CN111014548B

CN111014548B - Clamping rod hammer with linkage of braking and driving

Info

Publication number: CN111014548B
Application number: CN201911290019.3A
Authority: CN
Inventors: 李修福; 刘策水; 张景峰; 李建勇; 李士军
Original assignee: Zhangqiu Guangda Petrochemical Parts Co ltd
Current assignee: Zhangqiu Guangda Petrochemical Parts Co ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2021-06-01
Anticipated expiration: 2039-12-16
Also published as: CN111014548A

Abstract

The invention discloses a brake and drive linkage clamping bar hammer, belonging to the field of forging hammers and comprising a frame, wherein the frame is vertically and slidably connected with a hammer rod, the frame is provided with a buffer driving device for driving the hammer rod to vertically slide, the frame is provided with a braking device for locking the hammer rod, the braking device comprises two brake pieces and a driving structure for driving the two brake pieces to mutually approach, the buffer driving device comprises a mounting seat fixedly connected with the frame, the mounting seat is provided with a power structure, the power structure comprises a roller rotating relative to the mounting seat, the frame is fixedly connected with two driving motors for driving the roller to rotate, the frame is provided with an operating structure for driving the two rollers to mutually approach, a linkage structure is arranged between the driving structure and the operating structure, when the operating structure drives the two rollers to mutually approach, the linkage structure drives the brake pieces to be away from each other. The invention has the effect of protecting the driving device and the braking device.

Description

Clamping rod hammer with linkage of braking and driving

Technical Field

The invention relates to the technical field of forging hammers, in particular to a clamping rod hammer with linkage of braking and driving.

Background

Forging is a processing method which utilizes forging machinery to apply pressure on a metal blank to cause the metal blank to generate plastic deformation so as to obtain a forged piece with certain mechanical property, certain shape and certain size. Forgings are mostly adopted for important parts such as flanges with high load and severe working conditions in related machines. The clamping bar hammer in the forging process enables a common forging hammer, and the clamping bar hammer is large in operation space, wide in range of forgeable forgings, capable of being used for freely forging blanks and forging moulding beds, and widely used in forging enterprises.

In the prior art, referring to fig. 1 and 2, the clamping bar hammer includes a frame 100, a hammer rod 101 is vertically slidably connected to the frame 100, a hammer head 102 is fixedly connected to a lower end of the hammer rod 101, the frame 100 is provided with a driving device 200 for driving the hammer rod 101 to vertically slide, the driving device 200 includes a mounting seat 201 fixedly connected to the frame 100, two rollers 302 rotatably connected to the mounting seat 201, the two rollers 302 are respectively located at two radial sides of the hammer rod 101, one of the rollers 302 can horizontally slide to clamp the hammer rod 101, the frame 100 is fixedly connected with two driving motors 303, the driving motors 303 rotate in opposite directions through belt transmission driving the rollers 302, the rotating direction can drive the hammer rod 101 to move upwards, the frame 100 is rotatably connected with a cam 203, the cam 203 is coaxially and fixedly connected with an operating rod 204, and the cam 203 can horizontally slide against the rollers 302, the operating rod 204 is rotated to enable the roller 302 to clamp the hammer rod 101, the hammer rod 101 is driven to move upwards under the action of friction force, so that the hammer head 102 is lifted, then the operating rod 204 is rotated again to enable the roller 302 not to clamp the hammer rod 101, and then the hammer head 102 falls under the action of gravity, so that the workpiece is hammered.

The frame 100 is provided with still that the arresting gear 600 with hammer 101 locking, arresting gear 600 is including articulating the brake ring 607 in frame 100, on hammer 101 was located to the brake ring 607 cover, brake ring 607 fixedly connected with lever 709 is connected with locking spring 608 between frame 100 and the lever 709, locking spring 608 one end fixed connection is on frame 100, other end fixed connection is in lever 709 length direction's intermediate position. Under the action of the locking spring 608 and the elastic force of the locking spring 608, the lever 709 is turned upwards, so that the brake ring 607 is abutted against the side wall of the hammer rod 101, and the braking of the hammer head 102 is realized.

The above prior art solutions have the following drawbacks: when the hammer head needs to be stopped, the operating rod cannot be rotated downwards, otherwise, the hammer rod is clamped by braking, and the driving structure applies upward force to the hammer rod, so that the brake ring and the roller are seriously damaged, but the situation can occur due to misoperation of workers in the working process, so that the driving device and the braking device are damaged.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a clamping rod hammer with linkage of braking and driving, which protects the effects of a driving device and a braking device.

