CN112456373B - Hoisting accessory is used in assembly type building installation - Google Patents

Abstract

The invention discloses a hoisting device for mounting an assembly type building, which comprises a fixing mechanism, wherein the fixing mechanism mainly comprises a fixing seat, slide rails, connecting rods and a fixing block, the slide rails are fixedly mounted on the outer side of the top of the fixing seat, a plurality of connecting rods are welded between the two slide rails, the center of the inner side of each slide rail is connected with the fixing block through bolts, two hoisting mechanisms are arranged on the inner side of each slide rail, and the two hoisting mechanisms are arranged in a manner of rotating 180 degrees relative to the central axis of the fixing block. The invention can simultaneously lift the object carrying mechanism and the construction platform through two groups of lifting mechanisms, can well cooperate to carry out construction work on the building curtain wall, can also load remote materials through the movable object carrying vehicle, and then fixes the object carrying vehicle on the bottom plate through the connecting mechanism, thereby realizing the lifting operation on the remote materials.

Description

Hoisting accessory is used in assembly type structure installation

Technical Field

The invention relates to the technical field of hoisting devices, in particular to a hoisting device for mounting an assembly type building.

Background

The fabricated building is a building which is formed by transferring a large amount of field operation work in the traditional construction mode to a factory, processing and manufacturing building components and accessories (such as floor slabs, wall slabs, stairs, balconies and the like) in the factory, transporting the components and accessories to a building construction site, and assembling and installing the components and the accessories on the site in a reliable connection mode.

As the prefabricated building is increasingly developed, the connection of the components of the prefabricated building will become frequent and important. In the connection of prefabricated building structural members, the connection between floor slabs and curtain wall slabs is a very common form of connection.

The existing hoisting device can only be a set of hoisting mechanisms in sequence, and the completion cooperation that can not be fine is to building curtain wall construction work, and the hoisting device in addition is for example: chinese patent with publication number CN211141284U discloses a hoisting accessory of quick turnover framework of steel reinforcement, which comprises a base, the inside of base rotates and is connected with the support column, the first gear cover of lower extreme fixedly connected with of support column, the upper end welded connection of support column has the crossbeam, the left end fixedly connected with first rope of connecting plate, and the left lower extreme fixedly connected with lifting hook of connecting plate, the left end of base has been placed and has been placed the board, the upper end fixedly connected with second rope of connecting rod, the second pulley is installed to the rear end of first pulley, and the inner overlap joint of second pulley has the third rope, the rear end of second gear cover is touched there is the driving gear, and the lower extreme fixedly connected with pivot of driving gear, be connected through the belt between driving gear and the first gear cover. However, this device has the following disadvantages: 1. the device is because connecting plate and support column sliding connection, and support column upper end welded connection has the crossbeam, therefore the device can only oscilaltion, consequently the device need utilize other equipment to remove to appointed position after, can accomplish the function of lifting by crane to the material.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a hoisting device for prefabricated building installation.

The invention realizes the purpose through the following technical scheme:

a hoisting device for mounting an assembly type building comprises a fixing mechanism, wherein the fixing mechanism mainly comprises a fixing seat, slide rails, connecting rods and a fixing block, the slide rails are fixedly mounted on the outer side of the top of the fixing seat, a plurality of connecting rods are welded between the two slide rails, the center of the inner side of each slide rail is connected with the fixing block through bolts, each slide rail is internally provided with two hoisting mechanisms, the two hoisting mechanisms rotate 180 degrees relative to the central axis of the fixing block, each hoisting mechanism comprises a lead screw, a motor, a slider, a crane, a first rope, a stabilizing plate, a first hook, a second rope and a second hook, the lead screw is connected to the inner side of each slide rail through a bearing, one end, far away from the fixing block, of the lead screw penetrates through the slide rails and is connected with the motor through a coupler, the outer side of the lead screw is connected with the slider in a threaded manner, the bottom of the slider is connected with the crane through a bolt, the first rope stretches out downwards from the inside of the crane, one end, far away from the first rope, the stabilizing plate is fixedly connected with the first hook through a bolt, the bottom of the second rope is connected with the first hook, the second hook is connected with a loading mechanism, the loading mechanism, and the bottom of a loading mechanism is connected with a good hoisting mechanism, and a good loading mechanism, the bottom of a good construction vehicle is arranged at the bottom of the construction vehicle, the lifting device is characterized in that the object carrying vehicle is arranged at the top of the bottom plate, and a connecting mechanism is further arranged between the object carrying vehicle and the bottom plate, so that long-distance materials can be loaded by moving the object carrying vehicle, and then the object carrying vehicle is fixed on the bottom plate through the connecting mechanism, and the lifting operation of the long-distance materials is realized.

