alignment pin guide and limit groove on described; The described pincers of going up are installed with an alignment pin at the end towards said bail, and this alignment pin is insinuated in the alignment pin guide and limit groove.

Also have among the concrete embodiment of the present invention, described alignment pin guide and limit groove is blind groove, and shape is circular arc.

more of the present invention and among concrete embodiment, be embedded with a spring coil in the described reinforcement dog hole.

In of the present invention and then concrete embodiment, the global shape of described bail takes the shape of the letter U.

Technical scheme provided by the invention is owing to overcome the prejudice in the prior art; The shape of cross section in upper and lower pincers chamber all is designed to semicircle chamber; Can not cause the lead distortion for the lead of circle matches with shape of cross section, and the lead sliding phenomenon can not occur; The direction motion that power assisting device can make first, second connecting rod and pincers seat draw in towards each other after removing the active force of external force to bail helps to make upper and lower pincers to open, thereby can alleviate the labour intensity of operating personnel's manual operation; Strengthen the setting of hook and can protect upper and lower pincers, can play the unitary closed effect of upper and lower pincers again.

Description of drawings

Fig. 1 is a concrete example structure figure of the present invention.

Fig. 2 is the application examples sketch map of Fig. 1.

Embodiment

For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present invention and beneficial effect more; The applicant general combines accompanying drawing to elaborate with the mode of embodiment below; But the description to embodiment all is not the restriction to the present invention program, any according to the present invention design done only for pro forma but not substantial equivalent transformation all should be regarded as technical scheme category of the present invention.

Ask for an interview Fig. 1; The shape of one caliper 1 trends towards zigzag or is referred to as font; With present location status shown in Figure 1 is example (as follows), offers a connecting rod chute 11 in the upper end of caliper 1, nearly middle part and offer towards a side of upper and

lower pincers

3,4 and be shaped as circular arc and the alignment pin guide and limit groove 12 that is blind groove that do not connect; Here the notion of being said that does not connect is meant that alignment pin guide and limit groove 12 does not extend through opposite side from a side of caliper 1; In addition, circular arc above-mentioned also can be regarded as crescent or banana-shaped, spaced apartly in the lower end of caliper 1 is provided with the following pincers pin through hole 13 that one group of quantity equates with the following quantity of pincers pin 42.One end of first connecting rod 5 is that the lower end of state shown in Figure 1 offers pin-and-hole 51; With example; End at second connecting rod 6 is that lower end shown in Figure 1 also offers position and aforesaid pin-and-hole 51 corresponding pin-and-hole (not shown)s; Penetrate the bail connecting hole 71 of bail 7 and the pin-and-hole on pin-and-hole 51 and the second connecting rod 6 with a connecting pin 511, thereby the lower end and the bail 7 of first, second connecting rod 5,6 jointly and coaxially is connected on the connecting rod chute 11 on the aforesaid caliper 1.When external force traction bail 7, take first, second connecting rod 5,6 by bail 7 and on connecting rod chute 11, slide.Aforesaid connecting pin 511 is located with the riveted mode, to avoid escape, promptly avoids breaking away from.The upper end of first, second connecting rod 5,6 is hinged with swivel pin 23 with an end of pincers seat 2, and the middle part of pincers seat 2 offers a kingpin hole 24, and the other end offers a pincers seat pin hole 25.The top of the long side direction of last pincers 3 is fixing with first nut 212 through the aforesaid kingpin hole of the first pincers seat pin, 21 insertions 24 backs; Constitute in the end of the side that leans out pincers 3 long side direction of the first pincers seat pin 21 and to strengthen hook spindle nose 211; And on the end face of this reinforcement hook spindle nose 211, offer a back-up ring screw hole 2111; Revolve on the back-up ring screw hole 2111 and join one piece of back-up ring screw 2112 that carries back-up ring 2113; Insert through hole 43 backs of clamping 4 one ends down and then be inserted into pincers seat pin hole 25 will descend pincers 4 and clamp seat 2 pivotal connections with the second pincers seat pin 22; And on the second pincers seat pin 22, revolve and second nut 222, limit in the following pincers pin through hole 13 that pincers pin 42 inserted on the aforesaid caliper 1 under the middle part of following pincers 4 and the other end passed through a group and with the 3rd nut 421.In the present embodiment, the quantity of pincers pin 42 is three under one group, and therefore the quantity of pincers pin through hole 13 also is three down.The effect of aforesaid alignment pin guide and limit groove 12 is that the alignment pin 32 that supplies to be located on the pincers 3 is inserted, and both can lead to alignment pin 32, again can be spacing to alignment pin 32.

