CN213732436U

CN213732436U - Curing kiln

Info

Publication number: CN213732436U
Application number: CN202022067038.4U
Authority: CN
Inventors: 李海彬
Original assignee: Beijing Construction Engineering New Building Materials Technology Co ltd
Current assignee: Beijing Construction Engineering New Building Materials Technology Co ltd
Priority date: 2020-09-19
Filing date: 2020-09-19
Publication date: 2021-07-20
Anticipated expiration: 2030-09-19

Abstract

The application relates to the field of concrete curing equipment, in particular to a curing kiln, which comprises a base and a kiln body arranged on the base, wherein a track for transporting prefabricated parts is arranged at the bottom of the kiln body, the track is sunken downwards and extends out of the kiln body, a kiln door is arranged outside the kiln body, a sealing strip for tightly supporting a bottom plate is arranged at the bottom of the kiln door, a sealing block is connected onto the sealing strip, and the sealing block stretches into and tightly supports in the track; be provided with the coupling assembling that is used for the location sealing strip on the kiln door, coupling assembling includes locating lever and locating piece, the locating lever is connected with the sealing strip, locating lever one end is connected with the connecting block, the one end that the connecting block was kept away from to the locating lever is worn out the kiln door and is connected with the locating piece. The present application has the effect of sealing the undercut track.

Description

Curing kiln

Technical Field

The application relates to the field of concrete curing equipment, in particular to a curing kiln.

Background

A curing kiln is a device for curing concrete. Concrete curing is the artificial creation of certain humidity and temperature conditions that allow the concrete to be normal or accelerate its hardening and strength growth.

The utility model discloses a chinese utility model patent that grant publication number is CN203557504U discloses a brick curing kiln, including the kiln body, the interior wall of the kiln body is equipped with the heat preservation, the kiln is internal to be separated through the baffle and form the communicating curing chamber in a plurality of upper portions, each the preceding wall of curing chamber or the lower part of back wall are equipped with steam inlet, upper portion and are equipped with steam outlet, each the horizontal shelf is equipped with the multilayer layer board in the curing chamber, at each the bottom both sides are provided with the fin respectively in the curing chamber.

With respect to the related art in the above, the inventors consider that: in order to facilitate and simplify the concrete transportation, a track convenient for transportation is usually arranged at the bottom of the curing room, the track is sunken downwards, and the track extends outwards out of the curing room; and the maintenance room is provided with the kiln door outward, and orbital setting appears the kiln door easily and does not lead to the external environment to cause the influence to the maintenance kiln internal environment, and then causes certain influence to the maintenance of concrete.

SUMMERY OF THE UTILITY MODEL

In order to seal the downwardly concave track, the present application provides a curing kiln.

The application provides a curing kiln adopts following technical scheme:

a curing kiln comprises a base and a kiln body arranged on the base, wherein a track for transporting prefabricated parts is arranged at the bottom of the kiln body, the track is sunken downwards and extends out of the kiln body, a kiln door is arranged outside the kiln body, a sealing strip for tightly abutting against a bottom plate is arranged at the bottom of the kiln door, and a sealing block is connected onto the sealing strip and extends into and tightly abuts against the track; be provided with the coupling assembling that is used for the location sealing strip on the kiln door, coupling assembling includes locating lever and locating piece, the locating lever is connected with the sealing strip, locating lever one end is connected with the connecting block, the one end that the connecting block was kept away from to the locating lever is worn out the kiln door and is connected with the locating piece.

Through adopting above-mentioned technical scheme, when the kiln door was closed, sealed piece stretched into and supported tightly in the track, and the sealing strip supports tightly with the bottom plate, and the track that sets up through sealed piece with undercut is sealed, reduces the influence that external environment and curing kiln internal environment caused, reduces the influence that the maintenance to the concrete led to the fact. When the sealing strip is positioned, the positioning rod and the sealing strip penetrate through the kiln door and are connected with the positioning block, so that the sealing strip is convenient and simple to install.

Optionally, one end of the positioning rod, which is far away from the connecting block, is connected with a screw rod, and a threaded hole in threaded fit with the screw rod is formed in the positioning block.

Through adopting above-mentioned technical scheme, during the location sealing strip, pass the kiln door with locating lever and sealing strip to with locating piece and screw rod threaded connection can, strengthen the joint strength between locating lever and the locating piece to a certain extent, strengthen the joint strength of locating lever and kiln door.

Optionally, the side wall of the kiln door is provided with an insertion groove which is in insertion fit with the positioning block and the connecting block; the outer side walls of the positioning blocks and the connecting blocks are flush with the side wall of the kiln door.

