CN213351150U

CN213351150U - Mounting equipment of reinforced concrete protective door

Info

Publication number: CN213351150U
Application number: CN202022288465.5U
Authority: CN
Inventors: 李伟; 李金文; 汪国涛
Original assignee: Fuyang Pengcheng Civil Air Defense Engineering Protection Equipment Co ltd
Current assignee: Fuyang Pengcheng Civil Air Defense Engineering Protection Equipment Co ltd
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-06-04
Anticipated expiration: 2030-10-13

Abstract

The application relates to mounting equipment of a reinforced concrete protective door, which comprises a machine body, a welding gun and a wire feeding device, wherein the welding gun and the wire feeding device are arranged on the machine body; a connecting shaft is mounted on the connecting plate, the wire feeding disc is sleeved on the connecting shaft, a limiting sleeve is arranged at the end part of the connecting shaft, and a limiting part for fixing the position of the limiting sleeve is arranged on the limiting sleeve; the connecting disc is provided with a rotating shaft, the rotating shaft is rotatably installed on the supporting plate, one end, far away from the connecting disc, of the rotating shaft extends to the outside of the supporting plate, and a positioning piece for fixing the rotating shaft is arranged on the rotating shaft. This application has the change of being convenient for send the silk dish, promotes work efficiency's effect.

Description

Mounting equipment of reinforced concrete protective door

Technical Field

The application relates to the technical field of mounting equipment, in particular to mounting equipment of a reinforced concrete protective door.

Background

At present, when the reinforced concrete protective door is installed and constructed on site, the assembly and the connection of each component are required, and welding equipment is used for welding metal components under many conditions.

The carbon dioxide protection welding machine disclosed as the patent application document with the publication number of CN207914759U in the related art comprises a welding gun, a welding machine assembly, a wire feeding device, a sliding base and a gas storage tank, wherein the welding machine assembly and the wire feeding device are installed on the sliding base, an external power supply is connected with the welding machine assembly, carbon dioxide gas is stored in the gas storage tank, the welding gun is connected with the welding machine assembly, the gas storage tank and the wire feeding device through a wire tube bundle respectively, a steel wire rope is arranged outside the wire tube bundle, two ends of the steel wire rope are connected with the welding gun and the sliding base respectively, and the length of the steel wire rope is smaller than that of the wire tube. The utility model discloses be connected welder with the spool bundle with other parts, improve the joint strength of welder and all the other parts, set up in addition and slide the base and set up welding machine assembly and thread feeding unit on it, make things convenient for welding machine assembly and thread feeding unit to remove along with the people, and set up the wire rope and can the workman pull by the wire rope atress when welding machine assembly and thread feeding unit through welder.

In view of the above related technologies, the inventor believes that there are drawbacks that when a welding device performs welding, a wire feeding disc needs to be used for feeding wires, and after the welding wires on the wire feeding disc are used, the wire feeding disc needs to be replaced, so that the replacement of the wire feeding disc in the related technologies is inconvenient, and the work efficiency is affected.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the change of sending the silk dish, promote work efficiency, this application provides a reinforced concrete guard gate's erection equipment.

The application provides a reinforced concrete guard gate's erection equipment adopts following technical scheme:

the mounting equipment of the reinforced concrete protective door comprises a machine body, a welding gun and a wire feeding device, wherein the welding gun and the wire feeding device are arranged on the machine body; a connecting shaft is mounted on the connecting plate, the wire feeding disc is sleeved on the connecting shaft, a limiting sleeve is arranged at the end part of the connecting shaft, and a limiting part for fixing the position of the limiting sleeve is arranged on the limiting sleeve; the connecting disc is provided with a rotating shaft, the rotating shaft is rotatably installed on the supporting plate, one end, far away from the connecting disc, of the rotating shaft extends to the outside of the supporting plate, and a positioning piece for fixing the rotating shaft is arranged on the rotating shaft.

