CN209767004U - Net sealing device and net sealing tackle thereof - Google Patents

Abstract

the utility model discloses a block device and block coaster thereof, it includes: a mounting frame; the guide wheel is rotatably arranged on the mounting rack and used for rolling on the main rope; the pulley is rotatably mounted on the mounting frame, the pulley is matched with the guide wheel and can wrap the main rope, and the pulley can rotate relative to the guide wheel in the moving direction of the main rope; the supporting rod hanging plate is rotatably installed on the installation frame, and installation holes for installing safety buckles are formed in two ends of the supporting rod hanging plate. Through setting up pulley and guide pulley to through the cooperation of pulley and guide pulley, and the pulley is guaranteed pulley and guide pulley real-time cooperation cladding main rope along with main rope swing, guaranteed good guidance quality, thereby realize preventing the coaster walking in-process beat, sting the problem of rope, reduced the frictional force between coaster and the main rope, in addition, the guide pulley can be with the impact load dispersion of wire, walking board, guarantees main rope safety.

Description

Net sealing device and net sealing tackle thereof

Technical Field

the utility model relates to a technical field of block, in particular to block device and block coaster thereof.

background

In the process of power transmission line engineering construction, the phenomenon of crossing over the high-voltage or ultrahigh-voltage power transmission line which is put into operation cannot be avoided; in addition, with the rapid expansion of the highway network in China, the situations of stringing construction across the high-speed railway and other electrified railways in the operation and maintenance processes of newly-built transmission lines and original lines are more and more, and if effective safety measures are not taken, the safety of railway power supply touch net is endangered, and serious social influence is caused. The method commonly adopted in the industry is to set up a crossing frame and a safety protection net, namely, a safety protection net with a certain width is set up above a safety distance above a crossed line and facilities, and even if extreme conditions occur in the construction process, the safety protection net can support the crossed line and the facilities under the accident condition that leads accidentally fall, so that the crossed objects are effectively protected. The current commonly used net blocking pulleys include "spectacle pulleys" and "profile rings".

However, the weight of the glasses pulley is large, so that the weight of the whole insulating net is too large, the deflection of the span center of the main rope is too large, the tension of the main rope is greatly improved, the main rope still cannot meet the safety distance between the main rope and a spanned object, the insulating net is difficult to pull, and the construction efficiency and the safety of the main rope are seriously influenced; the tackle is too long, namely the distance between a hanging ring at the bottom of the tackle and a pulley at the top of the tackle is too large, and transverse and longitudinal loads borne in the drawing process are easy to generate eccentricity and deflection, so that the left and right net pulling ropes are unbalanced in stress, the net sealing device is possibly clamped when being pulled to a half, the construction efficiency is influenced, friction is generated between the tackle bracket and the main rope, and larger resistance is formed.

Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide a blocking tackle to prevent the problem of deflection and reduce the friction force.

SUMMERY OF THE UTILITY MODEL

in view of this, the utility model aims at providing a block coaster to prevent the problem of beat, thereby reduce frictional force. Another object of the utility model is to provide a block device of having above-mentioned block coaster.

in order to achieve the above object, the utility model provides a following technical scheme:

a block, comprising:

A mounting frame;

The guide wheel is rotatably arranged on the mounting rack and used for rolling on the main rope;

The pulley is rotatably mounted on the mounting frame, the pulley is matched with the guide wheel and can wrap the main rope, and the pulley can rotate relative to the guide wheel in the direction of movement of the main rope;

The supporting rod hanging plate is rotatably installed on the installation frame, and installation holes for installing safety buckles are formed in two ends of the supporting rod hanging plate.

Preferably, in the block, the mounting frame includes:

the guide wheel can be rotatably erected on the two transverse rib plates;

the bracket is of a U-shaped structure, and two ends of the bracket are respectively rotatably connected with one transverse rib plate;

The vertical rib plate is fixedly connected with one end of the bracket;

the detachable vertical rib plate is fixedly connected with the other end of the support, and the pulley and the stay bar hanging plate are rotatably erected between the vertical rib plate and the detachable vertical rib plate.

