CN210387816U

CN210387816U - Speed-adjustable steel plate cutting device for building

Info

Publication number: CN210387816U
Application number: CN201921409785.2U
Authority: CN
Inventors: 吴欣洋
Original assignee: Qingdao Wechat Information Consulting Co Ltd
Current assignee: Qingdao Wechat Information Consulting Co Ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-04-24
Anticipated expiration: 2029-08-28

Abstract

The utility model discloses a speed-adjustable steel plate cutting device for buildings, which comprises a workbench, four supporting legs are respectively and fixedly arranged at four corners of the bottom end of the workbench, the workbench is in an inclined arrangement, a sloping platform is arranged under the workbench, the bottom ends of the four supporting legs are respectively and fixedly connected with four corners of the top end of the sloping platform, a collecting box is arranged at one side of the sloping platform, a hydraulic cylinder is fixedly arranged at the top end of the sloping platform, the hydraulic cylinder is in an inclined arrangement, the inclination angle of the hydraulic cylinder is the same as that of the workbench, a cutter box is fixedly arranged at the top end of the hydraulic cylinder, the device rotates a handle through an operator, thereby achieving the purpose of uniformly controlling the cutting of a steel plate, when the steel plate is heavier, the falling speed of the device can be slowed down, the abrasion of an annular cutter and a cutting motor is reduced, thereby indirectly prolonging the service life of the device, the cutting machine is simple and convenient to operate, easy to replace, capable of indirectly improving the working efficiency, and strong in cutting stability.

Description

Speed-adjustable steel plate cutting device for building

Technical Field

The utility model relates to a building field, concretely relates to adjustable speed steel sheet cutting device for building.

Background

In current building construction process, the steel sheet often need carry out secondary operation in the use, at this moment will use steel sheet cutting device, but current steel sheet cutting device need all rely on the manpower to promote the steel sheet and cut, the power of promotion can't be mastered evenly, and the steel sheet is all comparatively heavy, very big increase workman's intensity of labour, in addition the cutting wheel is mostly all adopted one, and stability is not good, when needs cut the billet of uniform size, can't accomplish efficiently, stable cutting, influence work efficiency.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem of the existence, the utility model provides a speed-adjustable steel sheet cutting device for building.

The utility model discloses a realize through following technical scheme:

the utility model provides a speed-adjustable steel sheet cutting device for building, includes the workstation, workstation bottom four corners department fixed mounting respectively has four landing legs, the workstation is slope setting, its characterized in that: a sloping table is arranged under the workbench, the bottom ends of four supporting legs are respectively fixedly connected with four corners of the top end of the sloping table, a collecting box is arranged on one side of the sloping table, a hydraulic cylinder is fixedly arranged on the top end of the sloping table and is obliquely arranged, the inclination angle of the hydraulic cylinder is the same as that of the workbench, a cutter box is fixedly arranged on the top end of the hydraulic cylinder, two transverse plates are respectively fixedly arranged on two sides of the bottom end of the cutter box, a T-shaped cover is inserted into one side of the cutter box, bolts are respectively screwed on two sides of the T-shaped cover, two sliding grooves are respectively and symmetrically arranged in two sides of the cutter box, a sliding plate is connected in the cutter box in a sliding manner, a cutting motor is fixedly arranged on the top end of the sliding plate, a rotating shaft is fixedly arranged at the output end of the cutting motor, two clamping grooves, two ends of the stabilizing sleeve are respectively and symmetrically fixedly connected with two fixing rods, the two fixing rods respectively extend into the two sliding chutes and are in sliding connection with the sliding chutes, the inner wall of the fixing sleeve is symmetrically and fixedly connected with two clamping blocks, the clamping blocks extend into the clamping grooves and are in sliding connection with the clamping grooves, the outer wall of the fixing sleeve is fixedly provided with an annular cutter, the other end of the rotating shaft extends into the inner wall of one side of the T-shaped cover and is in rotating connection with the rotating shaft, the rotating shaft is in sliding connection with the T-shaped cover, a rotatable rotating block is embedded into the inner wall of one side of the sliding plate, one side of the cutter box is in threaded connection with an adjusting screw rod, one end of the adjusting screw rod extends into the inner wall of one side of the sliding plate and is fixedly connected with one end of the rotating block, one side of the top end of the workbench is provided with a, the inclination angle of the second sleeve is the same as that of the workbench, a second sliding block is connected in the second sleeve in a sliding manner, a second spring is arranged in the second sleeve, the top end of the second spring is fixedly connected with the bottom end of the second sliding block, the bottom end of the second spring is fixedly connected with the inner bottom surface of the second sleeve, a second sliding rod is fixedly arranged at the top end of the second sliding block, the top end of the second sliding rod penetrates through the second sleeve and is connected with the second sleeve in a sliding manner, a pedal plate is fixedly arranged on the side wall of one penetrating end of the second sliding rod, an L-shaped plate is fixedly arranged at the top end of the second sliding rod, a plurality of first sleeves are uniformly and fixedly arranged on one side of the inner wall of the L-shaped plate, a first sliding block is connected in the first sleeve in a sliding manner, a first spring is arranged in the first sleeve, one end of the first spring, the other end of the first sliding block is fixedly connected with a first sliding rod, the other end of the first sliding rod penetrates through the first sleeve and is in sliding connection with the first sleeve, a sliding plate is fixedly connected between the penetrating ends of a plurality of first sliding rods, the bottom end of the sliding plate is attached to the top end of the L-shaped plate, a second through groove is arranged on the workbench and is opposite to the L-shaped plate, a plurality of first rolling balls capable of rolling are respectively and uniformly embedded in the top ends of the L-shaped plate and the sliding plate, two baffle plates with the same size are respectively arranged on two sides of the top end of the workbench, two sliding grooves are respectively arranged on the top ends of the two baffle plates, two L-shaped blocks are respectively attached to one side of the two baffle plates, two sliding blocks are respectively and slidably connected in the two sliding grooves, a square rod is fixedly connected between the two L-shaped blocks, the T-shaped threaded rod is connected onto the clamping plate in a threaded manner, the bottom end of the T-shaped threaded rod is fixedly connected with a clamping block, the L-shaped block is connected with a locking screw in a threaded manner, two movable grooves are symmetrically formed in the side walls of the two baffles respectively, the opposite ends of the two locking screws penetrate through the two movable grooves and extend into the space between the two baffles respectively, two locking blocks are arranged between the two baffles, a rotatable rotating disc is embedded into the locking blocks, the opposite ends of the two locking screws respectively extend into the two locking blocks and are fixedly connected with one ends of the two rotating discs, the locking screws are rotatably connected with the locking blocks, a plurality of second balls are uniformly embedded into one side of the top end of the workbench, two limiting plates are fixedly mounted at the two ends of one baffle respectively, a screw is arranged between the two limiting plates, one end of the screw penetrates through one L-shaped block and, the utility model discloses a disc-shaped handle, including limiting plate, disc, screw rod and two limiting plates, screw rod one end stretch into in the limiting plate with disc one end fixed connection, the screw rod other end passes another limiting plate and rather than swivelling joint, screw rod and two limiting plate swivelling joint, the screw rod is worn out one end fixed mounting and is had the handle, the handle is the disc handle.

Preferably, the length and width of the second through groove are the same as those of the L-shaped plate.

Preferably, the stabilizing sleeves are all the same in size and shape and made of hard alloy materials, such as alloy steel.

Preferably, the workbench is fixedly connected with the supporting legs through welding.

Compared with the prior art, the beneficial effects of the utility model are that: this device rotates the handle through the operation workman to reach the even control steel sheet and cut, when the steel sheet is heavier, can make its falling speed slow down, reduce the wearing and tearing to annular cutter and cutting motor, thereby the life of this device of indirect increase, and accomplish the change to the cutter through the form of a plurality of stable sleeve concatenations, its easy operation is convenient, and it is easy to change, indirect improvement work efficiency, the stability of cutting is stronger.

Drawings

Fig. 1 is a front view of the structure of the present invention;

fig. 2 is a top view of the structure of the present invention;

FIG. 3 is a cross-sectional view of structure A-A of the present invention;

fig. 4 is a side view of the structure shaft of the present invention;

fig. 5 is a side view of the structural fixing sleeve of the present invention;

fig. 6 is a side view of the structurally stable sleeve of the present invention;

fig. 7 is a side view of the structural toolbox of the present invention.