By adopting the technical scheme, a wire feeding frame is additionally arranged, a mechanism is used for installing wire feeding discs, a plurality of connecting plates are arranged on the wire feeding frame, the wire feeding discs are installed on connecting shafts on the connecting plates, the wire feeding discs are installed on the wire feeding frame, proper wire feeding discs are selected for feeding wires, and after the use of the welding wires on one wire feeding disc is finished, the adjacent wire feeding discs are close to wire feeding rollers by rotating the wire feeding frame and used for feeding the welding wires; the wire feeding disc is convenient to replace, the wire feeding disc does not need to be frequently disassembled and re-assembled, the wire feeding disc is convenient to replace, and the working efficiency is improved; the wire feeding discs can be disassembled after all the welding wires on the wire feeding discs are consumed; the structure that has used the stop collar can carry out spacing of spacing dish, and the structure that uses the setting element can carry out spacing of pivot, the rotation of restriction wire feeding dish.

Preferably, the positioning element comprises a positioning ring sleeved on the rotating shaft, the positioning ring slides along the length direction of the rotating shaft, a fixing ring is fixedly arranged outside the rotating shaft, a movable rod is slidably mounted on the fixing ring, one end of the movable rod is connected with the positioning ring, the other end of the movable rod extends to the outside of the fixing ring, a positioning spring is sleeved on the movable rod, and two ends of the positioning spring are respectively connected with the positioning ring and the fixing ring; the supporting plate is provided with a first clamping tooth which is arranged in a circular array by taking the axis of the rotating shaft as the center, and the positioning ring is provided with a second clamping tooth matched with the first clamping tooth.

By adopting the technical scheme, the structure of the fixing ring of the positioning ring is increased, the movable rod is slidably mounted on the fixing ring and can drive the positioning ring to move when moving, so that the second clamping tooth on the positioning ring is separated from the first clamping tooth on the supporting plate, and the rotating shaft and the wire feeding frame can rotate; after loosening, the positioning ring can move towards the direction of the first clamping tooth under the action of the positioning spring, so that the first clamping tooth and the second clamping tooth are mutually matched, the limitation on the connecting shaft is realized, and the wire feeding frame can not rotate any more.

Preferably, the movable rod is provided with two positions on the fixed ring, the two positions of the movable rod are symmetrically arranged by taking the axis of the rotating shaft as the center, and a connecting rod is connected between the end parts of the movable rods far away from the positioning ring.

Through adopting above-mentioned technical scheme, set up the movable rod into two places to two movable rod symmetry sets up, can drive two movable rods and remove simultaneously when carrying out the removal of connecting rod, make the atress of holding ring more even.

Preferably, offer on the stop collar with connecting axle tip complex holding tank, the spacing groove has been seted up to the inner wall of holding tank, and the locating part includes the stopper of movable mounting in the spacing groove, and the stopper tip extends to the spacing inslot portion, is provided with on the connecting axle with stopper tip complex draw-in groove, the stopper is connected with the piece that resets.

Through adopting above-mentioned technical scheme, the structure of seting up the holding tank on the stop collar is used for cooperating with the tip of connecting axle, has increased the structure of stopper and has connected the epaxial draw-in groove of mutually supporting for carry out the connection between stop collar and the connecting axle and fix.

Preferably, one end of the limiting block, which extends to the outside of the limiting groove, is hemispherical, the reset piece is a reset spring, one end of the reset spring is connected with the end part of the limiting block, and the other end of the reset spring is connected with the inner wall of the limiting groove, which is far away from the bottom of the connecting shaft; the limiting grooves are arranged at two positions in the limiting sleeve, and the two limiting grooves are symmetrically arranged by taking the axis of the connecting sleeve as the center.

Through adopting above-mentioned technical scheme, the structure that has used reset spring can be used for carrying out the reseing of stopper as the piece that resets, makes the bottom of stopper get into the draw-in groove through reset spring's effect when using, has realized that the connection between stop collar and the connecting axle is fixed, sets up to hemispherical structure, when needs are dismantled, outwards stimulates the stop collar and can make the tip of stopper remove to the spacing groove in, is convenient for take off the stop collar.

Preferably, the machine body is provided with two vertical plates, the wire feeding roller comprises an upper roller and a lower roller which are arranged between the two vertical plates, two ends of the lower roller are rotatably arranged on the vertical plates, and the machine body is provided with a driving motor for driving the lower roller to rotate; one side that the riser is close to each other is provided with the spout, and slidable mounting has the slider in the spout, goes up the roller both ends and rotates and install on the slider.

Through adopting above-mentioned technical scheme, increased the riser structure on the organism, gone up the installation of roller and lower roll, driven the structure of lower roll through driving motor for send a silk, increased the structure of spout and slider, make the structure of going up the roller can carry out vertical removal along with the slider, adjust the interval between roller and the lower roll.