Preferably, in the block, the separable vertical rib plate includes:

the hinge rib plates are used for erecting the pulleys and the stay bar hanging plates;

And the first end of the hinge is rotatably connected with the hinge rib plate, the second end of the hinge is detachably connected with the bracket, and the distance from the first end of the hinge to the axis of the pulley is less than the radius of the pulley.

preferably, in the block, the hinge is connected to the bracket through a self-resetting elastic latch, and the self-resetting elastic latch includes:

The fixing sleeve is fixed on the bracket;

The hinge pin can abut against the hinge for limiting, the fixed sleeve is sleeved outside the hinge pin, and the hinge pin can move along the axis direction;

The shifting piece is connected with one end, far away from the loose-leaf, of the pin shaft;

The spring is positioned in the fixed sleeve and connected with the pin shaft, and the pin shaft is separated from the hinge when the spring is compressed.

preferably, in the blocking pulley, the loose-leaf rib plate and the vertical rib plate are respectively provided with a kidney-shaped hole for adjusting the distance between the pulley and the guide wheel, and the pulley is rotatably erected in the kidney-shaped hole.

preferably, in the above-mentioned block, the pulley is mounted on a pulley shaft, and the pulley shaft is slidably erected in the kidney-shaped hole through a slot nut.

Preferably, in the blocking tackle, sleeves are fixed to the vertical rib plates and the loose-leaf rib plates, and the circumferential surfaces of the sleeves are provided with L-shaped through holes;

Positioning pins are arranged in the sleeves, the positioning pins are provided with shifting rods penetrating through the L-shaped through holes, and one ends of the positioning pins can abut against the clamping groove nuts;

And a return spring is arranged between the bottom of the sleeve and the positioning pin.

preferably, in the blocking pulley, the guide wheel includes a front guide wheel, a middle guide wheel and a rear guide wheel, the center line of which is on the same horizontal plane, the middle guide wheel is rotatably erected between the separable vertical rib plate and the vertical rib plate, the diameters of the front guide wheel, the middle guide wheel and the rear guide wheel are the same, and the diameter of the pulley is larger than that of the middle guide wheel.

Preferably, in the block, the guide wheel and the pulley are nylon wheels, and grooves for guiding the main ropes are formed in outer sides of the guide wheel and the pulley.

A block device, includes the block coaster, wherein, the block coaster is any one of the block coaster of the aforesaid.

according to the technical scheme provided by the utility model, the utility model discloses a block coaster is through setting up pulley and guide pulley to through the cooperation of pulley and guide pulley, and the pulley is guaranteed pulley and guide pulley real-time cooperation cladding main rope along with the main rope swing, has guaranteed good guidance quality, thereby realizes preventing the problem of coaster walking in-process beat, sting the rope, has reduced the frictional force between coaster and the main rope, and in addition, the guide pulley can be with the wire, the impact load dispersion of walking board, ensures main rope safety.

drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

fig. 1 is a schematic structural view of a block disclosed in an embodiment of the present invention;

Fig. 2 is a front view of a block disclosed in an embodiment of the present invention;

FIG. 3 is a schematic view of the structure in the direction AA in FIG. 2;

FIG. 4 is a schematic view of the structure in the BB direction in FIG. 2;

fig. 5 is an exploded view of a block disclosed in an embodiment of the present invention;

fig. 6 is a schematic structural view of the blocking tackle disclosed in the embodiment of the present invention after the pulley rotates relative to the guide wheel;

fig. 7 is a schematic structural view of a self-resetting elastic lock catch of the blocking tackle disclosed in the embodiment of the present invention;

Fig. 8 is a schematic structural view of the self-restoring elastic lock of the blocking tackle in the embodiment of the present invention after being opened;

Fig. 9 is a schematic structural view of the net blocking pulley disclosed in the embodiment of the present invention after the loose-leaf rotates;

Fig. 10 is a schematic structural view of the net blocking tackle disclosed in the embodiment of the present invention after the loose leaf is locked;

Fig. 11 is a schematic structural view of the blocking tackle according to the embodiment of the present invention at the highest position;

fig. 12 is a schematic structural view of the application of the blocking tackle disclosed in the embodiment of the present invention.

Detailed Description

In view of this, the core of the present invention is to provide a block for blocking a net to prevent the problem of deflection, thereby reducing the friction. Another core of the utility model is to provide a block device with the block coaster.