In the figure: the cutting machine comprises a workbench 1, a first through groove 2, supporting legs 3, a sloping platform 4, a collecting box 5, a hydraulic cylinder 6, a cutter box 7, a transverse plate 8, a T-shaped cover 9, a sliding groove 10, a fixing rod 11, a stabilizing sleeve 12, a ring-shaped cutter 13, a clamping block 14, a clamping groove 15, a rotating shaft 16, a cutting motor 17, a sliding plate 18, a rotating block 19, an adjusting screw 20, a second through groove 21, an L-shaped plate 22, a first sleeve 23, a first spring 24, a first sliding block 25, a first sliding rod 26, a first ball 27, a pedal plate 28, a second sleeve 29, a second sliding block 30, a second spring 31, a second sliding rod 32, a baffle plate 33, a sliding groove 34, a sliding block 35, a square rod 36, a square sleeve 37, a clamping plate 38, a T-shaped threaded rod 39, a clamping block 40, a locking screw 41, a locking block 42, a rotating disc 43, a second ball 44, an L-shaped block 45, a limiting plate 46, A fixed sleeve 51 and a sliding plate 52.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, and fig. 7, a speed-adjustable steel plate cutting device for building includes a workbench 1, four supporting legs 3 are respectively and fixedly mounted at four corners of the bottom end of the workbench 1, the workbench 1 is obliquely arranged, and is characterized in that: a sloping table 4 is arranged under the workbench 1, the bottom ends of four supporting legs 3 are respectively fixedly connected with four corners of the top end of the sloping table 4, a collecting box 5 is placed at one side of the sloping table 4, a hydraulic cylinder 6 is fixedly installed at the top end of the sloping table 4, the hydraulic cylinder 6 is arranged in an inclined manner, the inclined angle of the hydraulic cylinder 6 is the same as that of the workbench 1, a cutter box 7 is fixedly installed at the top end of the hydraulic cylinder 6, two transverse plates 8 are respectively and fixedly installed at two sides of the bottom end of the cutter box 7, a T-shaped cover 9 is inserted into one side of the cutter box 7, bolts are respectively screwed at two sides of the T-shaped cover 9, two sliding grooves 10 are respectively and symmetrically arranged in two sides of the cutter box 7, a sliding plate 18 is connected in the cutter box 7 in a sliding manner, a cutting motor 17, two clamping grooves 15 are symmetrically arranged on two sides of the rotating shaft 16, a plurality of stabilizing sleeves 12 and fixing sleeves 51 are uniformly sleeved on the rotating shaft 16, two fixing rods 11 are symmetrically and fixedly connected to two ends of the stabilizing sleeves 12 respectively, the two fixing rods 11 extend into and are slidably connected with two sliding grooves 10 respectively, two clamping blocks 14 are symmetrically and fixedly connected to the inner wall of the fixing sleeve 51, the clamping blocks 14 extend into and are slidably connected with the clamping grooves 15, an annular cutter 13 is fixedly installed on the outer wall of the fixing sleeve 51, the other end of the rotating shaft 16 extends into and is rotatably connected with the inner wall of one side of the T-shaped cover 9, the rotating shaft 16 is slidably connected with the T-shaped cover 9, a rotatable rotating block 19 is embedded in the inner wall of one side of the sliding plate 18, an adjusting screw 20 is screwed on one side of the cutter box 7, one end of the adjusting screw 20 extends into the inner wall of one side of the sliding plate 18 and is, a first through groove 2 is formed in one side of the top end of the workbench 1, the cutter box 7 is arranged opposite to the first through groove 2, a second sleeve 29 is fixedly mounted at the top end of the inclined table 4, the second sleeve 29 is arranged in an inclined manner, the inclined angle of the second sleeve 