The above object of the present invention is achieved by the following technical solutions: a clamping bar hammer capable of realizing braking and driving linkage comprises a rack, wherein a hammer rod is vertically and slidably connected with the rack, a hammer head is fixedly connected with the lower end of the hammer rod, a buffer driving device for driving the hammer rod to vertically slide is arranged on the rack, a braking device for locking the hammer rod is arranged on the rack, the braking device comprises a fixed seat fixedly connected with the rack of the clamping bar hammer, two braking pieces are horizontally and slidably connected with the fixed seat, the two braking pieces are respectively positioned on two radial sides of the clamping bar hammer rod, the mutually close side walls of the two braking pieces are cambered surfaces identical to the side walls of the clamping bar hammer rod, the radian of the cambered surfaces is smaller than pi, a driving structure for driving the two braking pieces to mutually close is arranged on the fixed seat, the buffer driving device comprises a mounting seat fixedly connected with the rack, the mounting seat is provided with a power structure, the power structure comprises idler wheels rotating relative to the mounting, the rotation axis of gyro wheel is the level setting, two the gyro wheel is located the radial both sides of hammer stem respectively, the gyro wheel radially slides along the hammer stem, two drive gyro wheel pivoted driving motor of frame fixedly connected with, the direction that the gyro wheel is close to the linear velocity of hammer stem one side lateral wall is for making progress, the frame is provided with the operation structure that two gyro wheels of drive are close to each other, be provided with linkage structure between drive structure and the operation structure, work as two gyro wheels of operation structure drive are close to each other, linkage structure drives the brake spare and keeps away from each other.

Through adopting above-mentioned technical scheme, driving motor drives buffer structure work through the belt drive, and buffer structure drives the gyro wheel and rotates, when needing to lift the tup, utilizes operation structure to make two gyro wheels step up the hammer stem, applys ascending frictional force to the hammer stem, makes the hammer stem rebound. The driving structure drives the two brake pieces to be close to each other, and the hammer rod is tightly held by the two brake pieces, so that the braking of the hammer head is realized. When the operating structure drives the two rollers to be close to each other, and the hammer head moves upwards, the linkage structure drives the brake pieces to be away from each other, so that the rollers and the brake pads are prevented from acting on the hammer rod at the same time, the driving device and the braking device are protected, and the service life is prolonged.

The present invention in a preferred example may be further configured to: the mounting base is provided with a horizontally arranged limiting groove, a bearing seat is connected in the limiting groove in a sliding mode, and two ends of the roller are rotatably connected with the bearing seat.

Through adopting above-mentioned technical scheme, utilize antifriction bearing to reduce the resistance when the gyro wheel rotates, make the bearing frame slide and connect on the mount pad, make between gyro wheel and the mount pad rotate the structure that slides again promptly more stable.

The present invention in a preferred example may be further configured to: the end, far away from the gyro wheel, of the bearing block is fixedly connected with a poke rod which is coaxially arranged with the gyro wheel, the operation structure applies a force which is close to the poke rod, and the two poke rods are fixedly connected with a first gas spring between the poke rods at the same side.

Through adopting above-mentioned technical scheme, can exert pressure to the air spring and make its shrink when two gyro wheels of operation structure's effect press from both sides the hammer stem clamp, when operation structure was out of work, under the effect of air spring, two gyro wheels removed to the direction of keeping away from each other, made the tup can fall under the action of gravity.

The present invention in a preferred example may be further configured to: the operation structure comprises a door-shaped frame hinged to the mounting seat, the door-shaped frame comprises two operation plates and a connecting rod, the two operation plates are rotatably connected with the mounting seat, the connecting rod is fixedly connected between the two operation plates, the two spiral grooves are arranged in axial symmetry on the operation plates, and the poke rod penetrates through the spiral grooves.

Through adopting above-mentioned technical scheme, rotate door type frame to make the operation panel rotate, at the effect of helicla flute, exert pressure to the poker rod, thereby make two bearing frames be close to each other, and then make two gyro wheels be close to each other.

The present invention in a preferred example may be further configured to: the driving structure comprises a center connecting rod which is rotatably connected to a fixing seat, wherein the two ends of the center connecting rod are respectively hinged to a first connecting rod and a second connecting rod, one ends, far away from the center connecting rod, of the first connecting rod and the second connecting rod are respectively hinged to two brake pieces, the driving structure further comprises a balancing weight which is hung on the center connecting rod, the first connecting rod and the second connecting rod which are driven when the balancing weight descends are close to each other, the fixing seat is hinged to a lever, and one end of the lever is hinged to the balancing weight.