In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.

as shown in fig. 1-12, the utility model discloses a block pulley, including mounting bracket, guide pulley, pulley 26 and vaulting pole link plate 25, wherein, the equal rotatable installation on the mounting bracket of guide pulley and pulley 26, and vaulting pole link plate 25 is fixed on the mounting bracket. The guide wheel is used for supporting and guiding the pulley in the rotating process, the pulley 26 is used for being matched with the guide wheel to coat the main rope, in addition, the pulley 26 can rotate relative to the guide wheel, particularly, the pulley 26 rotates towards the direction of moving on the main rope, the pulley 26 can be matched with the guide wheel in real time, and therefore deflection and rope biting in the traveling process of the pulley are effectively prevented. The two ends of the stay bar hanging plate 25 are provided with mounting holes for mounting the safety buckles 31, and the stay bar hanging plate can be used for connecting an insulating stay bar, a connecting rope, a net retracting rope or a net pulling rope when working. Set up pulley 26 and guide pulley in this application to through the cooperation of pulley 26 with the guide pulley, and pulley 26 guarantees pulley 26 and the real-time cooperation cladding main rope of guide pulley along with the main rope swing, has guaranteed good guidance quality, thereby realizes preventing coaster walking in-process beat, stings the problem of rope, has reduced the frictional force between coaster and the main rope, and in addition, the guide pulley can be with the impact load dispersion of wire, walking board, ensures main rope safety.

In a further embodiment, the mounting frame includes: the transverse rib plates 11, the brackets 3, the vertical rib plates 30 and the separable vertical rib plates. Wherein, the guide wheel is rotatably erected on the two transverse rib plates 11; the support 3 is of a U-shaped structure, and two ends of the support 3 are respectively rotatably connected with a transverse rib plate 11, namely the support 3 can rotate around the transverse rib plate 11; the vertical rib plate 30 is fixedly connected with one end of the bracket 3, the separable vertical rib plate is fixedly connected with the other end of the bracket 3, and the pulley 26 and the stay bar hanging plate 25 are rotatably erected between the vertical rib plate 30 and the separable vertical rib plate. In operation, the pulley 26 is driven to rotate relative to the guide wheel as the pulley moves on the main rope, specifically, the pulley 26 rotates in the direction that the pulley moves on the main rope, and since the vertical rib plate 30 and the detachable vertical rib plate on which the pulley 26 is mounted can rotate around the transverse rib plate 11 through the bracket 3, a connection mode that the pulley 26 can rotate relative to the guide wheel is disclosed herein.

the appearance of the support 3 in the application is in the shape of a hook with two bending lines, and a long-strip-shaped high-strength thin steel plate is bent and processed to be formed, and is specifically in a U-shaped structure. The middle parts of the front and rear wide surfaces of the bracket 3 are respectively provided with concentric round holes, and the two concentric round holes are connected with the guide wheel shaft 12 to play a supporting role; a rivet hole is formed in the lower portion of the side edge of the support 3, and the support 3 and the vertical rib plate 30 are connected through the rivet hole by the rivet 2.

In a further embodiment, the guide wheels comprise a front guide wheel 8, an intermediate guide wheel 7 and a rear guide wheel 5, the center lines of which are in the same horizontal plane, the intermediate guide wheel 7 is rotatably arranged between the vertical rib plate 30 and the detachable vertical rib plate, the diameters of the front guide wheel 8, the intermediate guide wheel 7 and the rear guide wheel 5 are the same, the structure is the same, and the diameter of the pulley 26 is larger than that of the intermediate guide wheel 7.

specifically, stepped holes are respectively machined at two ends of an inner hole, matched with a guide wheel shaft 12, of the guide wheel for mounting a guide wheel deep groove ball bearing 9, and a guide wheel flat gasket 10 is mounted between the guide wheel deep groove ball bearing 9 and a transverse rib plate 11, so that a certain gap is formed between an outer ring of the guide wheel deep groove ball bearing 9 and the transverse rib plate 11, and the guide wheel is guaranteed to rotate freely.

The guide wheel shaft 12 is made of high-strength steel and is in a shape of a slender stepped circular shaft; the shaft section of the head part of the guide wheel shaft 12 is shorter, and two parallel planes are processed on the outer edge of the guide wheel shaft 12; the middle shaft section of the guide wheel shaft 12 is tightly matched with the guide wheel deep groove ball bearing 9 and is loosely matched with the guide wheel spacer 6, the guide wheel spacer 6 is positioned between the guide wheel deep groove ball bearings 9, and the function is that the inner rings of the guide wheel deep groove ball bearings 9 are tightly propped against each other through the guide wheel spacer 6, the position of the guide wheel deep groove ball bearings 9 is limited, and the guide wheel deep groove ball bearings 9 are prevented from moving axially; the shaft section at the tail part of the guide wheel shaft 12 is processed into threads and is installed in a matching way with the locknut 1. The guide wheel shaft 12 is used as a rotation center of the rear guide wheel 5, the middle guide wheel 7 and the front guide wheel 8, and the guide wheel deep groove ball bearing 9 is tightly installed on the transverse rib plate 11 through the combined action of the guide wheel flat washer 10, the guide wheel spacer 6 and the locknut 1 to form a firm whole, so that the axial movement of the guide wheel is limited, and only the rotation movement can be carried out, so that the three guide wheels can easily rotate. The front guide wheel 8 and the rear guide wheel 5 can be interchanged according to the moving direction of the main rope, namely the front guide wheel is arranged at the front end along the moving direction of the main rope.