Preferably, the guide assembly comprises a connecting plate, the connecting plate is connected to the top of the crane through a bolt, a threaded hole is formed in one end of the crane far away from the bottom of the connecting plate, a guide rod is screwed in the threaded hole, and the stabilizing plate can be guided through the connecting plate and the guide rod in the threaded hole, so that the stabilizing plate is more stable, and the left-right swinging of the loading mechanism is prevented.

Preferably, the guide rod includes a plurality of small-size guide rods, small-size guide rod top central authorities integrated into one piece have the screw rod, small-size guide rod bottom central authorities joint has the pilot hole, sets up like this and can install the small-size guide rod of suitable quantity according to the construction height, not only can effectual reduction carry the weight of equipment, can also be fine be applicable to different construction heights.

Preferably, the top of the bottom plate is provided with two clamping grooves capable of passing through rollers at the bottom of the loading vehicle, and the clamping grooves can be preliminarily positioned by the arrangement.

Preferably, first recess has been seted up at the support top, the inside bolster that is provided with of first recess, the bolster includes slide bar, end plate, spring, link, the welding of slide bar bottom has the end plate, the slide bar top passes in proper order the spring with the support, and with support sliding connection, and the welding has the link, the buffering that can utilize the spring when lifting by crane through the setting like this reduces the load of second rope and first rope, prevents that first rope and second rope from collapsing absolutely.

Preferably, the support is close to the second recess has been seted up to one side of fixing base, the inside link that is provided with of second recess, the link includes dwang, connecting plate, fixture block, the dwang bottom is in through the round pin hub connection the second recess is inboard, the welding has a plurality of connecting plate between the dwang, the one end that the round pin axle was kept away from to the dwang has through bolted connection the fixture block sets up like this and can the fixture block joint on construction platform, makes things convenient for the workman to take off the inside material of year thing car.

Preferably, the connecting mechanisms are three and are respectively positioned at one end, far away from the handle, of the clamping groove and at two sides of the clamping groove, so that the loading vehicle is more stable on the bottom plate.

Preferably, coupling mechanism includes lower fixed block, last fixed block, bayonet lock, connection rope, the fixed block passes through bolted connection down the bottom plate top, it passes through bolted connection to go up the fixed block and is in on the draw-in groove, the bayonet lock is the U type, and both ends run through respectively go up the fixed block and stretch into down inside the fixed block, the bayonet lock with fixedly connected with between the fixed block down connect the rope, set up like this and peg graft at last fixed block and fixed block inboard down through the bayonet lock for fixed block and last fixed block relatively fixed down, and then realized the fixed function to carrying the thing car.

Preferably, coupling mechanism includes fixed block, last fixed block, connection rope, fly leaf, fixing bolt down, the fixed block passes through bolted connection down the bottom plate top, it passes through bolted connection to go up the fixed block on the draw-in groove, the fixing bolt both ends are connected with through the bearing the fly leaf, the fly leaf lower extreme is passed go up the fixed block, and stretch into down inside the fixed block, and with fixed block threaded connection down, the fly leaf with fixedly connected with between the fixed block down connect the rope, set up like this and can peg graft at last fixed block and fixed block inboard down through fixing bolt to with fixed block spiro union down, make fixed block and last fixed block relatively fixed down, and then realized the fixed function to carrying the thing car.

Preferably, the lower fixing block is far away from one side welding of draw-in groove has the locating plate, just the locating plate top is higher than go up the fixed block bottom, set up like this and can fix a position last fixed block through the locating plate, the convenience is to whole coupling mechanism's assembly.