Through adopting above-mentioned technical scheme, make the central connecting rod rotate under the effect of balancing weight to the pulling is first, the second connecting rod is close to each other, and then drives the brake piece and is close to each other, holds the hammer stem tightly.

The present invention in a preferred example may be further configured to: the included angle between the first connecting rod and the central connecting rod is an acute angle alpha, the included angle between the second connecting rod and the central connecting rod is an acute angle beta, and the acute angle alpha = acute angle beta =14 °.

Through adopting above-mentioned technical scheme, make the great angle of center connecting rod rotation, but the distance that the first, second connecting rod of pulling is close to each other is less, so reach laborsaving effect, can utilize lighter balancing weight, alright with press from both sides the tight realization braking of hammer stem, and then alleviateed operating personnel's manipulation strength.

The present invention in a preferred example may be further configured to: the center connecting rod is the slope setting, the one end fixedly connected with cable that the center connecting rod leaned on down, the one end rotation that the center connecting rod leaned on is connected with the movable pulley, the cable walks around movable pulley then fixed connection in balancing weight.

By adopting the technical scheme, the direction of the balancing weight is changed by the inhaul cable, so that the balancing weight exerts upward force on the lower end of the central connecting rod, and exerts downward force on the upper end of the central connecting rod, and the purpose that the balancing weight rotates the central connecting rod under the action of gravity is achieved.

The present invention in a preferred example may be further configured to: the fixing base rotates and is connected with first fixed pulley and second fixed pulley, first fixed pulley is located the top of central connecting rod, the second fixed pulley is located the below of central connecting rod, the cable is in proper order around first fixed pulley, second fixed pulley and movable pulley then fixed connection in balancing weight.

By adopting the technical scheme, the track of the inhaul cable is changed by utilizing the first fixed pulley and the second fixed pulley, so that the included angle between the pulling force applied by the inhaul cable to the central connecting rod and the force arm of the pulling force approaches to 90 degrees, the generation of parallel central connecting rod component force is reduced, and more gravity of the balancing weight is converted into torque for rotating the central connecting rod.

The present invention in a preferred example may be further configured to: and a second air spring is arranged between the brake pieces, and two ends of the second air spring are respectively and fixedly connected to the brake seats.

Through adopting above-mentioned technical scheme, when needs tup whereabouts, rotate the lever, lift the balancing weight, then the air spring stretches, makes two brake pieces keep away from each other, receives the influence of brake block when avoiding the tup to drive the hammer stem whereabouts.

The present invention in a preferred example may be further configured to: the linkage structure comprises a first linkage rod and a second linkage rod, the first linkage rod is sleeved on the second linkage rod, the first linkage rod and the second linkage rod are rotatably connected, the first linkage rod is hinged to the door-shaped frame, the second linkage rod is hinged to the lever, and when the lever rotates to be horizontal, the roller and the brake pad are not in contact with the hammer rod.

Through adopting above-mentioned technical scheme, the lever rotates and drives the rotation of door type frame through linkage structure, has realized drive structure and operation structure's linkage, and when the lever rotated to the level gyro wheel and brake block all do not all with hammer stem contact to make the tup fall down naturally.

In summary, the invention includes at least one of the following beneficial technical effects:

firstly, the linkage of the driving structure and the operating structure is realized by utilizing the linkage structure, when the operating structure drives the two rollers to approach each other and the hammer head moves upwards, the linkage structure drives the brake pieces to be away from each other, so that the rollers and the brake pads are prevented from simultaneously acting on the hammer rod, and the driving device and the braking device are protected;

the movable structure comprises a center connecting rod which is rotatably connected to the fixed seat, a first connecting rod and a second connecting rod are hinged to two ends of the center connecting rod respectively, one ends, far away from the center connecting rod, of the first connecting rod and one ends, far away from the center connecting rod, of the second connecting rod are hinged to the two brake pieces respectively, an included angle between the first connecting rod and the center connecting rod is an acute angle alpha, an included angle between the second connecting rod and the center connecting rod is an acute angle beta, the acute angle alpha = the acute angle beta =14 degrees, so that the center connecting rod rotates by a larger angle, but the distance for pulling the first connecting rod and the second connecting rod to approach each other is smaller, so that a labor-saving effect is achieved, a lighter counterweight block can be utilized, the;

and thirdly, the gravity of the balancing weight is utilized to enable the central connecting rod to rotate, and compared with the elastic piece, the gravity cannot change along with the change of the stroke, so that more stable braking force is provided for the braking structure.