The pulley 26 is in a ring shape and is formed by processing MC nylon, step holes are respectively processed on two sides of an inner hole and used for mounting the pulley deep groove ball bearing 23, and pulley flat washers 22 are respectively mounted between the pulley deep groove ball bearing 23 and the vertical rib plate 30 and between the pulley deep groove ball bearing 23 and the hinge rib plate 14, so that certain gaps are formed among the pulley deep groove ball bearing 23, the vertical rib plate 30 and the hinge rib plate 14, and the pulley deep groove ball bearing 26 is favorable for movement of the pulley 26. A groove is processed on the outer edge of the pulley 26, the size of the groove is determined according to the diameter of the main rope, the groove has the effects that no matter the pulley is in a net pulling or net collecting state, the pulley 26, the front guide wheel (or the rear guide wheel) and the middle guide wheel 7 are always in an approximate isosceles triangle structure, the grooves of the three wheels form a relatively closed space to wrap the main rope, and deflection and rope biting in the traveling process of the pulley are effectively prevented. The sheave 26 is not the primary load bearing member during operation, and the primary load is borne by the three sheaves on the main rope. Set up three guide pulley in this application, can make leading wheel 8 great with 5 centre-to-centre distances in back guide pulley, make the coaster have good guide performance, reduced the walking resistance, whole capping net walking is in the same direction as smooth, and three pulley 26 atress simultaneously under accident situation can avoid the main rope to bear concentrated load, effectively disperses the impact load of wire, walking board to each guide pulley, ensures main rope safety.

the pulley 26 and the guide pulley all adopt miniature bearing and MC nylon pulley complex design, and coefficient of friction is little, and rotation accuracy is high, is a face contact between the recess of pulley 26 and the main rope, can reduce the resistance of coaster main rope walking in-process and to the wearing and tearing of main rope by a wide margin, effectively protects the main rope, ensures construction safety.

in a preferred embodiment, the above-mentioned detachable vertical rib plate comprises: the hinge comprises hinge rib plates 14 and hinges 13, wherein the hinge rib plates 14 are used for erecting pulleys 26 and fixing stay bar hanging plates 25, a first end of each hinge 13 is rotatably connected with the hinge rib plates 14, a second end of each hinge 13 is detachably connected with the bracket 3, and the distance from the first end of each hinge 13 to the axis of each pulley 26 is smaller than the radius of each pulley 26. When the pulley is used, the pulley can be conveniently sleeved in or taken out of the main rope by separating the loose-leaf 13 from the bracket 3 and rotating around the loose-leaf rib plate 14, so that the working efficiency is improved, the net sealing width is conveniently and dynamically increased, and half load of the pulley is shared.

specifically, the shape of the hinge 13 in the present application is a rectangle with one semicircular end, and is processed by using a high-strength thin steel plate. The folding edge is formed by a sheet metal folding edge process, and one short edge of the rectangle is processed into a folding edge commonly used for the loose leaf. In order to increase the strength, the end head is spot-welded with the steel plate matrix after the hem is formed; the circular ruffles are respectively matched and connected with the hinge rib plates 14 and the hinge rotating shaft 15, and the hinge 13 can freely rotate around the hinge rotating shaft 15 within the range of about 90 degrees; a round hole is arranged in the middle of the steel plate, and the gap between the round hole and the head of the guide wheel shaft 12 in the middle is only about 0.5 mm, so that the inner wall of the round hole can not interfere with the head of the guide wheel shaft 12 in the process that the loose leaf 13 rotates around the loose leaf rotating shaft 15.