Through adopting above-mentioned technical scheme, locating piece and connecting block and inserting groove grafting cooperation to make locating piece and connecting block lateral wall and kiln door lateral wall parallel and level, make things convenient for kiln door and kiln body coupling.

Optionally, a connecting groove in splicing fit with the sealing strip is formed in the bottom of the kiln door, a protrusion is connected to the side wall of the connecting groove, and a groove in splicing fit with the protrusion is formed in the side wall of the sealing strip.

Through adopting above-mentioned technical scheme, the sealing strip is pegged graft with the spread groove cooperation of going up of kiln door bottom to the arch on the spread groove is pegged graft with the recess cooperation on the sealing strip lateral wall, further strengthens the joint strength of sealing strip and kiln door, reduces the possibility that the sealing strip drops from the kiln door to a certain extent.

Optionally, an installation box is arranged on the kiln body, a driving assembly for opening the kiln door is arranged on the installation box, the driving assembly comprises a first gear, a second gear and a driving motor capable of rotating in forward and reverse directions, a rotating shaft is rotatably connected in the installation box and connected with the kiln door, the first gear is coaxially connected to the rotating shaft, the second gear is coaxially connected to an output shaft of the driving motor, and the first gear is meshed with the second gear; the kiln body is provided with a sliding groove, and the kiln door is connected with a sliding block which is matched with the sliding groove in a sliding manner.

By adopting the technical scheme, when the kiln door needs to be opened, the driving motor is opened to drive the second gear to rotate, the second gear rotates to drive the first gear to rotate, the first gear rotates to drive the rotating shaft to rotate, and the rotating shaft rotates to move the kiln door upwards along the sliding groove and is wound on the rotating shaft; when the kiln door needs to be closed, the driving motor is opened, an output shaft of the driving motor rotates reversely to drive the second gear to rotate reversely, the second gear rotates to drive the first gear to rotate, the first gear rotates to drive the rotating shaft to rotate, and the rotating shaft rotates to move the kiln door downwards along the sliding groove; the operation is convenient and simple.

Optionally, the upper end of the kiln door is connected with a first connecting block, and a positioning assembly for positioning the first connecting block is arranged on the rotating shaft; the positioning assembly comprises a first positioning block, a second positioning block and a positioning bolt, the first positioning block and the second positioning block are connected to the rotating shaft, the first connecting block penetrates through the rotating shaft and then is located between the first positioning block and the second positioning block, and the positioning bolt penetrates through the first positioning block and the first connecting block and then is in threaded connection with the second positioning block.

Through adopting above-mentioned technical scheme, when location kiln door to the axis of rotation, pass the axis of rotation with first connecting block to make first connecting block be located between first locating piece and the second locating piece, pass first locating piece, first connecting block back with positioning bolt again, make positioning bolt and second locating piece threaded connection, make the kiln door connect in the axis of rotation betterly, reduce the possibility that the kiln door drops from the axis of rotation.

Optionally, the upper end of the kiln door is connected with a second connecting block, a pre-limiting assembly for pre-positioning the second connecting block is arranged on the rotating shaft, the pre-limiting assembly comprises a first limiting block, a second limiting block and a limiting bolt, the first limiting block and the second limiting block are connected to the rotating shaft, the second connecting block passes through the rotating shaft and then is located between the first limiting block and the second limiting block, and the limiting bolt passes through the first limiting block and then is in plug-in fit with the second connecting block; and the first limiting block is provided with a supporting component used for supporting the limiting bolt on the second connecting block.

Through adopting above-mentioned technical scheme, when fixing a position the kiln door to the axis of rotation, connect the kiln door in the axis of rotation through spacing subassembly in advance earlier, rethread positioning bolt fixes a position the kiln door in the axis of rotation, makes convenient operation simple. When connecting the kiln door in the axis of rotation through spacing subassembly in advance, pass the axis of rotation back with the second connecting block, make the second connecting block be located between first stopper and the second stopper to pass spacing bolt behind the first stopper with the cooperation of pegging graft of second connecting block, and support spacing bolt tightly on the second connecting block through supporting tight subassembly.

Optionally, the abutting assembly comprises an abutting piece and a compression spring, the first limiting block is connected with an installation block, an installation groove is formed in the installation block, the abutting piece is connected in the installation groove in a sliding manner, and the abutting piece is connected to the limiting plug pin; one end of the compression spring is connected with one end, away from the first limiting block, of the abutting piece, and the other end of the compression spring is connected with one end, away from the first limiting block, of the mounting groove.

