CN214604252U

CN214604252U - Intelligent skate cabinet

Info

Publication number: CN214604252U
Application number: CN202023280491.XU
Authority: CN
Inventors: 王海军; 冯洪高
Original assignee: Nanjing Institute of Railway Technology
Current assignee: Nanjing Yisteli Technology Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-11-05
Anticipated expiration: 2030-12-30

Abstract

The utility model discloses an intelligent iron shoe storage cabinet, which comprises a bottom box body, an upper side box body, a display screen, an audible and visual alarm, a solar cell panel and a top bracket; the top support comprises a mounting back plate, a steering sleeve, a cross beam, a telescopic sleeve, an adjusting nut, a hand-screwed bolt and a telescopic screw rod; a main controller, a 4G module, a solar charging circuit, a voltage stabilizing circuit and a storage battery are arranged in the bottom box body; the traction roller mechanism comprises a traction roller, a roller supporting shaft, a traction swing arm and a rectangular pull ring. The intelligent iron shoe storage cabinet can monitor whether each iron shoe is placed in place or not in real time by using the proximity sensors, and when the situation that the iron shoes are not placed in place is monitored, the master controller controls the audible and visual alarm to keep an alarm state; utilize and pull gyro wheel mechanism can be convenient for pull removal skate and accomodate the cabinet, and through the cooperation of pulling swing arm and gyro wheel back shaft, can be convenient for adjust the direction of pulling the gyro wheel.

Description

Intelligent skate cabinet

Technical Field

The utility model relates to an iron shoe cabinet, especially an intelligent iron shoe cabinet.

Background

The iron shoe is one of tools which are installed on a special line or a departure line to prevent the vehicle from slipping in the railway shunting operation, and is also an obstacle which can enable a train to derail, so that special attention needs to be paid to the production, use and storage of the iron shoe, and a special device needs to be used for storage particularly in the use and storage links.

Since the construction vehicle is used in the transportation workshop, if the vehicle needs to be stopped for a long time during the line construction operation, the vehicle is generally required to be braked by the iron shoes so as to be in a stable stop state, and after the construction is finished, the vehicle needs to be brought back, the number of the vehicle needs to be counted, and the vehicle is placed in a specified place after the number of the vehicle is confirmed to be correct, so that the problems of using and storing the iron shoes also exist.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the intelligent iron shoe storage cabinet is improved, the iron shoes can be effectively managed, and safety accidents caused by omission of the iron shoes are avoided.

The technical scheme is as follows: the utility model relates to an intelligent iron shoe storage cabinet, which comprises a bottom box body, an upper side box body, a display screen, an audible and visual alarm, a solar cell panel and a top bracket; the top support comprises a mounting back plate, a steering sleeve, a cross beam, a telescopic sleeve, an adjusting nut, a hand-screwed bolt and a telescopic screw rod; a main controller, a 4G module, a solar charging circuit, a voltage stabilizing circuit and a storage battery are arranged in the bottom box body; the display screen and the audible and visual alarm are fixedly arranged at the top of the upper side box body;

the steering sleeve is fixedly arranged at the top of the upper box body, a top rotating shaft is vertically arranged in the middle of the lower side surface of the cross beam, and the lower end of the top rotating shaft is inserted into the steering sleeve; the hand-screwed bolt is screwed on the pipe wall of the steering sleeve, and the end part of the screw rod of the hand-screwed bolt is pressed on the top rotating shaft; one end of the cross beam is hinged and installed on the lower side surface of the installation back plate in a swinging mode through the upper side hinge seat; the lower end of the telescopic sleeve is hinged and arranged on the other end of the cross beam in a swinging mode; the upper end of the telescopic screw rod is hinged on the lower side surface of the mounting back plate in a swinging mode, and the lower end of the telescopic screw rod is inserted into the telescopic sleeve; the adjusting nut is screwed on the telescopic screw rod, and is supported on the upper end pipe orifice of the telescopic sleeve; a handle rod is arranged on the side edge of the adjusting nut; the solar cell panel is fixedly arranged on the upper side surface of the mounting backboard; two supporting rollers are arranged on the right side of the bottom box body, and a traction roller mechanism is arranged on the left side of the bottom box body; the upper box body is fixedly arranged on the upper side surface of the bottom box body, and a front door plate is hinged at a front side opening of the upper box body; each iron shoe storage bin is divided into iron shoe storage bins by each vertical partition plate in the upper side box body, and an L-shaped iron shoe placing seat is fixedly arranged in each iron shoe storage bin; a front blind hole is formed in the front side face of each vertical plate of each L-shaped skate containing seat, and a proximity sensor is mounted on each front blind hole;