the loose-leaf rib plate 14 is in a shape of a rectangle with one semicircular end, is processed by adopting a high-strength thin steel plate and is processed and formed by adopting a sheet metal ruffle process, and one short side of the rectangle is processed into a ruffle commonly used by the loose-leaf 13. In order to increase the strength, the end head is spot-welded with the steel plate matrix after the hem is formed; the circular ruffle is respectively matched and connected with the loose-leaf 13 and the loose-leaf rotating shaft 15; a waist-shaped hole is formed in the middle of the loose-leaf rib plate 14, and the pulley 26 can move up and down in the waist-shaped hole, so that the pulley can be smoothly hung in and out of the main rope; the other end of the hinge rib plate 14 is provided with a hole, and the stay bar hanging plate shaft 28 is arranged in the hole to play a supporting role.

The loose-leaf 13 and the bracket 3 are connected through the self-resetting elastic lock catch 4, so that the loose-leaf 13 and the bracket 3 can be detachably connected. Specifically, the self-resetting elastic latch 4 includes: a fixing sleeve 43, a pin shaft 42, a pull sheet 41 and a spring. The fixing sleeve 43 is fixed on the bracket 3, one end of the pin shaft 42 can be abutted against the loose-leaf 13, so that the loose-leaf 13 is fixed relative to the bracket 3, the fixing sleeve 43 is arranged on the outer side of the pin shaft 42, and the pin shaft 42 can move along the axial direction, so that the pin shaft 42 releases the loose-leaf 13, and the loose-leaf 13 can rotate relative to the loose-leaf rib plate 14; the shifting piece 41 is connected with one end of the pin shaft 42, which is far away from the hinge 13, specifically, the shifting piece 41 is fixed with the pin shaft 42, and the shifting piece 41 is used as a part operated by a human hand; the spring is used as a structure for automatically returning the pin 42, the spring is positioned in the fixing sleeve 43 and connected with the pin 42, and the pin 42 is separated from the hinge 13 when the spring is compressed. When the hinge is in operation, a constructor can lift the shifting piece 41 together with the pin shaft 42 for a certain distance by using a thumb and a forefinger, the stroke is about 8 mm, and the hinge 13 can freely rotate around the hinge rotating shaft 15 within a range of about 90 degrees; when the hand is released, the shifting piece 41 and the pin shaft 42 are automatically reset under the action of the internal spring. The quality of the parts can be guaranteed by batch processing, and cost reduction is facilitated.

the hinge rib plates 14 and the vertical rib plates 30 in the present application are provided with kidney-shaped holes for adjusting the distance between the pulleys 26 relative to the guide wheel, and the pulleys 26 are rotatably erected in the kidney-shaped holes. The arrangement can facilitate the main rope to pass through and be pulled out between the pulley 26 and the guide wheel, and in addition, the distance between the pulley 26 and the guide wheel can be adjusted according to the size of the main rope, so that the main rope pulley is suitable for specifications of different main ropes, the probability of using a wrong pulley at high altitude is effectively reduced, the applicability is improved, and the construction efficiency is improved.

Specifically, the pulley 26 is mounted on the pulley shaft 29, and the pulley shaft 29 is slidably mounted in the kidney-shaped hole through the snap nut 19. The pulley shaft 29 in the application is made of high-strength steel and is in a shape of a slender stepped circular shaft; the pulley shaft 29 has short shaft sections at the two ends and is provided with threads, and the pulley shaft passes through the vertical ribs 30 and the waist-shaped holes in the middle of the hinge rib plates 14 and is installed in a matching way with the slot nuts 19; the intermediate shaft section of the pulley shaft 29 is mounted in loose fit with the pulley spacer 27. The pulley deep groove ball bearing 23 and the pulley flat washer 22 and other parts around the fixed pulley 26 are installed, and the pulley 26 can freely rotate and move up and down in the waist-shaped hole in the middle of the vertical rib plate 30 and the hinge rib plate 14. The draw-in groove nut 19 appearance in this application is the cylinder that has the screw thread through-hole, and the material is the high-strength steel, installs on 29 afterbody screw thread shaft sections of loose pulley, restricts whole loose pulley assembly's axial displacement. The outside of the pocket nut 19 is also machined with two parallel flats to mate with a wrench to turn it into the pulley shaft 29. The middle of the part is also turned into a groove in which the upper shoulder of the locating pin 16 of the pulley 26 is caught, thereby pushing the pulley 26 to move up and down.