Preferably, be provided with the connection piece on the slider, the connection piece extends to the spout outside, is provided with the lug on the riser, and the threaded rod is installed in the rotation on the lug, and the threaded rod runs through the connection piece and with connection piece screw-thread fit.

Through adopting above-mentioned technical scheme, increased the structure of the connection piece on the slider, used the screw rod to drive the connection piece, can drive connection piece and slider and carry out the ascending removal of vertical side, then highly adjusting to last roller, the interval between roller and the lower roll is gone up in the change.

Preferably, the vertical plate is provided with a worm, the top of the vertical plate is provided with a mounting piece, the worm penetrates through the mounting pieces at two positions and extends to the outside of the vertical plate, the worm is rotatably connected with the mounting piece, the top of the threaded rod is connected with a worm wheel, and the worm wheel is meshed with the worm.

Through adopting above-mentioned technical scheme, use the structure of worm and worm wheel, when carrying out the rotation of worm, can drive two worm wheels and rotate simultaneously for go up roller both ends synchro-control.

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

the wire feeding frame is additionally arranged, the mechanism is used for installing wire feeding discs, a plurality of connecting plates are arranged on the wire feeding frame, the wire feeding discs are installed on the connecting plates, the wire feeding discs are installed on the wire feeding frame, a proper wire feeding disc is selected for feeding wires, and after the welding wires on one wire feeding disc are used, the wire feeding frame is rotated to enable the adjacent wire feeding discs to be close to the wire feeding rollers for feeding the welding wires; the replacement of the wire feeding disc is convenient, and the wire feeding disc does not need to be frequently disassembled and re-assembled;

the structure of the positioning ring is used as a positioning piece, after the second clamping tooth on the positioning ring is matched with the first clamping tooth on the supporting plate, the positioning of the connecting disc and the wire feeding disc is facilitated, and after the first clamping tooth is separated from the second clamping tooth, the rotation of the connecting disc and the wire feeding disc is facilitated;

the structure of having used last roller and lower roll send a silk, through the structure of worm and worm wheel, drives the threaded rod and rotates, and drive slider removes with last roller, conveniently adjusts the interval between the roller lower roll, makes things convenient for the welding wire to pass through between last roller and the lower roll.

Drawings

FIG. 1 is a schematic structural diagram of a main body of an embodiment of the application;

FIG. 2 is a schematic view of a wire feeder mounting structure according to an exemplary embodiment of the present disclosure.

Fig. 3 is an enlarged schematic view of a portion a of fig. 1.

Description of reference numerals: 1. a body; 11. a welding gun; 2. a support plate; 21. a first latch; 3. a wire feeding frame; 31. a connecting disc; 32. a connecting plate; 33. a connecting shaft; 34. a rotating shaft; 4. a wire feeding disc; 5. a limiting sleeve; 51. accommodating grooves; 52. a limiting groove; 53. a limiting block; 54. a return spring; 6. a positioning member; 61. a positioning ring; 62. a fixing ring; 63. a movable rod; 64. a positioning spring; 65. a connecting rod; 66. a second latch; 7. a vertical plate; 71. upper roll; 72. a lower roll; 73. a chute; 74. a slider; 75. connecting sheets; 76. a threaded rod; 77. a worm gear; 78. a worm; 79. mounting a sheet; 8. the motor is driven.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

Referring to fig. 1, the embodiment of the application discloses a mounting device of a reinforced concrete protective door, which comprises a machine body 1, a welding gun 11 mounted on the machine body 1 and a wire feeding device, wherein the wire feeding device comprises a wire feeding frame 3, a wire feeding disc 4 and a wire feeding roller.