Through adopting above-mentioned technical scheme, when connecting the kiln door in the axis of rotation through spacing subassembly in advance, operating personnel stimulates spacing bolt, makes compression spring further compress, passes the axis of rotation with the second connecting block after, and operating personnel loosens spacing bolt, makes spacing bolt pass first stopper under compression spring's elastic force and supports tightly on the second connecting block, strengthens the joint strength between second connecting block and the axis of rotation to a certain extent.

Optionally, the installation box is connected with an indicator light, the bottom plate is connected with a pressure sensor and a controller, the pressure sensor transmits an electric signal to the controller when receiving the pressure of the kiln door, and the controller controls the indicator light to turn green; when the pressure sensor is not under the pressure of the kiln door, an electric signal is transmitted to a controller, and the controller controls the indicator light to turn red.

By adopting the technical scheme, when the kiln door is closed and the pressure sensor is under the pressure of the kiln door, the pressure sensor transmits an electric signal to the controller, and the controller controls the indicator light to turn green to indicate that the curing kiln is curing at the moment; when the kiln door is opened, the pressure sensor is not subjected to the pressure of the kiln door, the pressure sensor transmits an electric signal to the controller, and the controller controls the indicator light to turn red to indicate that the curing of the curing kiln is finished or the curing is not started. The setting of pilot lamp makes operating personnel judge the state of curing kiln more conveniently.

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

1. when the kiln door is closed, the sealing block extends into and abuts against the inside of the track, the sealing strip abuts against the bottom plate, and the downward sunken track is sealed through the arrangement of the sealing block, so that the influence caused by the external environment and the internal environment of the curing kiln is reduced, and the influence on the curing of concrete is reduced;

2. when the kiln door needs to be opened, the driving motor is opened to drive the second gear to rotate, the second gear rotates to drive the first gear to rotate, the first gear rotates to drive the rotating shaft to rotate, and the rotating shaft rotates to move the kiln door upwards along the sliding groove and is wound on the rotating shaft; when the kiln door needs to be closed, the driving motor is opened, an output shaft of the driving motor rotates reversely to drive the second gear to rotate reversely, the second gear rotates to drive the first gear to rotate, the first gear rotates to drive the rotating shaft to rotate, and the rotating shaft rotates to move the kiln door downwards along the sliding groove; the operation is convenient and simple;

3. the setting of pilot lamp makes operating personnel judge the state of curing kiln more conveniently.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 3 is an enlarged view of portion C of FIG. 2;

FIG. 4 is a schematic view of the drive assembly of FIG. 1 with the mounting case removed;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a schematic view of the structure of the lower end of the kiln door, showing the structural schematic view of the sealing strip and the sealing block;

fig. 7 is a schematic view of the structure of the lower end of the kiln door, showing the structure of the connecting assembly.

Description of reference numerals: 1. a base; 11. a kiln body; 12. a track; 13. a chute; 2. a kiln door; 21. a slider; 22. a first connection block; 23. a second connecting block; 24. a sealing strip; 241. a groove; 25. a sealing block; 26. connecting grooves; 261. a protrusion; 3. installing a box; 31. a rotating shaft; 32. an indicator light; 4. a drive assembly; 41. a first gear; 42. a second gear; 43. a drive motor; 5. a positioning assembly; 51. a first positioning block; 52. a second positioning block; 53. positioning the bolt; 6. a pre-limiting assembly; 61. a first stopper; 62. a second limiting block; 63. a limiting bolt; 7. a propping component; 71. a propping sheet; 72. a compression spring; 73. mounting blocks; 731. mounting grooves; 8. a connecting assembly; 81. positioning a rod; 811. connecting blocks; 812. a screw; 82. positioning blocks; 821. a threaded hole; 83. and (4) inserting grooves.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a curing kiln. Referring to fig. 1, the curing kiln comprises a base 1 and a kiln body 11 fixedly connected to the base 1, wherein the kiln body 11 is rectangular.

Referring to fig. 2 and 3, a track 12 for transporting the prefabricated member is opened at the bottom of the kiln body 11, the track 12 is recessed downward, and the track 12 extends out of the kiln body 11.

A kiln door 2 is arranged outside the kiln body 11. The kiln body 11 is provided with a sliding groove 13 arranged along the vertical direction, and the kiln door 2 is integrally provided with a sliding block 21 matched with the sliding groove 13 in a sliding manner.

Referring to fig. 1 and 4, the upper end of the kiln body 11 is provided with an installation box 3, the installation box 3 is provided with a driving assembly 4 for opening the kiln door 2, the driving assembly 4 comprises a first gear 41, a second gear 42 and a driving motor 43, and the driving motor 43 can rotate forwards and reversely.