The technical scheme provided by the invention can have the following beneficial effects:

1. the device can simultaneously hoist the carrying mechanism and the construction platform through two groups of hoisting mechanisms, and can well cooperate to carry out construction work on the building curtain wall;

2. this device can load remote material through removing the year thing car, passes through coupling mechanism to be fixed on the bottom plate afterwards to carrying the thing car, has realized the operation of lifting by crane to remote material.

Additional features of the invention and advantages thereof will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a hoisting device for installation of a fabricated building according to the present invention;

FIG. 2 is a schematic structural diagram of a hoisting mechanism of the hoisting device for prefabricated building installation according to the present invention;

FIG. 3 is a first structural schematic diagram of a loading mechanism of the hoist for prefabricated building installation according to the present invention;

FIG. 4 is a second structural schematic diagram of a loading mechanism of the hoisting device for prefabricated building installation according to the present invention;

FIG. 5 is a schematic structural view of a small guide rod of the hoisting device for prefabricated building installation according to the present invention;

FIG. 6 is a schematic structural diagram of a connecting mechanism of a hoisting device for mounting a fabricated building according to the present invention;

FIG. 7 is a cross-sectional view of a first embodiment of the attachment mechanism of a prefabricated building installation hoist of the present invention;

fig. 8 is a sectional view of a second embodiment of the attachment mechanism of the rigging building installation hoist according to the invention.

The reference numerals are explained below:

1. a fixing mechanism; 2. a hoisting mechanism; 3. a carrying mechanism; 4. a connecting mechanism; 101. a fixed seat; 102. a slide rail; 103. a connecting rod; 104. a fixed block; 201. a lead screw; 202. a motor; 203. a slider; 204. a crane; 205. a first rope; 206. a stabilizing plate; 207. a small guide bar; 208. a connecting plate; 209. a first hook; 210. a second rope; 211. a second hook; 2071. a screw; 2072. an assembly hole; 301. a support; 302. a base plate; 303. a card slot; 304. carrying vehicle; 305. a buffer member; 306. a connecting frame; 3011. a first groove; 3012. a second groove; 3051. a slide bar; 3052. an end plate; 3053. a spring; 3054. hanging a ring; 3061. rotating the rod; 3062. a connecting plate; 3063. a clamping block; 401. a lower fixed block; 402. an upper fixed block; 403. a bayonet lock; 404. connecting ropes; 405. positioning a plate; 41. a movable plate; 42. and (5) fixing the bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example 1