In a further embodiment, the sleeve 20 is fixed on each of the vertical rib plate 30 and the loose-leaf rib plate 14, an L-shaped through hole is formed on the circumferential surface of the sleeve 20, a positioning pin 16 is disposed in each sleeve 20, the positioning pin 16 has a shift lever 17 penetrating through the L-shaped through hole, one end of the positioning pin 16 can abut against the slot nut 19, and a return spring 18 is disposed between the bottom of the sleeve 20 and the positioning pin 16. Specifically, the sleeve 20 is a slender circular tube with one end not open, and is made of high-strength steel, one of which is spot-welded on the hinge rib plate 14, and the other is spot-welded on the vertical rib plate 30, and the two are all at the same height.

the positioning pin 16 is made of high-strength steel, is shaped like a slender bar, is respectively turned into a small shoulder at two ends, one end of the positioning pin is matched with the return spring 18, and the other end of the positioning pin is matched with the clamping groove nut 19; the lower part is provided with a threaded hole which is matched with the deflector rod 17; this member is mounted in the sleeve 20 and acts to push the pulley 26 up and down to facilitate the passage of the tackle into and out of the main rope. When the pulley works, the deflector rod 17 is pressed downwards to the limit position of the lower part of the L-shaped through hole of the sleeve 20 by fingers and then clamped into the clamping groove, the return spring 18 is compressed at the moment, the pulley 26 is lowered to the lowest position, and the pulley can be sleeved into the main rope at the moment; then the shifting lever 17 is shifted to push the shifting lever out of the clamping groove, the return spring 17 is reset, the pulley 26 is pushed to the highest position, and the pulley installation is completed. The primary function is to quickly reposition the sheave 26 and the other function is to dynamically adapt the sheave 26 to main ropes of different diameters.

In one embodiment, the brace rod hanging plate 25 disclosed in the present application is a crescent-shaped steel plate made of high-strength steel. A hole is arranged in the middle of the stay bar hanging plate 25, and a hanging plate spacer 24 is welded after penetrating into the hole; two ends of the stay bar hanging plate 25 are respectively provided with a hole for connecting the insulating stay bar, the connecting rope, the safety buckle 31 for retracting or pulling the net rope. The stay bar hanging plate 25 is fixed on the vertical rib plate 30 and the hinge rib plate 14 through a stay bar hanging plate shaft 28, and the stay bar hanging plate shaft 28 is processed by high-strength steel and is in a shape of a long and thin stepped circular shaft. The shaft sections at the two ends of the stay bar hanging plate shaft 28 are short and are provided with threads, and the stay bar hanging plate shaft is matched with the check nut 21 of the stay bar hanging plate after penetrating through the holes at the lower ends of the vertical rib plates 30 and the loose-leaf rib plates 14; the intermediate shaft section and the hanging plate spacer bush 24 are installed in a loose fit manner, so that the hanging plate spacer bush 24 can rotate freely. The stay bar hanging plate 25 disclosed in the application is provided with the double-hole hanging lugs, so that an insulating stay bar can be conveniently installed, the impact load of a lead and a walking plate can be effectively absorbed in an accident state, a top sealing net is ensured not to be damaged, and the lead is reliably supported; the circular lug holes enable the front and rear connecting ropes of the tackle to dynamically adapt to the arc shape of the main rope, stress centers of the front and rear connecting ropes are always on the same arc line and parallel to the main rope, the tackle is not prone to deflection, and the whole net sealing device is balanced, uniform, stable and reliable in stress in the traction working process.

Disclosed herein are specific uses of the disclosed block blocks:

firstly, a main rope and a net pulling rope are erected between auxiliary cross beams on two iron towers in front of and behind a spanning gear, and then insulation support rods, connection ropes and net ropes are connected one by one on the auxiliary cross beam of the iron tower on one side according to the quantity of pulleys calculated by the net sealing width. The two ends and the middle of the capping net are provided with insulating support rods, so that the waist-shrinking phenomenon of the two main ropes under the action of the gravity of the capping net is prevented. Then the net pulling rope starts to be pulled through manual or mechanical winching, the net retracting rope appropriately carries a certain tension, the top sealing net is slowly pulled above the object to be spanned, and the net pulling rope and the net retracting rope are simultaneously anchored, so that net sealing construction is completed; after the stringing construction is finished, the net withdrawing rope starts to be drawn through manpower or a motor-driven winching, the net pulling rope is provided with a certain tension force, the top sealing net is slowly pulled back to the side of the iron tower, and the net detaching construction is finished.