The driving motor 43 is installed on the installation box 3, an output shaft of the driving motor 43 extends into the installation box 3, and the second gear 42 is coaxially and fixedly connected to the output shaft of the driving motor 43. The rotating shaft 31 is rotatably connected in the mounting box 3, and the first gear 41 is coaxially and fixedly connected to the rotating shaft 31. The first gear 41 meshes with the second gear 42.

Referring to fig. 4 and 5, the kiln door 2 is connected to a rotary shaft 31. The upper end of the kiln door 2 is fixedly connected with a first connecting block 22, and a positioning component 5 for positioning the first connecting block 22 is arranged on the rotating shaft 31.

The positioning assembly 5 includes a first positioning block 51, a second positioning block 52 and a positioning bolt 53, the first positioning block 51 and the second positioning block 52 are fixedly connected to the rotating shaft 31, and a space is left between the first positioning block 51 and the second positioning block 52. The first connecting block 22 passes through the rotating shaft 31 and then is located between the first positioning block 51 and the second positioning block 52, and the positioning bolt 53 passes through the first positioning block 51 and the first connecting block 22 and then is in threaded connection with the second positioning block 52.

The upper end of the kiln door 2 is fixedly connected with a second connecting block 23, and a pre-limiting component 6 for pre-positioning the second connecting block 23 is arranged on the rotating shaft 31.

The pre-limiting assembly 6 comprises a first limiting block 61, a second limiting block 62 and a limiting bolt 63, the first limiting block 61 and the second limiting block 62 are fixedly connected to the rotating shaft 31, and the second connecting block 23 penetrates through the rotating shaft 31 and then is located between the first limiting block 61 and the second limiting block 62. The limiting bolt 63 penetrates through the first limiting block 61 and then is matched with the second connecting block 23 in an inserting mode.

The first limiting block 61 is provided with a supporting component 7 for supporting the limiting bolt 63 on the second connecting block 23, and the supporting component 7 comprises a supporting sheet 71 and a compression spring 72.

Fixedly connected with installation piece 73 on the first stopper 61, set up the mounting groove 731 that sets up horizontally on the installation piece 73, support the tight piece 71 and slide along the horizontal direction and connect in mounting groove 731. The shape of the abutting sheet 71 is cylindrical, and the abutting sheet 71 is coaxially and fixedly connected to the limiting bolt 63. One end of the compression spring 72 is fixedly connected with one end of the abutting piece 71 far away from the first limit block 61, and the other end is fixedly connected with one end of the mounting groove 731 far away from the first limit block 61.

Fixedly connected with pilot lamp 32 on install bin 3, fixedly connected with pressure sensor and controller on the bottom plate, and pressure sensor is located under kiln door 2.

When the kiln door 2 is closed and the pressure sensor is under the pressure of the kiln door 2, the pressure sensor transmits an electric signal to the controller, and the controller controls the indicator lamp 32 to turn green to indicate that the curing kiln is curing at the moment; when the kiln door 2 is opened, the pressure sensor is not subjected to the pressure of the kiln door 2, the pressure sensor transmits an electric signal to the controller, and the controller controls the indicator lamp 32 to turn red to indicate that the curing kiln is cured or the curing is not started.

Referring to fig. 6 and 7, a sealing strip 24 is attached to the bottom of the kiln door 2. The lower end of the sealing strip 24 is fixedly connected with a sealing block 25, and the sealing block 25 extends into and is tightly propped against the track 12

The bottom of the kiln door 2 is provided with a horizontally arranged connecting groove 26, and the sealing strip 24 is in inserted connection and matching with the connecting groove 26. Fixedly connected with arch 261 on the connecting groove 26 lateral wall, protruding 261 horizontal setting has seted up on the sealing strip 24 lateral wall with protruding 261 grafting complex recess 241.

Be provided with the coupling assembling 8 that is used for location sealing strip 24 on the kiln door 2, coupling assembling 8 includes locating lever 81 and locating piece 82, locating lever 81 downside and sealing strip 24 upper end fixed connection. One end of the positioning rod 81 is fixedly connected with a connecting block 811, and one end of the positioning block 82 far away from the connecting block 811 penetrates out of the kiln door 2.

One end of the positioning rod 81 far from the connecting block 811 is fixedly connected with a screw 812, a threaded hole 821 is formed in the positioning block 82, and the threaded hole 821 in the positioning block 82 is in threaded connection with the screw 812.

The side wall of the kiln door 2 is provided with a plug-in groove 83 which is matched with the positioning block 82 and the connecting block 811 in a plug-in manner, and the outer side walls of the positioning block 82 and the connecting block 811 are flush with the side wall of the kiln door 2.