29 is the same as that of the workbench 1, a second slider 30 is connected in the second sleeve 29 in a sliding manner, a second spring 31 is arranged in the second sleeve 29, the top end of the second spring 31 is fixedly connected with the bottom end of the second slider 30, the bottom end of the second spring 31 is fixedly connected with the inner bottom surface of the second sleeve 29, a second slide bar 32 is fixedly mounted at the top end of the second slider 30, the top end of the second slide bar 32 penetrates through the second sleeve 29 and is connected with the second sleeve in a sliding manner, a pedal plate 28 is fixedly mounted on the side wall of one end of the second slide bar 32, an L-shaped plate 22 is fixedly mounted at the top end of the second slide bar 32, a first sliding block 25 is connected in the first sleeve 23 in a sliding manner, a first spring 24 is arranged in the first sleeve 23, one end of the first spring 24 is fixedly connected with one end of the first sliding block 25, the other end of the first spring 24 is fixedly connected with one side of the inner wall of the first sleeve 23, the other end of the first sliding block 25 is fixedly connected with a first sliding rod 26, the other end of the first sliding rod 26 penetrates through the first sleeve 23 and is connected with the first sleeve in a sliding manner, a sliding plate 52 is fixedly connected between the penetrating ends of a plurality of first sliding rods 26, the bottom end of the sliding plate 52 is attached to the top end of the L-shaped plate 22, a second through groove 21 is arranged on the workbench 1, the second through groove 21 is arranged opposite to the L-shaped plate 22, a plurality of first rolling balls 27 are respectively and uniformly embedded into the top ends of the L-shaped plate 22 and the sliding plate 52, two, the top ends of the two baffle plates 33 are respectively provided with two sliding grooves 34, one side of each of the two baffle plates 33 is respectively provided with two L-shaped blocks 45 in a laminating manner, the two sliding grooves 34 are respectively connected with two sliding blocks 35 in a sliding manner, a square rod 36 is fixedly connected between the two L-shaped blocks 45, the square rod 36 is connected with a plurality of square sleeves 37 in a sliding manner, one side of each square sleeve 37 is fixedly connected with a clamping plate 38, a T-shaped threaded rod 39 is screwed on the clamping plate 38, a clamping block 40 is fixedly connected with the bottom end of the T-shaped threaded rod 39, locking screws 41 are screwed on the L-shaped blocks 45, two movable grooves 49 are respectively and symmetrically arranged on the side walls of the two baffle plates 33, one opposite ends of the two locking screws 41 respectively penetrate through the two movable grooves 49 and extend into the space between the two baffle plates 33, two locking blocks 42 are arranged, two relative one ends of locking screw 41 stretch into respectively in two latch segments 42 with two rotary disk 43 one end fixed connection, locking screw 41 and latch segments 42 swivelling joint, 1 top one side of workstation evenly imbeds has a plurality of second balls 44, and wherein the baffle 33 both ends of one side fixed mounting respectively have two limiting plates 46, is equipped with screw 47 between two limiting plates 46, one of them L type piece 45 is passed to screw 47 one end and rather than the spiro union, and the embedding has disc 50 that can rotate in one of them limiting plate 46, screw 47 one end stretch into in the limiting plate 46 with disc 50 one end fixed connection, the screw 47 other end passes another limiting plate 46 and rather than swivelling joint, screw 47 and two limiting plate 46 swivelling joint, one end fixed mounting is worn out to screw 47 has handle 48, handle 48 is the disc handle.