Drawings

FIG. 1 is a perspective view of the background art;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of the overall structure of the present embodiment;

FIG. 4 is a schematic structural diagram of a driving device of the present embodiment;

FIG. 5 is a schematic structural diagram of the present embodiment for illustrating a power structure;

FIG. 6 is a schematic structural view of the door frame of the present embodiment;

FIG. 7 is a schematic structural diagram illustrating a buffer structure according to the present embodiment;

FIG. 8 is a cross-sectional view of the present embodiment for illustrating a buffering structure;

FIG. 9 is a cross-sectional view of the present embodiment showing a buffer member;

fig. 10 is a perspective view of the present embodiment for showing a braking device;

FIG. 11 is an enlarged view of portion B of FIG. 10;

fig. 12 is a schematic structural diagram for showing a driving structure in the present embodiment.

Reference numerals: 100. a frame; 101. a hammer lever; 102. a hammer head; 200. a drive device; 201. a mounting seat; 202. a limiting groove; 203. a cam; 204. an operating lever; 300. a power structure; 301. a bearing seat; 302. a roller; 303. a drive motor; 304. a poke rod; 400. an operating structure; 401. a first gas spring; 402. a gantry frame; 403. an operation panel; 404. a connecting rod; 405. a helical groove; 500. a buffer structure; 501. a supporting seat; 502. a first buffer tray; 503. a second buffer tray; 504. a chute; 505. a universal coupling; 506. a slider; 507. a buffer member; 508. a cylinder body; 509. a piston; 510. a through hole; 511. a piston rod; 512. a spring; 513. inserting a rod; 600. a braking device; 601. a fixed seat; 602. a braking member; 603. a brake seat; 604. a brake pad; 605. an arc-shaped slot; 606. a second gas spring; 607. a brake ring; 608. a locking spring; 700. a drive structure; 701. a central link; 702. a first link; 703. a second link; 704. a cable; 705. a movable pulley; 706. a first fixed pulley; 707. a second fixed pulley; 708. a balancing weight; 709. a lever; 800. a linkage structure; 801. a first linkage rod; 802. a second linkage rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): as shown in fig. 3, the clamping bar hammer with linkage of braking and driving disclosed by the invention comprises a frame 100, a hammer rod 101 is vertically and slidably connected to the frame 100, a hammer head 102 is fixedly connected to the lower end of the hammer rod 101, the frame 100 is connected with a buffering driving device 200 for driving the hammer rod 101 to vertically slide, and the frame 100 is connected with a braking device 600 for locking the hammer rod 101.

As shown in fig. 4, the buffering driving device 200 includes a mounting seat 201, and the mounting seat 201 is fixedly connected to the frame 100 of the bar hammer. The mount 201 is provided with a power structure 300, and the power structure 300 is used for applying an upward force to the hammer rod 101, thereby lifting the hammer head 102. The mount 201 is also provided with an operating structure 400, which operating structure 400 can control whether or not to transmit the force of the power structure 300 to the clamping bar hammer rod 101.

As shown in fig. 5, two limiting grooves 202 are formed on two sides of the mounting seat 201, and the four limiting grooves 202 are horizontally arranged. A bearing seat 301 is slidably connected in each limiting groove 202.

As shown in fig. 5, the power structure 300 includes a roller 302 having both ends rotatably coupled to the bearing housing 301 and a driving motor 303 for driving the roller 302 to rotate. The both ends of gyro wheel 302 are rotated through setting up antifriction bearing and bearing frame 301 and are connected, and bearing frame 301 sliding connection is in spacing groove 202 to realized gyro wheel 302 and rotated the connection structure who slides again for mount pad 201 promptly. The drive motor 303 is a reduction motor, so that the rotation speed of the output shaft of the drive motor 303 is reduced and the torque is increased.

As shown in fig. 5, one end of the bearing seat 301 is fixedly connected with the dial rod 304 coaxially arranged with the roller 302, the operating structure 400 applies a force to the dial rod 304 to approach each other, so that the bearing seat 301 moves to a direction approaching the hammer rod 101, thereby the two rollers 302 clamp the hammer rod 101, the two rollers 302 rotate in opposite directions under the driving of the driving motor 303, the linear velocity direction of the side wall of one side of the two rollers 302 approaching the hammer rod 101 is upward, and the rollers 302 apply an upward friction force to the hammer rod 101.