As shown in fig. 1-7, a hoisting device for assembly type building installation comprises a fixing mechanism 1, the fixing mechanism 1 mainly comprises a fixing seat 101, slide rails 102, connecting rods 103 and a fixing block 104, the slide rails 102 are fixedly installed on the outer side of the top of the fixing seat 101, a plurality of connecting rods 103 are welded between the two slide rails 102, the fixing block 104 is connected to the center of the inner side of each slide rail 102 through bolts, two hoisting mechanisms 2 are arranged on the inner side of each slide rail 102, the two hoisting mechanisms 2 rotate 180 degrees relative to the central axis of the fixing block 104, each hoisting mechanism 2 comprises a lead screw 201, a motor 202, a slide block 203, a crane 204, a first rope 205, a stabilizing plate 206, a first hook 209, a second rope 210 and a second hook 211, the lead screw 201 is connected to the inner side of each slide rail 102 through a bearing, one end of the lead screw 201 far away from the fixing block 104 penetrates through the slide rails 102 and is connected with the motor 202 through a coupler, the outer side of the screw 201 is in threaded connection with a sliding block 203, the bottom of the sliding block 203 is connected with a crane 204 through a bolt, a first rope 205 extends downwards from the inside of the crane 204, one end of the first rope 205, which is far away from the crane 204, is fixedly connected with a stabilizing plate 206, the bottom of the stabilizing plate 206 is connected with a first hook 209 through a bolt, the first hook 209 is hung at the central position of a second rope 210, two ends of the second rope 210 are respectively provided with a second hook 211, the bottom of the second hook 211 is provided with a carrying mechanism 3, one end of the stabilizing plate 206, which is far away from the first rope 205, is provided with a guide assembly, so that the carrying mechanism 3 and a construction platform can be simultaneously lifted through two groups of lifting mechanisms 2, the construction work of a building curtain wall can be well matched, the carrying mechanism 3 comprises a support 301, a bottom plate 302 and a carrying vehicle 304, the bottom of the inner side of the support 301 is connected with the bottom plate 302 through a bolt, the top of the base plate 302 is provided with a loading vehicle 304, and a connecting mechanism 4 is arranged between the loading vehicle 304 and the base plate 302, so that the loading vehicle 304 can be moved to load remote materials, and then the loading vehicle 304 is fixed on the base plate 302 through the connecting mechanism 4, so that the hoisting operation of the remote materials is realized, the guide assembly comprises a connecting plate 208, the connecting plate 208 is connected to the top of the crane 204 through bolts, one end of the bottom of the connecting plate 208, which is far away from the crane 204, is provided with a threaded hole, the inside of the threaded hole is screwed with a guide rod, so that the arrangement can guide the stabilizing plate 206 through the connecting plate 208 and the guide rod, so that the stabilizing plate 206 is more stable, and further the loading mechanism 3 is prevented from swinging left and right, the guide rod comprises a plurality of small guide rods 207, a screw 2071 is integrally formed at the center of the top of the small guide rods 207, and an assembly hole 2072 is clamped at the center of the bottom of the small guide rods 207, the small guide rods 207 with proper quantity can be installed according to the construction height, the weight of carrying equipment can be effectively reduced, and the small guide rods can be well applicable to different construction heights, two clamping grooves 303 capable of passing through rollers at the bottom of a loading vehicle 304 are formed in the top of the bottom plate 302, preliminary positioning can be performed on the clamping grooves 303, a first groove 3011 is formed in the top of the support 301, a buffer piece 305 is arranged in the first groove 3011, the buffer piece 305 comprises a sliding rod 3051, an end plate 3052, a spring 3053 and a hanging ring 3054, the end plate 3052 is welded at the bottom of the sliding rod 3051, the spring 3053 and the support 301 penetrate through the top of the sliding rod 3051 in sequence and are connected with the support 301 in a sliding mode, the hanging ring 3054 is welded on the top of the sliding rod 3053, the buffering of the spring 3053 can be utilized during hoisting, the loads of the second rope 210 and the first rope 205 are reduced, and the first rope 205 and the second rope 210 are prevented from breaking, one side of the bracket 301 close to the fixed seat 101 is provided with a second groove 3012, a connecting frame 306 is arranged in the second groove 3012, the connecting frame 306 comprises a rotating rod 3061, a connecting plate 3062 and a clamping block 3063, the bottom of the rotating rod 3061 is connected to the inner side of the second groove 3012 through a pin shaft, a plurality of connecting plates 3062 are welded between the rotating rods 3061, one end of the rotating rod 3061 far away from the pin shaft is connected with the clamping block 3063 through a bolt, the clamping block 3063 can be clamped on the construction platform through the arrangement, a worker can conveniently take down materials in the carrier vehicle 304, three connecting mechanisms 4 are arranged, the three connecting mechanisms 4 are respectively arranged at one end of the clamping groove 303 far away from the handle and two sides of the clamping groove 303, the carrier vehicle 304 is more stable on the bottom plate 302 through the arrangement, and the connecting mechanisms 4 comprise a lower fixing block 401, an upper fixing block 402, clamping pins 403 and connecting ropes 404, lower fixed block 401 passes through bolted connection at bottom plate 302 top, it passes through bolted connection on draw-in groove 303 to go up fixed block 402, bayonet lock 403 is the U type, and both ends run through fixed block 402 respectively and stretch into down inside fixed block 401, bayonet lock 403 and fixedly connected with between the fixed block 401 down connect the rope 404, it can peg graft at last fixed block 402 and fixed block 401 inboard down through bayonet lock 403 to set up like this, make fixed block 401 and last fixed block 402 relatively fixed down, and then realized the fixed function to carrying thing car 304, one side welding that draw-in groove 303 was kept away from to fixed block 401 down has locating plate 405, and the locating plate 405 top is higher than last fixed block 402 bottom, it can fix a position last fixed block 402 through locating plate 405 to set up like this, the convenience is to the assembly of whole coupling mechanism 4.