Referring to fig. 1 and 2, a vertical support plate 2 is mounted on a machine body 1, a wire feeding frame 3 includes a connection plate 31 and three connection plates 32, the three connection plates 32 are fixedly mounted on the edge of the connection plate 31, and the three connection plates 32 are distributed in a circular array with the axis of the connection plate 31 as the center. The connecting plate 32 is fixedly provided with a connecting shaft 33, and the axis of the connecting shaft 33 is horizontally arranged and is superposed with the axis of the connecting disc 31. The wire feeding disc 4 is sleeved on the connecting shaft 33 and rotates relative to the connecting shaft 33, and the limiting sleeve 5 is mounted at the end of the connecting shaft 33 and used for limiting the wire feeding disc 4 so that the wire feeding disc is not easy to separate from the connecting shaft 33. Send the silk frame 3 and install in backup pad 2, rotate on the backup pad 2 and install pivot 34, pivot 34 axis and the coincidence of the axis of connecting axle 33, the one end and the connection pad 31 fixed connection of pivot 34, the other end extends to the outside of backup pad 2, has realized the rotation installation of connection pad 31 through pivot 34. A positioning member 6 for fixing the rotation shaft 34 is mounted on the rotation shaft 34 for restricting the rotation of the connection disc 31.

Referring to fig. 1 and 2, the positioning element 6 includes a positioning ring 61 sleeved on the rotating shaft 34, the positioning ring 61 slides along the length direction of the axis of the rotating shaft 34, a fixing ring 62 is fixed outside the rotating shaft 34, the axes of the positioning ring 61, the rotating shaft 34 and the fixing ring 62 are overlapped, and the fixing ring 62 is located on one side of the positioning ring 61 away from the supporting plate 2. A movable rod 63 is slidably mounted on the fixed ring 62, one end of the movable rod 63 is connected to the fixed ring 61, the other end extends to the outside of the fixed ring 62, the length direction of the movable rod 63 is the same as the rotating shaft 34, and the movable rod 63 slides along the length direction thereof. The positioning ring 61 is moved horizontally by pulling the movable rod 63. The movable rods 63 are attached to the fixed ring 62 at two positions, and the two movable rods 63 are symmetrically arranged around the axis of the rotating shaft 34. A connecting rod 65 is connected between the ends of the movable rods 63 far away from the positioning ring 61, and the two movable rods 63 are conveniently pulled through the connecting rod 65. A positioning spring 64 is sleeved outside the movable rod 63, and two ends of the positioning spring 64 are respectively connected with the positioning ring 61 and the fixing ring 62 for resetting. Pulling the movable rod 63 away from the supporting plate 2 moves the positioning ring 61, and after releasing the movable rod 63, the positioning spring 64 will move the positioning ring 61 toward the supporting plate 2.

Referring to fig. 1 and 2, a first latch 21 is fixedly mounted on one side, close to the positioning ring 61, of the support plate 2, a plurality of positions are mounted on the first latch 21, the first latch 21 is arranged in a circular array with the axis of the rotating shaft 34 as the center, a second latch 66 matched with the first latch 21 is fixedly mounted on the positioning ring 61, and when the positioning ring 61 is close to the support plate 2, the first latch 21 and the second latch 66 are matched with each other to position the rotating shaft 34, so that the rotating shaft 34 is not prone to rotating, and the positions of the rotating shaft 34 and the connecting disc 31 are fixed.

Referring to fig. 1 and 2, a limiting sleeve 5 on a connecting shaft 33 is connected with the connecting shaft 33 through a limiting part, an accommodating groove 51 is formed in the limiting sleeve 5, the end part of the connecting shaft 33 abuts against the inner wall of the accommodating groove 51, two limiting grooves 52 are formed in the side wall of the accommodating groove 51, the limiting grooves 52 are arranged in a manner of being centrosymmetric with the axis of the limiting sleeve 5, the limiting part comprises a limiting block 53 movably mounted in the limiting groove 52, the limiting block 53 slides along the length direction of the limiting groove 52, the end part of the limiting block 53 extends to the outside of the opening of the limiting groove 52, one end of the limiting block 53 far away from the connecting shaft 33 is connected with a reset spring 54 as a reset part, one end of the reset spring 54 is connected with the end part of the limiting block 53, the other end and the limiting groove 52 are far away from the. Stopper 53 extends to the outside tip of spacing groove 52 and is the hemisphere, after stopper 53's tip and draw-in groove cooperation, outwards stimulate stop collar 5 hard, the inner wall that makes the draw-in groove is used in stopper 53's tip, make stopper 53 remove in to spacing groove 52, stopper 53 and draw-in groove are respectively, make stop collar 5 break away from connecting axle 33, the principle is the same when carrying out the installation of stop collar 5, connecting axle 33 extrudes stopper 53's tip, it corresponds to remove stop collar 5 until stopper 53's tip and draw-in groove position.