The traction roller mechanism comprises a traction roller, a roller supporting shaft, a traction swing arm and a rectangular pull ring; a rectangular recess is formed in the middle of the left side face of the bottom box body; the traction roller is rotatably arranged on the lower end part of the roller supporting shaft through a roller support; the roller supporting shaft is vertically and rotatably arranged in the middle of the left side surface of the bottom box body, and the upper end of the roller supporting shaft vertically penetrates through the rectangular recess; one end of the traction swing arm extends into the rectangular recess and is vertically fixed on the roller supporting shaft; a swing arm mounting hole is formed in the other end of the traction swing arm, and a width side rod at one end of the rectangular pull ring penetrates through the swing arm mounting hole;

the main controller is electrically connected with the 4G module, the display screen, the audible and visual alarm and each proximity sensor respectively; the storage battery supplies power to the main controller, the 4G module, the display screen, the audible and visual alarm and each proximity sensor through the voltage stabilizing circuit respectively; the solar cell panel charges the storage battery through the solar charging circuit.

Further, an RFID card reader electrically connected with the main controller is arranged at the top of the upper side box body; an electric telescopic rod is hinged on the left inner wall and the right inner wall of the upper box body in a swinging mode; the main controller is electrically connected with the two electric telescopic rods; the end parts of the telescopic rods of the two electric telescopic rods are hinged on the inner side surface of the front door plate in a swinging mode.

Furthermore, a pull ring limiting seat is arranged on the outer wall of the left side of the upper side box body, and a U-shaped notch is formed in the pull ring limiting seat; a locking pin rod is vertically inserted on the pull ring limiting seat and penetrates through the groove edge of the U-shaped notch; a pin rod convex ring is arranged at the outer end part of the locking pin rod; the middle part of the side lever of the width of the other end of the rectangular pull ring is buckled in the U-shaped notch; the locking pin rod is sleeved with a pin rod tension spring, and two ends of the pin rod tension spring are respectively fixed on the pin rod convex ring and the pull ring limiting seat and used for pulling the locking pin rod to stretch into the notch of the U-shaped notch so as to lock the width side edge rod of the rectangular pull ring.

Furthermore, a vertical T-shaped groove is formed in the upper portion of the front side face of the vertical plate of the L-shaped skate placing seat, and a buckle sliding block is installed on the vertical T-shaped groove in a sliding mode; a buckle tension spring is arranged in the vertical T-shaped groove, and two ends of the buckle tension spring are respectively fixed on the end part of the vertical T-shaped groove and the buckle slide block and used for pulling the buckle slide block to slide downwards; a buckle convex block which protrudes out of the vertical T-shaped groove is fixedly arranged on the buckle sliding block; the lower side surface of the buckle lug is provided with an iron shoe buckle notch.

Furthermore, a rubber gasket which is used for pressing the upper edge of the iron shoe is arranged in the iron shoe buckle notch.

Furthermore, an iron shoe limiting groove is arranged on the upper side surface of the horizontal plate of the L-shaped iron shoe placing seat.

Compared with the prior art, the utility model, its beneficial effect is: the proximity sensors can be used for monitoring whether each iron shoe is placed in place in real time, and when the situation that the iron shoes are not placed in place is monitored, the sound-light alarm is controlled by the main controller to keep an alarm state; the display screen can be used for displaying which iron shoe in the iron shoe storage bin is not put in place; the solar charging is formed by the solar panel, the solar charging circuit and the storage battery, so that the long-term use of the system is met; the upper side hinged seat and the telescopic screw rod are used for carrying out two-point support on the lower side surface of the mounting back plate, so that the mounting back plate can be ensured to have better stability; the adjusting nut is matched with the telescopic screw rod, so that the extending length of the telescopic screw rod can be conveniently adjusted, and the pitching angle of the solar cell panel can be adjusted; the horizontal orientation angle of the solar cell panel can be conveniently adjusted by matching the hand-screwed bolt, the steering sleeve and the top rotating shaft; the 4G module can be used for uploading the in-place state of the iron shoes in the iron shoe storage cabinet to a terminal of a worker, so that the worker can be ensured to remotely monitor the in-place state of the iron shoes; the two supporting rollers and the traction roller mechanism are utilized, so that the skate containing cabinet can be conveniently moved; utilize and pull gyro wheel mechanism can be convenient for pull removal skate and accomodate the cabinet, and through the cooperation of pulling swing arm and gyro wheel back shaft, can be convenient for adjust the direction of pulling the gyro wheel.