As shown in fig. 5, a first air spring 401 is fixedly connected between the two shifting rods 304 on the same side, when the two rollers 302 clamp the hammer rod 101 under the action of the operating structure 400, the first air spring 401 is pressurized to contract, and when the operating structure 400 does not work, the two rollers 302 move in the direction away from each other under the action of the first air spring 401, so that the hammer head can fall under the action of gravity.

As shown in fig. 6, the operating structure 400 comprises a portal 402 hinged to the mounting 201. The gate frame 402 includes two operation plates 403 rotatably coupled to both sides of the mount 201 and a connection rod 404 fixedly coupled between the two operation plates 403. The operating plate 403 is provided with two coaxial spiral grooves 405, and the poke rod 304 is inserted in the spiral grooves 405. The door frame 402 is rotated to rotate the operating plate 403, and the spiral groove 405 applies pressure to the tap lever 304, so that the two bearing blocks 301 are brought close to each other, and the two rollers 302 are brought close to each other.

As shown in fig. 4, a buffer structure 500 is disposed on the frame 100, and the driving motor 303 drives the roller 302 to rotate through the buffer structure 500.

As shown in fig. 7, the buffering structure 500 includes a supporting base 501 fixedly connected to the frame 100, and a first buffering plate 502 and a second buffering plate 503 are coaxially and rotatably connected to the supporting base 501. The driving motor 303 drives the first buffer tray 502 to rotate through belt transmission, a plurality of arc-shaped sliding grooves 504 are formed in the end face, close to the second buffer tray 503, of the first buffer tray 502, the radian of each sliding groove 504 is equal, the radius of each sliding groove 504 is different, and the minimum radius difference of the two sliding grooves 504 is larger than the width of each sliding groove 504.

As shown in fig. 7 and 8, the second buffer disk 503 is connected to the roller 302 by providing a universal joint 505, a plurality of sliding blocks 506 are fixedly connected to the end surface of the second buffer disk 503, the sliding blocks 506 correspond to the slide grooves 504 one-to-one, and the sliding blocks 506 are slidably connected in the slide grooves 504. A buffer 507 is arranged in the sliding groove 504, one end of the buffer 507 is abutted against the bottom wall of the sliding groove 504, and the other end of the buffer 507 is abutted against the sliding block 506. When the rotating speed of the first buffer disc 502 is greater than the rotating speed of the second buffer disc 503, the buffer 507 is compressed, and the impact force between the first buffer disc 502 and the second buffer disc 503 is reduced by the buffer 507, so that the increase speed of the friction force between the belt and the belt pulley in the belt transmission structure is reduced, and the service life of the belt is prolonged.

As shown in fig. 9, the buffer 507 includes a cylinder 508, the cylinder 508 is in an arc shape, the cylinder 508 is slidably connected with a piston 509, the piston 509 divides the space in the cylinder 508 into a rodless cavity and a rod cavity, the piston 509 is provided with a plurality of through holes 510, the piston 509 is fixedly connected with a piston rod 511, and the piston rod 511 extends out of the cylinder 508 and abuts against the sliding block 506. The piston rod 511 is sleeved with a spring 512, one end of the spring 512 is abutted against the sliding block 506, and the other end is abutted against the cylinder 508. When the buffer 507 is compressed, the impact force between the first buffer disc 502 and the second buffer disc 503 is relieved by the spring 512 in the buffer 507, because the elastic force of the spring 512 is in direct proportion to the amount of compression, the force transmitted between the two is gradually increased, and the impact force between the first buffer disc 502 and the second buffer disc 503 is reduced.

As shown in fig. 9, one end of the cylinder 508 far from the piston rod 511 is fixedly connected with a plurality of arc-shaped insertion rods 513, the insertion rods 513 correspond to the through holes 510 one-to-one, and the insertion rods 513 are in clearance fit with the through holes 510. The lengths of the plurality of insertion rods 513 are sequentially decreased progressively, so that when the buffer 507 contracts, the insertion rods 513 are sequentially inserted into the through holes 510, and the through holes 510 are gradually blocked, so that the through holes 510 for fluid flowing are reduced, the resistance of fluid flowing is increased, the resistance of the piston 509 during moving is increased, and the following effects are achieved: in the compression process of the buffer 507, the resistance generated by the buffer 507 is gradually increased, and the buffer 507 has the same function as the spring 512, so that the force transmitted between the first buffer disc 502 and the second buffer disc 503 is gradually increased, and the impact force between the first buffer disc 502 and the second buffer disc 503 is reduced.