Example 2

As shown in fig. 8, embodiment 2 differs from embodiment 1 in that: the connecting mechanism 4 comprises a lower fixing block 401, an upper fixing block 402, a connecting rope 404, a movable plate 41 and a fixing bolt 42, the lower fixing block 401 is connected to the top of the bottom plate 302 through a bolt, the upper fixing block 402 is connected to the clamping groove 303 through a bolt, the two ends of the fixing bolt 42 are connected with the movable plate 41 through bearings, the lower end of the movable plate 41 penetrates through the upper fixing block 402 and extends into the lower fixing block 401 and is in threaded connection with the lower fixing block 401, the connecting rope 404 is fixedly connected between the movable plate 41 and the lower fixing block 401, the connecting mechanism can be connected to the inner sides of the upper fixing block 402 and the lower fixing block 401 through the fixing bolt 42 in an inserting mode and is in threaded connection with the lower fixing block 401, the lower fixing block 401 and the upper fixing block 402 are relatively fixed, and the fixing function of the carrier 304 is achieved.

In the structure, when the building curtain wall is installed, firstly, the whole device is installed on the roof, then the construction platform is lifted by using a set of lifting mechanisms 2 close to the fixed seat 101, then the position of the loading mechanism 3 is adjusted according to the selected lifting construction platform, the motor 202 can be started, the motor 202 drives the lead screw 201 to rotate, the lead screw 201 drives the sliding block 203 and the crane 204 to move, further, the loading mechanism 3 is moved, then, the required material is loaded in the loading vehicle 304, the loading vehicle 304 is pushed to the top of the bottom plate 302, the loading vehicle 304 is fixed by using the connecting mechanism 4, then, the crane 204 is started, the crane 204 winds the first rope 205, the first rope 205 drives the stabilizing plate 206 to ascend, the stabilizing plate 206 slides outside the small guide rod 207, further, the stabilizing plate 206 can be prevented from swinging, the stabilizing plate 206 stably drives the second rope 210 to ascend, the second rope 210 drives the loading support 301 to ascend, the support 301 drives the loading vehicle 304 to ascend, the material to stably drive the loading vehicle 304 to ascend until the loading vehicle 304 to a proper height, then, a worker rotates the connecting plate 3062, so that the worker can clamp block 3063 on the construction platform, and can take the material, and clamp block 3063 and clamp the worker can take the material, and then take the material.

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 embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides an assembled hoisting accessory for building installation, includes fixed establishment (1), fixed establishment (1) mainly comprises fixing base (101), slide rail (102), connecting rod (103), fixed block (104), fixing base (101) top outside fixed mounting have slide rail (102), two the welding has a plurality of between slide rail (102) connecting rod (103), slide rail (102) inboard central authorities have through bolted connection fixed block (104), its characterized in that: each inner side of the sliding rail (102) is provided with two hoisting mechanisms (2), the two hoisting mechanisms (2) rotate 180 degrees relative to the central axis of the two fixed blocks (104), each hoisting mechanism (2) comprises a lead screw (201), a motor (202), a sliding block (203), a crane (204), a first rope (205), a stabilizing plate (206), a first hook (209), a second rope (210) and a second hook (211), the lead screw (201) is connected to the inner side of the sliding rail (102) through a bearing, one end, far away from the fixed blocks (104), of the lead screw (201) penetrates through the sliding rail (102) and is connected with the motor (202) through a coupler, the sliding block (203) is connected to the outer side of the lead screw (201) in a threaded manner, the bottom of the sliding block (203) is connected with the crane (204) through a bolt, the first rope (205) extends downwards inside the crane (204), one end, far away from the crane (204), of the first rope (205) is fixedly connected with the stabilizing plate (206), the bottom of the stabilizing plate (206) is connected with the first hook (209) through a bolt, the second hook (209) is arranged at the central axis of the second hook (210), second couple (211) bottom is provided with carries thing mechanism (3), stabilizer plate (206) are kept away from the one end of first rope (205) is provided with the direction subassembly, it includes support (301), bottom plate (302), carries thing car (304) to carry thing mechanism (3), there is bottom the inboard of support (301) through bolted connection bottom plate (302), bottom plate (302) top is provided with carry thing car (304), just carry thing car (304) with still be provided with coupling mechanism (4) between bottom plate (302).