Drawings

FIG. 1 is a schematic structural view of the front side door panel of the present invention after being opened;

FIG. 2 is a schematic structural view of the L-shaped skate placing seat of the present invention;

fig. 3 is a schematic diagram of the circuit structure of the present invention.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.

Example 1:

as shown in fig. 1-3, the utility model discloses an intelligent skate cabinet includes: the device comprises a bottom box body 1, an upper side box body 4, a display screen 7, an audible and visual alarm 8, a solar cell panel 20 and a top support; the top support comprises a mounting back plate 37, a steering sleeve 3, a cross beam 21, a telescopic sleeve 43, an adjusting nut 48, a hand-screwed bolt 5 and a telescopic screw 44; a main controller, a 4G module, a solar charging circuit, a voltage stabilizing circuit and a storage battery are arranged in the bottom box body 1; the display screen 7 and the audible and visual alarm 8 are both fixedly arranged at the top of the upper box body 4;

the steering sleeve 3 is fixedly arranged at the top of the upper box body 4, a top rotating shaft 38 is vertically arranged in the middle of the lower side surface of the cross beam 21, and the lower end of the top rotating shaft 38 is inserted into the steering sleeve 3; the hand-screwed bolt 5 is screwed on the pipe wall of the steering sleeve 3, and the end part of the screw rod of the hand-screwed bolt 5 is pressed on the top rotating shaft 38; one end of the cross beam 21 is hinged and installed on the lower side surface of the installation back plate 37 in a swinging mode through an upper side hinge seat 39; the lower end of the telescopic pipe 43 is hinged and arranged on the other end of the beam 21 in a swinging mode; the upper end of the telescopic screw rod 44 is hinged on the lower side surface of the mounting back plate 37 in a swinging mode, and the lower end of the telescopic screw rod 44 is inserted into the telescopic sleeve 43; the adjusting nut 48 is screwed on the telescopic screw rod 44, and the adjusting nut 48 is supported on the upper end pipe orifice of the telescopic pipe 43; a handle rod 49 is provided on the side of the adjusting nut 48; the solar cell panel 20 is fixedly installed on the upper side surface of the installation back plate 37; two supporting rollers 45 are arranged on the right side of the bottom box body 1, and a traction roller mechanism is arranged on the left side of the bottom box body 1; the upper box body 4 is fixedly arranged on the upper side surface of the bottom box body 1, and a front side door plate 19 is hinged at a front side opening of the upper box body 4; each iron shoe storage bin is divided into upper side box bodies 4 through each vertical partition plate 9, and each iron shoe storage bin is fixedly provided with an L-shaped iron shoe placing seat 11; a front blind hole 22 is formed in the front side of the vertical plate of each L-shaped skate placing seat 11, and a proximity sensor 26 is mounted on the front blind hole 22;

The traction roller mechanism comprises a traction roller 2, a roller supporting shaft 40, a traction swing arm 42 and a rectangular pull ring 12; a rectangular recess 41 is arranged in the middle of the left side surface of the bottom box body 1; the traction roller 2 is rotatably mounted on the lower end part of the roller supporting shaft 40 through a roller support; the roller supporting shaft 40 is vertically and rotatably arranged in the middle of the left side surface of the bottom box body 1, and the upper end of the roller supporting shaft 40 vertically penetrates through the rectangular recess 41; one end of the traction swing arm 42 extends into the rectangular recess 41 and is vertically fixed on the roller supporting shaft 40; a swing arm mounting hole is formed in the other end of the traction swing arm 42, and a width side rod at one end of the rectangular pull ring 12 penetrates through the swing arm mounting hole;

the main controller is respectively and electrically connected with the 4G module, the display screen 7, the audible and visual alarm 8 and each proximity sensor 26; the storage battery supplies power to the main controller, the 4G module, the display screen 7, the audible and visual alarm 8 and each proximity sensor 26 through voltage stabilizing circuits respectively; the solar cell panel 20 charges the storage battery through the solar charging circuit.