As shown in fig. 10, the braking device 600 includes a fixed base 601 fixedly connected to the frame 100 of the clamping rod hammer, and two braking members 602 are horizontally slidably connected to the fixed base 601, and the two braking members 602 are respectively located at two radial sides of the hammer rod 101. The fixed seat 601 is provided with a driving structure 700 for driving the two braking pieces 602 to approach each other, the driving structure 700 drives the two braking pieces 602 to approach each other, and the two braking pieces 602 are used for clasping the hammer rod 101, so that the braking of the hammer head 102 is realized.

As shown in fig. 10 and 11, the braking member 602 includes a braking base 603 slidably connected to the fixing base 601, and an arc-shaped slot 605 is formed at an end of the braking base 603 near the brake block 604. The brake seat 603 is fixedly connected with a brake pad 604 through a bolt. The brake block 604 is in an arc shape with uniform thickness, one protruding side of the brake block 604 is attached to the arc-shaped groove 605, the diameter of the inward concave arc surface of the brake block 604 is the same as that of the hammer rod 101, and the radian of the arc surface is smaller than pi. Because the mutually close side walls of the two brake pieces 602 are arc surfaces with the same diameter as the clamping bar hammer rod 101, when the two brake pads 604 hold the hammer rod 101 tightly, the contact area between the brake pads 604 and the hammer head 102 is large, so that the pressure between the brake pads 604 and the hammer head 102 is reduced, the abrasion speed of the brake pads 604 is reduced, the frequency of replacing the brake pads 604 is reduced, and the clamping bar hammer is more convenient to use.

As shown in fig. 10, a second gas spring 606 is disposed between the braking members 602, and two ends of the second gas spring 606 are respectively and fixedly connected to the two braking seats 603, so that when the hammer head 102 needs to fall, the driving structure 700 does not make the two braking members 602 approach each other, and under the action of the second gas spring 606, the two braking members 602 are kept away from each other, thereby avoiding the influence of the braking piece 604 when the hammer head 102 drives the hammer rod 101 to fall.

As shown in fig. 12, the driving structure 700 includes a center link 701 rotatably connected to the fixing base 601, two ends of the center link 701 are respectively hinged to a first link 702 and a second link 703, and ends of the first link 702 and the second link 703 far away from the center link 701 are respectively hinged to the two braking members 602. The central link 701 is arranged obliquely, the angle between the first link 702 and the central link 701 is an acute angle α, the angle between the second link 703 and the central link 701 is an acute angle β, and the acute angle α = acute angle β =14 °. A pull rope 704 is fixedly connected to one end of the center link 701, and a movable pulley 705 is rotatably connected to one end of the center link 701. The fixed seat 601 is rotatably connected with a first fixed pulley 706 and a second fixed pulley 707, the first fixed pulley 706 is located above the center connecting rod 701, the second fixed pulley 707 is located below the center connecting rod 701, and the pull cable 704 sequentially passes through the first fixed pulley 706, the second fixed pulley 707 and the movable pulley 705 and is then fixedly connected with a balancing weight 708. The center connecting rod 701 is rotated under the action of the counterweight 708, so that the first connecting rod 702 and the second connecting rod 703 are pulled to approach each other, and the brake piece 602 is driven to approach each other, so as to hold the hammer rod 101 tightly.

As shown in fig. 10, a lever 709 is hinged on the fixing base 601, one end of the lever 709 is hinged on the counterweight block 708, and when the brake is not needed, the lever 709 is rotated to lift the counterweight block 708.

As shown in fig. 10, a linkage structure 800 is arranged between the lever 709 and the door-shaped frame 402, the linkage structure 800 includes a first linkage rod 801 and a second linkage rod 802, the first linkage rod 801 is sleeved on the second linkage rod 802 and is in threaded connection with the second linkage rod 802, the first linkage rod 801 is hinged to the door-shaped frame 402, the second linkage rod 80 is hinged to the lever 709, and when the lever 709 rotates to the horizontal, the roller 302 and the brake pad 604 are not in contact with the hammer rod 101.