Referring to fig. 3, install two risers 7 on organism 1, send the silk roller including installing last roller 71 and lower roll 72 between riser 7, the both ends of lower roll 72 are passed through the axis of rotation and are installed on riser 7, and the one end of axis of rotation extends to the outside of riser 7 and is connected with driving motor 8, and driving motor 8 is installed on organism 1 and output shaft and rotation axis connection, and drive lower roll 72 rotates. Vertical sliding grooves 73 are formed in the vertical plates 7, the vertical plates 7 are communicated through the sliding grooves 73 along the direction in which the vertical plates 7 deviate from each other, sliding blocks 74 are installed in the sliding grooves 73 in a sliding mode, the sliding blocks 74 abut against the inner walls of the sliding grooves 73 and slide along the vertical direction, and the two ends of the upper roller 71 are installed on the sliding blocks 74 in a rotating mode. The connecting piece 75 is fixedly installed on the sliding block 74, the connecting piece 75 extends to the outside of the sliding groove 73, a convex block is formed at the top of the vertical plate 7, a vertical threaded rod 76 is installed on the convex block in a rotating mode, the threaded rod 76 penetrates through the connecting piece 75 and extends downwards, the threaded rod 76 is in threaded fit with the connecting piece 75, and the threaded rod 76 rotates by taking the axis of the threaded rod 76 as the center. The threaded rod 76 can drive the connecting piece 75 and the sliding block 74 to vertically move when rotating, the sliding block 74 can drive the upper roller 71 to vertically move when moving, the interval between the upper roller 71 and the lower roller 72 is changed, and welding wires can conveniently pass through the interval between the upper roller 71 and the lower roller 72.

Referring to fig. 3, in order to facilitate driving of the threaded rod 76, a mounting piece 79 is fixed on the top of the vertical plate 7, a horizontal worm 78 is mounted between the two mounting pieces 79, the holding rod is located above the vertical plate 7, two ends of the worm 78 extend to the outside of the mounting piece 79, the worm 78 is rotatably connected with the mounting piece 79, the rotation center line of the worm 78 is the axis of the worm 78, a worm wheel 77 is fixedly mounted on the top of the threaded rod 76, the axes of the worm wheel 77 and the worm 78 are perpendicular, the worm wheel 77 is meshed with the worm 78, and the worm 78 can drive the worm wheel 77 and the threaded rod 76 to rotate by rotating the worm 78, so that the connecting piece 75 and the sliding block.

The embodiment of the application provides a mounting equipment of reinforced concrete guard gate, its implementation principle does: the wire feeding frame 3 is additionally provided, the mechanism is used for installing wire feeding discs 4, a plurality of connecting plates 32 are arranged on the wire feeding frame 3, the wire feeding discs 4 are installed on connecting shafts 33 on the connecting plates 32, the wire feeding discs 4 are installed on the wire feeding frame 3, proper wire feeding discs 4 are selected for feeding wires, and after the welding wires on one wire feeding disc 4 are used, the adjacent wire feeding discs 4 are close to wire feeding rollers by rotating the wire feeding frame 3 and used for feeding the welding wires. The wire feeding disc 4 is convenient to replace, and the wire feeding disc 4 does not need to be frequently disassembled and re-assembled. Optionally, the wire feeding disc 4 is disassembled after all the welding wires on the wire feeding disc 4 are consumed. The structure using the limiting sleeve 5 can limit the limiting disc, and the structure using the positioning piece 6 can limit the rotating shaft 34 and limit the rotation of the wire feeding disc 4.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a reinforced concrete guard gate's erection equipment, includes organism (1), sets up welder (11) and the wire drive feed unit on organism (1), its characterized in that: the wire feeding device comprises a wire feeding frame (3), a wire feeding disc (4) arranged on the wire feeding frame (3) and a wire feeding roller arranged on the machine body (1), a supporting plate (2) is arranged on the machine body (1), the wire feeding frame (3) comprises a connecting disc (31) and a plurality of connecting plates (32) arranged on the edge of the connecting disc (31), and the connecting disc (31) is rotatably arranged on the supporting plate (2); a connecting shaft (33) is mounted on the connecting plate (32), the wire feeding disc (4) is sleeved on the connecting shaft (33), a limiting sleeve (5) is arranged at the end part of the connecting shaft (33), and a limiting part for fixing the position of the limiting sleeve (5) is arranged on the limiting sleeve (5); the connecting disc (31) is provided with a rotating shaft (34), the rotating shaft (34) is rotatably installed on the supporting plate (2), one end, far away from the connecting disc (31), of the rotating shaft (34) extends to the outside of the supporting plate (2), and a positioning piece (6) for fixing the rotating shaft (34) is arranged on the rotating shaft (34).