Whether each iron shoe is put in place or not can be monitored in real time by using the proximity sensor 26, and when the situation that the iron shoes are not put in place is monitored, the audible and visual alarm 8 is controlled by the main controller to keep an alarm state; the display screen 7 can be used for displaying which iron shoe in the iron shoe storage bin is not put in place; the solar battery panel 20, the solar charging circuit and the storage battery are used for forming solar charging, so that long-term use of the system is met; the upper hinged seat 39 and the telescopic screw 44 are used for carrying out two-point support on the lower side surface of the mounting backboard 37, so that the mounting backboard 37 can be ensured to have better stability; the adjusting nut 48 is matched with the telescopic screw 44, so that the extending length of the telescopic screw 44 can be conveniently adjusted, and the pitch angle of the solar cell panel 20 can be adjusted; the horizontal orientation angle of the solar cell panel 20 can be conveniently adjusted by matching the hand-screwed bolt 5, the steering sleeve 3 and the top rotating shaft 38; the 4G module can be used for uploading the in-place state of the iron shoes in the iron shoe storage cabinet to a terminal of a worker, so that the worker can be ensured to remotely monitor the in-place state of the iron shoes; the two supporting rollers 45 and the traction roller mechanism are utilized, so that the skate containing cabinet can be conveniently moved; utilize and pull gyro wheel mechanism can be convenient for pull removal skate and accomodate the cabinet, and through the cooperation of pulling swing arm 42 and gyro wheel back shaft 40, can be convenient for adjust the direction of pulling gyro wheel 2.

Further, an RFID card reader 6 electrically connected with the main controller is arranged at the top of the upper box body 4; an electric telescopic rod 33 is hinged on the left and right inner walls of the upper box body 4 in a swinging way; the main controller is electrically connected with the two electric telescopic rods 33; the end parts of the two electric telescopic rods 33 are hinged on the inner side surface of the front door panel 19 in a swinging mode. The RFID card reader 6 can be used for conveniently reading the work card of a user, and the main controller drives the two electric telescopic rods 33 to work after the work card passes the identification, so that the opening and closing of the front door panel 19 are controlled.

Furthermore, a pull ring limiting seat 17 is arranged on the outer wall of the left side of the upper box body 4, and a U-shaped notch 18 is arranged on the pull ring limiting seat 17; a locking pin rod 15 is vertically inserted on the pull ring limiting seat 17, and the locking pin rod 15 penetrates through the groove edge of the U-shaped groove 18; a pin rod convex ring 14 is arranged at the outer end part of the locking pin rod 15; the middle part of the side bar of the width of the other end of the rectangular pull ring 12 is buckled in the U-shaped notch 18; a pin rod tension spring 16 is sleeved on the locking pin rod 15, and two ends of the pin rod tension spring 16 are respectively fixed on the pin rod convex ring 14 and the pull ring limiting seat 17 and used for pulling the locking pin rod 15 to extend into a notch of the U-shaped notch 18 to lock the width side rod of the rectangular pull ring 12. The locking pin 15 can be pulled by means of the pin lever tension spring 16 into the slot of the U-shaped slot 18, thereby locking the width-sided lever of the rectangular tab 12.

Further, a vertical T-shaped groove 59 is arranged at the upper part of the front side surface of the vertical plate of the L-shaped skate placing seat 11, and a buckle sliding block 60 is arranged on the vertical T-shaped groove 59 in a sliding manner; a buckle tension spring 64 is arranged in the vertical T-shaped groove 59, and two ends of the buckle tension spring 64 are respectively fixed on the end part of the vertical T-shaped groove 59 and the buckle sliding block 60 and used for pulling the buckle sliding block 60 to slide downwards; a buckle lug 61 protruding out of the vertical T-shaped groove 59 is fixedly arranged on the buckle sliding block 60; a skate snap notch 62 is provided on the lower side of the snap lug 61. Utilize buckle extension spring 64 can pull buckle lug 61 after the skate is taken one's place for skate buckle notch 62 buckle is on the upper end edge of skate, thereby realizes the upper end locking of skate, avoids removing or rocks the collision in the transportation.