The specific working process of the embodiment is as follows: when the hammer head 102 needs to be lifted, the lever 709 is rotated, the gantry 402 is rotated under the action of the linkage structure, so that the operating plate 403 is rotated, pressure is applied to the poke rod 304 under the action of the spiral groove 405, so that the two bearing seats 301 are close to each other, and the two rollers 302 clamp the hammer rod 101, so as to provide upward friction force for the hammer rod 101. Because the lever 709 rotates, the weight block 708 is lifted, so that the two braking members 602 are separated from each other under the action of the second gas spring 606, and the hammer head 102 is prevented from being affected by the braking piece 604 when the hammer rod 101 is driven to fall.

At this time, the first buffer disk 502 keeps rotating in the driving motor 303, and the second buffer disk 503 rotates at a reduced speed due to the friction force received by the roller 302, so that the first buffer disk 502 and the second buffer disk 503 rotate relatively, thereby compressing the buffer 507 and relieving the impact force between the first buffer disk 502 and the second buffer disk 503 by the buffer 507.

During braking, external force is not applied to the lever 709, under the action of gravity of the balancing weight 708, the pull cable 704 applies torque to the central connecting rod 701, so that the central connecting rod 701 rotates, the first connecting rod 702 and the second connecting rod 703 are pulled to be close to each other, the braking pieces 602 are driven to be close to each other, the hammer rod 101 is clasped, and the hammer 102 is braked.

When the hammer 102 is blanked, the lever 709 rotates to the horizontal, the roller 302 and the brake block 604 are not in contact with the hammer rod 101, and therefore the hammer 102 naturally falls down.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a clamping bar hammer of braking and drive linkage, includes frame (100), the vertical sliding connection of frame (100) has hammer stem (101), hammer stem (101) lower extreme fixedly connected with tup (102), frame (100) are provided with the buffering drive arrangement (200) that drive hammer stem (101) vertically slided, frame (100) are provided with arresting gear (600) with hammer stem (101) locking, its characterized in that: the braking device (600) comprises a fixed seat (601) fixedly connected to a rack (100) of the clamping bar hammer, the fixed seat (601) is horizontally and slidably connected with two braking pieces (602), the two braking pieces (602) are respectively positioned at two radial sides of the clamping bar hammer rod (101), the two mutually-close side walls of the braking pieces (602) are arc surfaces the same as the side walls of the clamping bar hammer rod (101), the radian of the arc surfaces is smaller than pi, a driving structure (700) for driving the two braking pieces (602) to be mutually close is arranged on the fixed seat (601), the buffering driving device (200) comprises a mounting seat (201) fixedly connected to the rack (100), the mounting seat (201) is provided with a power structure (300), the power structure (300) comprises a roller (302) rotating relative to the mounting seat (201), and the rotating axis of the roller (302) is horizontally arranged, the two rollers (302) are respectively positioned on two radial sides of the hammer rod (101), the rollers (302) slide along the hammer rod (101) in the radial direction, the rack (100) is fixedly connected with two driving motors (303) for driving the rollers (302) to rotate, the linear velocity direction of the rollers (302) close to the side wall of one side of the hammer rod (101) is upward, the rack (100) is provided with an operating structure (400) for driving the two rollers (302) to be close to each other, a linkage structure is arranged between the driving structure and the operating structure, and when the operating structure (400) drives the two rollers (302) to be close to each other, the linkage structure (800) drives the brake pieces (602) to be away from each other; the buffer structure (500) is arranged on the rack (100), the driving motor (303) drives the roller (302) to rotate through the buffer structure (500), the buffer structure (500) comprises a supporting seat (501) fixedly connected to the rack (100), the supporting seat (501) is coaxially and rotatably connected with a first buffer disk (502) and a second buffer disk (503), the driving motor (303) drives the first buffer disk (502) to rotate, the end face, close to the second buffer disk (503), of the first buffer disk (502) is provided with a plurality of arc-shaped sliding grooves (504), the second buffer disk (503) is connected with the roller (302) through a universal coupling (505), the end face of the second buffer disk (503) is fixedly connected with a plurality of sliding blocks (506), the sliding blocks (506) correspond to the sliding grooves (504) in a one-to-one manner, and the sliding blocks (506) are slidably connected into the sliding grooves (504); a buffer part (507) is arranged in the sliding groove (504), one end of the buffer part (507) is abutted against the bottom wall of the sliding groove (504), and the other end is abutted against the sliding block (506); the buffer (507) comprises a cylinder body (508), the cylinder body (508) is arc-shaped, the cylinder body (508) is connected with a piston (509) in a sliding mode, the piston (509) divides the space in the cylinder body (508) into a rodless cavity and a rod cavity, a plurality of through holes (510) are formed in the piston (509), the piston (509) is fixedly connected with a piston rod (511), and the piston rod (511) extends out of the cylinder body (508) and abuts against the sliding block (506); a spring (512) is sleeved on the piston rod (511), one end of the spring (512) is abutted against the sliding block (506), and the other end is abutted against the cylinder body (508); one end of the cylinder body (508) far away from the piston rod (511) is fixedly connected with a plurality of arc-shaped inserted rods (513), the inserted rods (513) correspond to the through holes (510) in a one-to-one mode, and the inserted rods (513) are in clearance fit with the through holes (510); the lengths of the plurality of insert rods (513) are sequentially decreased.