2. The hoisting device for assembly type building installation according to claim 1, wherein: the guide assembly comprises a connecting plate (208), the connecting plate (208) is connected to the top of the crane (204) through a bolt, a threaded hole is formed in one end, far away from the crane (204), of the bottom of the connecting plate (208), and a guide rod is screwed in the threaded hole.

3. The hoisting device for assembly type building installation according to claim 2, wherein: the guide bar includes small-size guide bar (207) of a plurality of, small-size guide bar (207) top central authorities integrated into one piece has screw rod (2071), small-size guide bar (207) bottom central authorities joint has pilot hole (2072).

4. A mounting hoist for prefabricated buildings according to claim 3, characterized in that: the top of the bottom plate (302) is provided with two clamping grooves (303) capable of passing through rollers at the bottom of the carrying vehicle (304).

5. The hoisting device for assembly type building installation according to claim 1, wherein: first recess (3011) have been seted up at support (301) top, inside bolster (305) that is provided with of first recess (3011), bolster (305) include slide bar (3051), end plate (3052), spring (3053), link (3054), the welding of slide bar (3051) bottom has end plate (3052), slide bar (3051) top is passed in proper order spring (3053) with support (301), and with support (301) sliding connection, and the welding has link (3054).

6. The hoisting device for assembly type building installation according to claim 1, wherein: support (301) are close to second recess (3012) have been seted up to one side of fixing base (101), second recess (3012) inside link (306) that is provided with, link (306) are including dwang (3061), connecting plate (3062), fixture block (3063), dwang (3061) bottom is through the round pin hub connection second recess (3012) inboard, the welding has a plurality of connecting plate (3062) between dwang (3061), there is fixture block (3063) through bolted connection dwang (3061) one end of keeping away from the round pin axle.

7. The hoisting device for assembly type building installation according to claim 4, wherein: the number of the connecting mechanisms (4) is three, and the three connecting mechanisms (4) are respectively located at one end, away from the handle, of the clamping groove (303) and at two sides of the clamping groove (303).

8. The hoisting device for assembly type building installation according to claim 7, wherein: coupling mechanism (4) are including lower fixed block (401), last fixed block (402), bayonet lock (403), connect rope (404), fixed block (401) passes through bolted connection down bottom plate (302) top, it passes through bolted connection to go up fixed block (402) on draw-in groove (303), bayonet lock (403) are the U type, and both ends run through respectively go up fixed block (402) and stretch into down inside fixed block (401), bayonet lock (403) with fixedly connected with between lower fixed block (401) connect rope (404).

9. The hoisting device for assembly type building installation according to claim 7, wherein: coupling mechanism (4) are including lower fixed block (401), go up fixed block (402), connect rope (404), fly leaf (41), fixing bolt (42), fixed block (401) is in through bolted connection down bottom plate (302) top, it passes through bolted connection to go up fixed block (402) on draw-in groove (303), fixing bolt (42) both ends are connected with through the bearing fly leaf (41), fly leaf (41) lower extreme passes go up fixed block (402), and stretch into fixed block (401) are inside down, and with fixed block (401) threaded connection down, fly leaf (41) with fixedly connected with between lower fixed block (401) connect rope (404).

10. A mounting hoist for prefabricated buildings according to claim 8 or 9, characterized in that: one side, far away from the clamping groove (303), of the lower fixing block (401) is welded with a positioning plate (405), and the top of the positioning plate (405) is higher than the bottom of the upper fixing block (402).

Images