In addition, this application has still disclosed a block device, including the block coaster, and is concrete, and this block coaster is as disclosed the block coaster in above-mentioned embodiment, and consequently, the block device that has this block coaster also has above-mentioned all technological effects, and the repeated description is no longer repeated here.

the embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. a block, comprising:

A mounting frame;

The guide wheel is rotatably arranged on the mounting rack and used for rolling on the main rope;

A pulley (26) rotatably mounted on the mounting frame, wherein the pulley (26) is matched with the guide wheel and can wrap the main rope, and the pulley (26) can rotate relative to the guide wheel in the direction of the movement of the main rope of the pulley (26);

The supporting rod hanging plate (25) is rotatably installed on the installation frame, and installation holes for installing safety buckles (31) are formed in two ends of the supporting rod hanging plate (25).

2. the block of claim 1, wherein the mounting bracket comprises:

the guide wheel is rotatably erected on the two transverse rib plates (11);

The support (3) is of a U-shaped structure, and two ends of the support (3) are respectively rotatably connected with one transverse rib plate (11);

The vertical rib plate (30), the vertical rib plate (30) is fixedly connected with one end of the bracket (3);

The support is characterized by comprising separable vertical rib plates, the separable vertical rib plates are fixedly connected with the other end of the support (3), and the pulley (26) and the stay bar hanging plate (25) are rotatably erected between the vertical rib plates (30) and the separable vertical rib plates.

3. The block of claim 2, wherein the separable vertical gussets comprise:

the hinge rib plates (14) are used for erecting the pulleys (26) and the stay bar hanging plates (25);

The first end of the hinge (13) is rotatably connected with the hinge rib plate (14), the second end of the hinge (13) is detachably connected with the bracket (3), and the distance from the first end of the hinge (13) to the axis of the pulley (26) is smaller than the radius of the pulley (26).

4. A block as claimed in claim 3, characterised in that the flap (13) is connected to the frame (3) by means of a self-resetting resilient catch (4), the self-resetting resilient catch (4) comprising:

a fixing sleeve (43), wherein the fixing sleeve (43) is fixed on the bracket (3);

the hinge pin (42) can be abutted against the hinge (13) for limiting, the fixed sleeve (43) is sleeved on the outer side of the hinge pin (42), and the hinge pin (42) can move along the axis direction;

The shifting sheet (41), the shifting sheet (41) is connected with one end, far away from the loose-leaf (13), of the pin shaft (42);

the spring is positioned inside the fixed sleeve (43) and connected with the pin shaft (42), and the pin shaft (42) is separated from the hinge (13) when the spring is compressed.

5. A block as claimed in claim 3, characterised in that the loose-leaf rib plate (14) and the vertical rib plate (30) are provided with kidney-shaped holes for adjusting the distance between the pulley (26) and the guide wheel, and the pulley (26) is rotatably arranged in the kidney-shaped holes.

6. a block as claimed in claim 5, characterised in that the block (26) is mounted on a block shaft (29) and the block shaft (29) is slidably mounted in the kidney bore by means of a bayonet nut (19).

7. The net blocking tackle according to claim 6, characterized in that the vertical rib plates (30) and the loose-leaf rib plates (14) are both fixed with sleeves (20), and the circumferential surfaces of the sleeves (20) are both provided with L-shaped through holes;

Positioning pins (16) are arranged in the sleeves (20), the positioning pins (16) are provided with shifting rods (17) penetrating through the L-shaped through holes, and one ends of the positioning pins (16) can abut against the clamping groove nuts (19);

And a return spring (18) is arranged between the bottom of the sleeve (20) and the positioning pin (16).

8. A block as claimed in any one of claims 2 to 7, characterised in that the guide wheels comprise a leading guide wheel (8), an intermediate guide wheel (7) and a trailing guide wheel (5) which are arranged on the same horizontal plane, the intermediate guide wheel (7) is rotatably mounted between the splittable wall plate and the wall plate (30), the leading guide wheel (8), the intermediate guide wheel (7) and the trailing guide wheel (5) have the same diameter, and the diameter of the pulley (26) is greater than the diameter of the intermediate guide wheel (7).

9. A block as claimed in any one of claims 1-7, characterised in that the guide wheels and the pulleys (26) are nylon wheels and have grooves on the outside for guiding the main ropes.

10. A block apparatus comprising a block trolley, wherein the block trolley is as claimed in any one of claims 1 to 9.