2. A brake and drive ganged bar hammer as set forth in claim 1, wherein: the mounting seat (201) is provided with a horizontally arranged limiting groove (202), a bearing seat (301) is connected in the limiting groove (202) in a sliding mode, and two ends of the roller (302) are rotatably connected with the bearing seat (301).

3. A brake and drive ganged bar hammer as set forth in claim 2, wherein: one end fixedly connected with that bearing frame (301) kept away from gyro wheel (302) is coaxial setting poker rod (304) with gyro wheel (302), operating structure (400) exert the power that is close to each other to poker rod (304), with one side two fixedly connected with first air spring (401) between poker rod (304).

4. A brake and drive ganged bar hammer as set forth in claim 3, wherein: the operation structure (400) comprises a door-shaped frame (402) hinged to the mounting seat (201), the door-shaped frame (402) comprises two operation plates (403) rotatably connected with the mounting seat (201) and a connecting rod (404) fixedly connected between the two operation plates (403), the operation plates (403) are provided with two spiral grooves (405) which are arranged in axial symmetry, and the poke rod (304) penetrates through the spiral grooves (405).

5. A brake and drive ganged bar hammer as set forth in claim 4, wherein: the driving structure (700) comprises a center connecting rod (701) which is rotatably connected to a fixed seat (601), two ends of the center connecting rod (701) are respectively hinged with a first connecting rod (702) and a second connecting rod (703), one ends, far away from the center connecting rod (701), of the first connecting rod (702) and the second connecting rod (703) are respectively hinged with two brake pieces (602), the driving structure (700) further comprises a balancing weight (708) which is hung on the center connecting rod (701), the first connecting rod (702) and the second connecting rod (703) which are driven when the balancing weight (708) descends are close to each other, the fixed seat (601) is hinged with a lever (709), and one end of the lever (709) is hinged with the balancing weight (708).

6. A brake and drive ganged bar hammer as set forth in claim 5, wherein: the angle between the first link (702) and the central link (701) is an acute angle α, the angle between the second link (703) and the central link (701) is an acute angle β, and the acute angle α = acute angle β =14 °.

7. A brake and drive ganged bar hammer as set forth in claim 6, wherein: the center connecting rod (701) is obliquely arranged, one end, close to the lower portion, of the center connecting rod (701) is fixedly connected with a pull rope (704), one end, close to the upper portion, of the center connecting rod (701) is rotatably connected with a movable pulley (705), and the pull rope (704) bypasses the movable pulley (705) and is then fixedly connected to a balancing weight (708).

8. A brake and drive ganged bar hammer as set forth in claim 7, wherein: the fixed seat (601) is rotatably connected with a first fixed pulley (706) and a second fixed pulley (707), the first fixed pulley (706) is located above the central connecting rod (701), the second fixed pulley (707) is located below the central connecting rod (701), and the inhaul cable (704) sequentially bypasses the first fixed pulley (706), the second fixed pulley (707) and the movable pulley (705) and then is fixedly connected to the balancing weight (708).

9. A brake and drive ganged bar hammer as set forth in claim 8, wherein: and a second gas spring (606) is arranged between the brake pieces (602), and two ends of the second gas spring (606) are respectively and fixedly connected to the brake bases (603).

10. A brake and drive ganged bar hammer as set forth in claim 9, wherein: brake spare (602) include brake seat (603) of sliding connection in fixing base (601), and brake seat (603) are through bolt fixedly connected with brake block (604), linkage structure (800) are including first gangbar (801) and second gangbar (802), second gangbar (802) and both rotate to be connected are located to first gangbar (801) cover, first gangbar (801) articulate in door type frame (402), second gangbar (802) articulate in lever (709), when lever (709) rotate to the level gyro wheel (302) and brake block (604) all do not contact with hammer stem (101).