The following pincers chamber 41 of going up pincers chamber 31 and following pincers 4 of last pincers 3 is the chamber of shape of cross section semicircular in shape; Both close up the back and form whole circular cavity; So chamber shape can adapt with the rounded lead 10 (Fig. 2 shows) of shape of cross section, thereby can not cause the distortion of lead.Yet in the prior art, owing to receive deep-rooted the influencing of traditional design theory, the shape of cross section of the common die cavity that constitutes is designed to ellipse after usually upper and

lower pincers chamber

31,41 being closed up, thereby causes lead 10 distortion.Therefore, the application has overcome the prejudice in the prior art, and through repetition test, circular cavity has the confining force no less than oval chamber equally to lead 10, and promptly lead 10 can not slide in the upper and

lower pincers chamber

31,41 of upper and

lower pincers

3,4.

Continue to see Fig. 1; At first, second connecting rod 5, be provided with a power assisting device 8 between 6; Preferred but not power assisting device 8 that be limited to comprises torsion axis 81, torsion spring 82, torsion spring pin backing pin 83 and torsion spring pin retaining groove 84, an end of torsion axis 81 is fixed with first connecting rod 5, specifically is on first connecting rod 3, to offer the first torsion spring axis hole 512; On second connecting rod 6 and offering the second torsion spring axis hole 61 equally corresponding to the position of the first torsion spring axis hole 512; One end of torsion axis 81 is inserted in the first torsion spring axis hole 512, and the other end is inserted in the second torsion spring axis hole 61, and torsion spring 82 is set in the middle part of torsion axis 81; The first torsion spring pin 821 of torsion spring 82 is kept out on torsion spring pin backing pin 83; And an end of torsion spring pin backing pin 83 is fixed on the first connecting rod 5, and the other end is fixed on the second connecting rod 6, and the fixed form that torsion spring pin backing pin 83 and first, second connecting rod 5,6 fix is with the description to torsion axis 81; The second torsion spring pin 822 of torsion spring 82 is kept out (i.e. supporting) on torsion spring pin retaining groove 84, and torsion spring pin retaining groove 84 is opened on the pincers seat 2.The bail 7 that takes the shape of the letter U when shape when removing tractive effort, just under the effect of torsion spring 82, the direction displacements that first, second connecting rod 5,6 and pincers seat 2 are drawn in towards each other, pincers 3 clamp 4 and scold out with following helps in, it is laborsaving to help to embody the operator.

The present invention program has also recommended one to strengthen hook 9; One end of this reinforcement hook 9 is that the upper end of present location status shown in Figure 1 has one and strengthens dog hole 91; And in strengthening dog hole 91, insert a spring coil 911; Strengthen dog hole 91 and match, and it is spacing to take 2111 pairs of reinforcement hooks 9 of back-up ring 2113 screw-in back-up ring screw holes by back-up ring screw 2112, deviate from from strengthening hook spindle nose 211 to avoid strengthening hook 9 with the reinforcement hook spindle nose 211 of the aforesaid first pincers seat pin 21; The other end of strengthening hook 9 promptly at present has a crotch 92 by lower end shown in Figure 1, and crotch 92 is joined with aforesaid hook groove 221 hooks that are formed on the second pincers seat pin 22, and promptly crotch 92 hooks together on hook groove 221.Be under the traction state at bail 7; Upper and

lower pincers

3,4 close up; Promptly go up pincers chamber 31 and clamp chamber 41 closures down, the lead 10 that will be arranged in upper and

lower pincers chamber

31,41 is clamped, at this moment; Reinforcement hook 9 can play and make pincers 3 and the effect of pincers 4 both unitary closed down, makes lead 10 integral body that are positioned at upper and

lower pincers chamber

31,41 stressed evenly.