Further, a rubber gasket 63 for pressing on the upper edge of the iron shoe is provided in the iron shoe catch notch 62. The elastic pressing is achieved by the rubber gasket 63.

Further, an iron shoe limiting groove 23 is formed in the upper side face of the horizontal plate of the L-shaped iron shoe placing seat 11. The lower end positioning of the iron shoe can be conveniently realized by utilizing the iron shoe limiting groove 23.

In the intelligent skate storage cabinet disclosed by the utility model, the main controller adopts the existing controller module, such as STM32 series single chip microcomputer module; the proximity sensor 26 is an existing ultrasonic proximity sensor; the 4G module adopts the existing 4G communication module; the display screen 7 adopts the existing display screen; the RFID card reader 6 adopts the existing RFID card reader module; the electric telescopic rod 33 adopts the existing electric telescopic rod with a driving circuit; the audible and visual alarm 8 adopts the existing audible and visual alarm.

When the intelligent iron shoe storage cabinet disclosed by the utility model is used, a user pulls the locking pin rod 15 to unlock the rectangular pull ring 12 and pulls the iron shoe storage cabinet to a use position; then, a worker punches a card on the RFID card reader 6, after the card is successfully punched, the main controller opens the front side door plate 19 through the electric telescopic rod 33, and the iron shoe is lifted upwards, so that the iron shoe is taken out and placed on the track at the corresponding position; after each skate is used, the worker correspondingly places each skate on each L-shaped skate placing seat 11 and then brushes the card to close and lock the front door plate 19; the proximity sensor 26 monitors whether each iron shoe is put in place in real time, when the iron shoes are not put in place, the main controller controls the audible and visual alarm 8 to keep an alarm state, and if the iron shoes are not put in place after the front side door plate 19 is locked by swiping a card, the 4G module reports the alarm state to a terminal of a worker.

As mentioned above, although the present invention has been shown and described with reference to certain preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides an intelligent skate cabinet which characterized in that: comprises a bottom box body (1), an upper side box body (4), a display screen (7), an audible and visual alarm (8), a solar cell panel (20) and a top support; the top support comprises a mounting back plate (37), a steering sleeve (3), a cross beam (21), a telescopic sleeve (43), an adjusting nut (48), a hand-screwed bolt (5) and a telescopic screw (44); a main controller, a 4G module, a solar charging circuit, a voltage stabilizing circuit and a storage battery are arranged in the bottom box body (1); the display screen (7) and the audible and visual alarm (8) are fixedly arranged at the top of the upper box body (4);

the steering sleeve (3) is fixedly arranged at the top of the upper box body (4), a top rotating shaft (38) is vertically arranged in the middle of the lower side surface of the cross beam (21), and the lower end of the top rotating shaft (38) is inserted into the steering sleeve (3); the hand-screwed bolt (5) is screwed on the pipe wall of the steering sleeve (3) in a threaded manner, and the end part of the screw rod of the hand-screwed bolt (5) is pressed on the top rotating shaft (38); one end of the cross beam (21) is hinged and installed on the lower side surface of the installation backboard (37) in a swinging mode through an upper side hinge seat (39); the lower end of the telescopic sleeve (43) is hinged and arranged on the other end of the beam (21) in a swinging way; the upper end of the telescopic screw rod (44) is hinged on the lower side surface of the mounting back plate (37) in a swinging mode, and the lower end of the telescopic screw rod (44) is inserted into the telescopic sleeve (43); the adjusting nut (48) is screwed on the telescopic screw rod (44) in a threaded manner, and the adjusting nut (48) is supported on the upper end pipe orifice of the telescopic sleeve (43); a handle rod (49) is arranged on the side edge of the adjusting nut (48); the solar panel (20) is fixedly arranged on the upper side surface of the mounting backboard (37); two supporting rollers (45) are arranged on the right side of the bottom box body (1), and a traction roller mechanism is arranged on the left side of the bottom box body (1); the upper box body (4) is fixedly arranged on the upper side surface of the bottom box body (1), and a front door panel (19) is hinged at a front side opening of the upper box body (4); each iron shoe storage bin is divided into upper side box bodies (4) by each vertical partition plate (9), and each iron shoe storage bin is fixedly provided with an L-shaped iron shoe placing seat (11); a front blind hole (22) is formed in the front side face of the vertical plate of each L-shaped skate placing seat (11), and a proximity sensor (26) is mounted on the front blind hole (22);