The length and the width of the second through groove 21 are the same as those of the L-shaped plate 22.

The stabilizing sleeves 12 are all of the same size and shape and are made of cemented carbide material, such as alloy steel.

The workbench 1 is fixedly connected with the supporting legs 3 through welding.

The working principle is as follows: firstly, the device is placed in a working area, when a steel plate needs to be cut, the steel plate is firstly placed on a workbench 1, because the workbench 1 is obliquely arranged, and a plurality of second balls 44 are arranged on the workbench 1, the steel plate can automatically slide downwards, when the steel plate slides to one side and is attached to a sliding plate 52, because a plurality of first sleeves 23 are arranged on an L-shaped plate 22, the falling weight of the steel plate can enable the sliding plate 52 to drive a first sliding rod 26 to extrude a first spring 24 in the first sleeve 23, so that a buffering effect is achieved, the steel plate is temporarily stopped on the workbench 1, at the moment, two locking screws 41 are rotated, so that two locking blocks 42 clamp two sides of the steel plate, and simultaneously, a T-shaped threaded rod 39 on a clamping plate 38 is rotated, so that the clamping block 40 clamps the steel plate from the upper side, and the clamping work of the steel plate is completed, then, the cutter is configured, after the cutting width of the steel plate is determined, the T-shaped cover 9 is rotated, the cutter box 7 is opened from one side, because the size and the length of the stabilizing sleeves 12 are the same, the determination of the cutting width can be completed according to different numbers of stabilizing sleeves 12, after the number is determined, because the clamping grooves 15 are arranged on the rotating shaft 16, the fixing sleeves 51 are fixedly arranged on the inner walls of the annular cutters 13, the clamping blocks 14 are fixedly arranged on the inner walls of the fixing sleeves 51, the placing and the fixing of the annular cutters 13 are facilitated, because the fixing rods 11 are fixedly arranged at two ends of the stabilizing sleeves 12, the fixing rods 11 slide into the sliding grooves 10 at two sides of the cutter box 7, the stability of the rotating shaft 16 during rotation can be increased, after the cutter is configured, the bolts on the T-shaped cover 9 are rotated, the T-shaped cover 9 is covered, and the configuration of the cutter, after the configuration is completed, the cutting motor 17 is connected with an external power supply, so that the cutting motor 17 is started to drive the rotating shaft 16 to rotate, the annular cutter 13 is driven to rotate together due to the arrangement of the clamping block 14 and the clamping groove 15, at the moment, an operator downwards steps on the pedal plate 28, so that the second sliding rod 32 drives the second sliding block 30 to compress the second spring 31 in the second sleeve 29, the L-shaped plate 22 descends, the movement of the steel plate is not hindered, so that the handle 48 is slowly rotated by one hand of the operator, the screw rod 47 is driven to rotate, the L-shaped blocks 45 move, the two L-shaped blocks 45 are connected through the square rod 36, the two L-shaped blocks 45 can synchronously move, the steel plate is cut at a constant speed, the second ball 44 is arranged at the top end of the L-shaped plate 22 and the top end of the sliding plate 52, the advancing of the plate is not influenced, and the handle 48 is rotated by, thereby reach the even control steel sheet and cut, when the steel sheet is heavier, can be so that its falling speed slows down, reduce the wearing and tearing to annular cutter 13 and cutting motor 17 to indirect increase this device's life, and accomplish the change to the cutter through the form of a plurality of stable sleeve 12 concatenations, its easy operation is convenient, and it is easy to change, indirect improvement work efficiency, the stability of cutting is stronger.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a speed-adjustable steel sheet cutting device for building, includes workstation (1), workstation (1) bottom four corners department fixed mounting respectively has four landing legs (3), workstation (1) is slope setting, its characterized in that: an inclined table (4) is arranged under the workbench (1), the bottoms of four support legs (3) are fixedly connected with four corners of the top of the inclined table (4) respectively, a collecting box (5) is placed on one side of the inclined table (4), a hydraulic cylinder (6) is fixedly mounted on the top of the inclined table (4), the hydraulic cylinder (6) is arranged in an inclined manner, the inclined angle of the hydraulic cylinder (6) is the same as that of the workbench (1), a cutter box (7) is fixedly mounted on the top of the hydraulic cylinder (6), two transverse plates (8) are fixedly mounted on two sides of the bottom of the cutter box (7) respectively, a T-shaped cover (9) is inserted into one side of the cutter box (7), bolts are respectively screwed on two sides of the T-shaped cover (9), two sliding chutes (10) are respectively and symmetrically arranged in two sides of the cutter box (7), and a sliding plate (18) is slidably connected, the cutting mechanism is characterized in that a cutting motor (17) is fixedly installed at the top end of the sliding plate (18), a rotating shaft (16) is fixedly installed at the output end of the cutting motor (17), two clamping grooves (15) are symmetrically formed in two sides of the rotating shaft (16), a plurality of stabilizing sleeves (12) and fixing sleeves (51) are uniformly sleeved on the rotating shaft (16), two fixing rods (11) are symmetrically and fixedly connected to two ends of each stabilizing sleeve (12) respectively, the two fixing rods (11) extend into the two sliding grooves (10) respectively and are in sliding connection with the two sliding grooves, two clamping