Ask for an interview Fig. 2; Haulage cable 20 is connected with bail 9, and an end of lead 10 is inserted in the upper and

lower pincers chamber

31,41, under the traction of draw-gear (not shown); Driving lead clamping device of the present invention by haulage cable 20 moves to lead; By the upper and lower pincers of

lead clamping device

3,4 lead 10 is clamped simultaneously, with moving of whole fixing-line device, thereby completion is to the stringing of lead 10 or face anchor.

Claims

1. lead clamping device; Comprise caliper (1), pincers seat (2), upper and lower pincers (3,4), first, second connecting rod (5,6) and bail (7); Caliper (1) has a connecting rod chute (11); One end of first connecting rod (5) and second connecting rod (6) takes that bail (7) is coaxial to be connected on the connecting rod chute (11); And coaxial connection of an end of the other end of first connecting rod (5) and second connecting rod (6) and pincers seat (2), the middle part of pincers seats (2) is through the first pincers seat pins (21) and last pincers (3) pivotal connection, and the other end of pincers seats (2) is connected with an end pivoting that clamps (4) down through the second pincers seat pins (22); The middle part of following pincers (4) and the other end clamp pin (42) and caliper (1) pivotal connection under one group, it is characterized in that: said upward pincers chamber (31) and the said shape of cross section in the following pincers chamber (41) of pincers (4) down of going up pincers (3) is semicircle chamber; Described first, second connecting rod disposes a power assisting device (8) between (5,6), and this power assisting device (8) matches with described pincers seats (2); The base portion of the described first pincers seat pins (21) has one and strengthens hook spindle nose (211); This reinforcement hook spindle nose (211) leans out a described side that goes up the length direction of pincers (3); The base portion of the described second pincers seat pins (22) has a hook groove (221); Described reinforcement hook spindle nose (211) is provided with one and strengthens hook (9), and this reinforcement hook (9) matches with said hook groove (221).

2. lead clamping device according to claim 1; It is characterized in that described power assisting device (8) comprises torsion axis (81), torsion spring (82), torsion spring pin backing pin (83) and torsion spring pin retaining groove (84), an end of torsion axis (81) is fixed on the first connecting rod (5), and the other end is fixed on the second connecting rod (6); Torsion spring (82) is nested with the middle part in torsion axis (81); And be positioned between first, second connecting rod (5,6), an end of torsion spring pin backing pin (83) is fixed on the first connecting rod (5), and the other end is fixed on the second connecting rod (6); Torsion spring pin retaining groove (84) is opened on the described pincers seats (2); Wherein, the first torsion spring pin (821) of torsion spring (82) is kept out on described torsion spring pin backing pin (83), and the second torsion spring pin (822) of torsion spring (82) is then kept out in described torsion spring pin retaining groove (84).

3. lead clamping device according to claim 1; An end that it is characterized in that described reinforcement hook (9) has a reinforcement dog hole (91); The other end has a crotch (92); Strengthen dog hole (91) and be placed on the described reinforcement hook spindle nose (211), and crotch (92) and described hook groove (221) mutually hook join.

4. according to claim 1 or 3 described lead clamping device; The central authorities that it is characterized in that the end face of described reinforcement hook spindle nose (211) offer back-up ring screw hole (2111); On back-up ring screw hole (2111), is furnished with a back-up ring screw (2112); And on back-up ring screw (2112), be arranged with a back-up ring (2113), back-up ring (2113) contacts with described reinforcement hook (9).

5. lead clamping device according to claim 1; It is characterized in that described caliper (1) is clamping (3) and descending a side of pincers (4) to offer an alignment pin guide and limit groove (12) on described; The described pincers (3) of going up are installed with an alignment pin (32) at the end towards said bail (7), and this alignment pin (32) is insinuated in the alignment pin guide and limit groove (12).

6. lead clamping device according to claim 5 it is characterized in that described alignment pin guide and limit groove (12) is blind groove, and shape is circular arc.

7. lead clamping device according to claim 3 is characterized in that being embedded with in the described reinforcement dog hole (91) spring coil 911.

8. according to claim 1 or 5 described lead clamping device, it is characterized in that the global shape of described bail (7) takes the shape of the letter U.