The traction roller mechanism comprises a traction roller (2), a roller supporting shaft (40), a traction swing arm (42) and a rectangular pull ring (12); a rectangular recess (41) is arranged in the middle of the left side surface of the bottom box body (1); the traction roller (2) is rotatably arranged on the lower end part of the roller supporting shaft (40) through a roller support; the roller supporting shaft (40) is vertically and rotatably arranged in the middle of the left side surface of the bottom box body (1), and the upper end of the roller supporting shaft (40) vertically penetrates through the rectangular recess (41); one end of the traction swing arm (42) extends into the rectangular recess (41) and is vertically fixed on the roller supporting shaft (40); a swing arm mounting hole is formed in the other end of the traction swing arm (42), and a width side rod at one end of the rectangular pull ring (12) penetrates through the swing arm mounting hole;

the main controller is respectively and electrically connected with the 4G module, the display screen (7), the audible and visual alarm (8) and each proximity sensor (26); the storage battery supplies power to the main controller, the 4G module, the display screen (7), the audible and visual alarm (8) and each proximity sensor (26) through the voltage stabilizing circuit respectively; the solar cell panel (20) charges the storage battery through the solar charging circuit.

2. The intelligent skate storage cabinet of claim 1, characterized in that: an RFID card reader (6) electrically connected with the main controller is arranged at the top of the upper side box body (4); an electric telescopic rod (33) is hinged on the left inner wall and the right inner wall of the upper box body (4) in a swinging way; the main controller is electrically connected with the two electric telescopic rods (33); the end parts of the telescopic rods of the two electric telescopic rods (33) are hinged on the inner side surface of the front door panel (19) in a swinging mode.

3. The intelligent skate storage cabinet of claim 1, characterized in that: a pull ring limiting seat (17) is arranged on the outer wall of the left side of the upper box body (4), and a U-shaped notch (18) is arranged on the pull ring limiting seat (17); a locking pin rod (15) is vertically inserted on the pull ring limiting seat (17), and the locking pin rod (15) penetrates through the groove edge of the U-shaped notch (18); a pin rod convex ring (14) is arranged at the outer end part of the locking pin rod (15); the middle part of the side lever of the width of the other end of the rectangular pull ring (12) is buckled in the U-shaped notch (18); the locking pin rod (15) is sleeved with a pin rod tension spring (16), two ends of the pin rod tension spring (16) are respectively fixed on the pin rod convex ring (14) and the pull ring limiting seat (17) and used for pulling the locking pin rod (15) to stretch into a notch of the U-shaped notch (18) so as to lock the width side rod of the rectangular pull ring (12).

4. The intelligent skate storage cabinet of claim 1, characterized in that: a vertical T-shaped groove (59) is arranged at the upper part of the front side surface of the vertical plate of the L-shaped skate placing seat (11), and a buckle sliding block (60) is arranged on the vertical T-shaped groove (59) in a sliding way; a buckle tension spring (64) is arranged in the vertical T-shaped groove (59), and two ends of the buckle tension spring (64) are respectively fixed on the end part of the vertical T-shaped groove (59) and the buckle sliding block (60) and used for pulling the buckle sliding block (60) to slide downwards; a buckle convex block (61) which protrudes out of the vertical T-shaped groove (59) is fixedly arranged on the buckle sliding block (60); the lower side surface of the buckling lug (61) is provided with an iron shoe buckling notch (62).

5. The intelligent skate storage cabinet of claim 4, characterized in that: a rubber gasket (63) which is used for pressing the upper edge of the iron shoe is arranged in the iron shoe buckle notch (62).

6. The intelligent skate storage cabinet of claim 1, characterized in that: an iron shoe limiting groove (23) is arranged on the upper side surface of the horizontal plate of the L-shaped iron shoe placing seat (11).