blocks (14) are symmetrically and fixedly connected to the inner wall of each fixing sleeve (51), the clamping blocks (14) extend into the clamping grooves (15) and are in sliding connection with the clamping grooves, an annular cutter (13) is fixedly installed on the outer wall of each fixing sleeve (51), and the other end of the rotating shaft (16) extends into the inner, the rotary shaft (16) is connected with the T-shaped cover (9) in a sliding manner, a rotary block (19) capable of rotating is embedded in the inner wall of one side of the sliding plate (18), an adjusting screw (20) is screwed on one side of the cutter box (7), one end of the adjusting screw (20) extends into the inner wall of one side of the sliding plate (18) and is fixedly connected with one end of the rotary block (19), a first through groove (2) is formed in one side of the top end of the workbench (1), the cutter box (7) is arranged opposite to the first through groove (2), a second sleeve (29) is fixedly installed at the top end of the ramp (4), the second sleeve (29) is arranged in an inclined manner, the inclined angle of the second sleeve (29) is the same as that of the workbench (1), a second sliding block (30) is connected in the second sleeve (29) in a sliding manner, a second spring (31) is arranged in the second sleeve (29), and the top end of the second spring (31) is fixedly connected with, the bottom end of the second spring (31) is fixedly connected with the inner bottom surface of the second sleeve (29), the top end of the second sliding block (30) is fixedly provided with a second sliding rod (32), the top end of the second sliding rod (32) penetrates out of the second sleeve (29) and is in sliding connection with the second sleeve, the side wall of one penetrating end of the second sliding rod (32) is fixedly provided with a pedal (28), the top end of the second sliding rod (32) is fixedly provided with an L-shaped plate (22), one side of the inner wall of the L-shaped plate (22) is uniformly and fixedly provided with a plurality of first sleeves (23), the first sleeve (23) is internally and slidably connected with a first sliding block (25), the first sleeve (23) is internally provided with a first spring (24), one end of the first spring (24) is fixedly connected with one end of the first sliding block (25), and the other end of the first spring (24) is fixedly connected with one side, the other end of the first sliding block (25) is fixedly connected with a first sliding rod (26), the other end of the first sliding rod (26) penetrates through the first sleeve (23) and is in sliding connection with the first sleeve, a plurality of first sliding rods (26) penetrate through one ends and are fixedly connected with a sliding plate (52), the bottom end of the sliding plate (52) is attached to the top end of the L-shaped plate (22), a second through groove (21) is formed in the workbench (1), the second through groove (21) is opposite to the L-shaped plate (22), a plurality of first rolling balls (27) capable of rolling are uniformly embedded into the top ends of the L-shaped plate (22) and the sliding plate (52) respectively, two baffles (33) with the same size are installed on two sides of the top end of the workbench (1) respectively, two sliding grooves (34) are formed in the top ends of the two baffles (33), and two L-shaped blocks (45), two sliders (35) are respectively connected in the two sliding grooves (34) in a sliding manner, a square rod (36) is fixedly connected between the two L-shaped blocks (45), a plurality of square sleeves (37) are connected on the square rod (36) in a sliding manner, a clamping plate (38) is fixedly connected on one side of each square sleeve (37), a T-shaped threaded rod (39) is screwed on the clamping plate (38), a clamping block (40) is fixedly connected at the bottom end of the T-shaped threaded rod (39), a locking screw (41) is screwed on the L-shaped blocks (45), two movable grooves (49) are respectively symmetrically arranged on the side walls of the two baffles (33), one opposite ends of the two locking screws (41) respectively penetrate through the two movable grooves (49) and extend into the space between the two baffles (33), two locking blocks (42) are arranged between the two baffles (33), and a rotary disk (43) capable of rotating is embedded in the locking blocks (42, two locking screw (41) relative one end stretch into respectively in two latch segments (42) with two rotary disk (43) one end fixed connection, locking screw (41) and latch segment (42) swivelling joint, workstation (1) top one side evenly imbeds and has had a plurality of second ball (44), and wherein baffle (33) both ends of one side fixed mounting respectively has two limiting plate (46), is equipped with screw rod (47) between two limiting plate (46), one end of screw rod (47) is passed one of them L type piece (45) and is rather than the spiro union, and embedding has disc (50) that can rotate in one of them limiting plate (46), screw rod (47) one end stretches into in limiting plate (46) and disc (50) one end fixed connection, the screw rod (47) other end passes another limiting plate (46) and rather than swivelling joint, screw rod (47) and two limiting plate (46) swivelling joint, one end of the screw rod (47) penetrating out is fixedly provided with a handle (48), and the handle (48) is a disc-shaped handle.

2. The speed-adjustable steel plate cutting device for buildings according to claim 1, wherein: the length and the width of the second through groove (21) are the same as those of the L-shaped plate (22).

3. The speed-adjustable steel plate cutting device for buildings according to claim 1, wherein: the stabilizing sleeves (12) are identical in size and shape and are made of hard alloy materials such as alloy steel.

4. The speed-adjustable steel plate cutting device for buildings according to claim 1, wherein: the workbench (1) is fixedly connected with the supporting legs (3) through welding.