2. The installation apparatus of a reinforced concrete guard door according to claim 1, wherein: the positioning piece (6) comprises a positioning ring (61) sleeved on the rotating shaft (34), the positioning ring (61) slides along the length direction of the rotating shaft (34), a fixing ring (62) is fixedly arranged outside the rotating shaft (34), a movable rod (63) is slidably mounted on the fixing ring (62), one end of the movable rod (63) is connected with the positioning ring (61), the other end of the movable rod extends to the outside of the fixing ring (62), a positioning spring (64) is sleeved on the movable rod (63), and two ends of the positioning spring (64) are respectively connected with the positioning ring (61) and the fixing ring (62); the supporting plate (2) is provided with a first clamping tooth (21), the first clamping tooth (21) is arranged in a circular array by taking the axis of the rotating shaft (34) as the center, and the positioning ring (61) is provided with a second clamping tooth (66) matched with the first clamping tooth (21).

3. The installation apparatus of a reinforced concrete guard door according to claim 2, wherein: two positions of the movable rods (63) are arranged on the fixed ring (62), the two positions of the movable rods (63) are symmetrically arranged by taking the axis of the rotating shaft (34) as the center, and a connecting rod (65) is connected between the end parts of the two positions of the movable rods (63) far away from the positioning ring (61).

4. The installation apparatus of a reinforced concrete guard door according to claim 1, wherein: offer on stop collar (5) with connecting axle (33) tip complex holding tank (51), spacing groove (52) have been seted up to the lateral wall of holding tank (51), the locating part includes stopper (53) of movable mounting in spacing groove (52), stopper (53) tip extends to spacing groove (52) outside, be provided with on connecting axle (33) with stopper (53) tip complex draw-in groove, stopper (53) are connected with the piece that resets.

5. The installation apparatus of a reinforced concrete guard door according to claim 4, wherein: one end of the limiting block (53) extending to the outside of the limiting groove (52) is hemispherical, the reset piece is set to be a reset spring (54), one end of the reset spring (54) is connected with the end part of the limiting block (53), and the other end of the reset spring is connected with the inner wall of the bottom of the limiting groove (52) far away from the connecting shaft (33); the limiting grooves (52) are arranged at two positions in the limiting sleeve (5), and the two limiting grooves (52) are symmetrically arranged by taking the axis of the connecting sleeve as the center.

6. The installation apparatus of a reinforced concrete guard door according to claim 1, wherein: the machine body (1) is provided with two vertical plates (7), the wire feeding roller comprises an upper roller (71) and a lower roller (72) which are arranged between the two vertical plates (7), two ends of the lower roller (72) are rotatably arranged on the vertical plates (7), and the machine body (1) is provided with a driving motor (8) for driving the lower roller (72) to rotate; a sliding groove (73) is formed in one side, close to each other, of the vertical plate (7), a sliding block (74) is installed in the sliding groove (73) in a sliding mode, and two ends of the upper roller (71) are installed on the sliding block (74) in a rotating mode.

7. The installation apparatus of a reinforced concrete guard door according to claim 6, wherein: a connecting piece (75) is arranged on the sliding block (74), the connecting piece (75) extends to the outside of the sliding groove (73), a convex block is arranged on the vertical plate (7), a threaded rod (76) is rotatably arranged on the convex block, and the threaded rod (76) penetrates through the connecting piece (75) and is in threaded fit with the connecting piece (75).

8. The installation apparatus of a reinforced concrete guard door according to claim 7, wherein: the worm (78) is arranged above the vertical plate (7), the mounting piece (79) is arranged at the top of the vertical plate (7), the worm (78) penetrates through the mounting pieces (79) at two positions and extends to the outside of the vertical plate (7), the worm (78) is rotatably connected with the mounting piece (79), the top of the threaded rod (76) is connected with the worm wheel (77), and the worm wheel (77) is meshed with the worm (78).