The implementation principle of a curing kiln in the embodiment of the application is as follows:

when the kiln door 2 is closed, the sealing block 25 extends into and abuts against the track 12, the sealing strip 24 abuts against the bottom plate, and the downward sunken track 12 is sealed through the arrangement of the sealing block 25.

When the kiln door 2 needs to be opened, the opening driving motor 43 drives the second gear 42 to rotate, the second gear 42 drives the first gear 41 to rotate, the first gear 41 drives the rotating shaft 31 to rotate, and the rotating shaft 31 rotates to move the kiln door 2 upwards along the sliding chute 13 and wind the kiln door on the rotating shaft 31. The pressure sensor is not subjected to the pressure of the kiln door 2, the pressure sensor transmits an electric signal to the controller, and the controller controls the indicator lamp 32 to turn red, indicating that the curing kiln is cured or the curing is not started.

When the kiln door 2 needs to be closed, the driving motor 43 is opened, the output shaft of the driving motor 43 rotates reversely to drive the second gear 42 to rotate reversely, the second gear 42 rotates to drive the first gear 41 to rotate, the first gear 41 rotates to drive the rotating shaft 31 to rotate, and the rotating shaft 31 rotates to move the kiln door 2 downwards along the chute 13. When the kiln door 2 is closed, the pressure sensor receives the pressure of the kiln door 2, the pressure sensor transmits an electric signal to the controller, and the controller controls the indicator lamp 32 to be green to indicate that the curing kiln is curing at the moment.

When location kiln door 2 to axis of rotation 31 are gone up, connect kiln door 2 on axis of rotation 31 through spacing subassembly 6 in advance, operating personnel stimulates spacing bolt 63, makes compression spring 72 further compress, passes axis of rotation 31 with second connecting block 23 after, and operating personnel loosens spacing bolt 63, makes spacing bolt 63 pass first stopper 61 under compression spring 72's elastic force and supports tightly on second connecting block 23.

The first connecting block 22 is inserted through the rotating shaft 31, the first connecting block 22 is positioned between the first positioning block 51 and the second positioning block 52, and the positioning bolt 53 is inserted through the first positioning block 51 and the first connecting block 22, and then the positioning bolt 53 is screwed with the second positioning block 52.

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 curing kiln, includes base (1) and sets up kiln body (11) on base (1), kiln body (11) bottom is provided with track (12) that are used for transporting the prefab, track (12) undercut, just outside track (12) extend to kiln body (11), kiln body (11) are provided with kiln door (2), its characterized in that outward: a sealing strip (24) with a bottom plate tightly abutted is arranged at the bottom of the kiln door (2), a sealing block (25) is connected onto the sealing strip (24), and the sealing block (25) extends into and tightly abuts against the track (12); be provided with coupling assembling (8) that are used for location sealing strip (24) on kiln door (2), coupling assembling (8) are including locating lever (81) and locating piece (82), locating lever (81) are connected with sealing strip (24), locating lever (81) one end is connected with connecting block (811), kiln door (2) are worn out and are connected with locating piece (82) to the one end that connecting block (811) were kept away from in locating lever (81).

2. A curing kiln as defined in claim 1, wherein: one end, far away from the connecting block (811), of the positioning rod (81) is connected with a screw rod (812), and a threaded hole (821) in threaded fit with the screw rod (812) is formed in the positioning block (82).

3. A curing kiln as defined in claim 2, wherein: the side wall of the kiln door (2) is provided with an insertion groove (83) which is in insertion fit with the positioning block (82) and the connecting block (811); the outer side walls of the positioning block (82) and the connecting block (811) are flush with the side wall of the kiln door (2).

4. A curing kiln as defined in claim 1, wherein: kiln door (2) bottom is seted up and is pegged graft complex spread groove (26) with sealing strip (24), be connected with on spread groove (26) lateral wall protruding (261), seted up on sealing strip (24) lateral wall and pegged graft complex recess (241) with protruding (261).

5. A curing kiln as defined in claim 1, wherein: the kiln comprises a kiln body (11) and is characterized in that an installation box (3) is arranged on the kiln body (11), a driving assembly (4) used for opening a kiln door (2) is arranged on the installation box (3), the driving assembly (4) comprises a first gear (41), a second gear (42) and a driving motor (43) capable of rotating forwards and backwards, a rotating shaft (31) is connected in the installation box (3) in a rotating mode, the rotating shaft (31) is connected with the kiln door (2), the first gear (41) is coaxially connected to the rotating shaft (31), the second gear (42) is coaxially connected to an output shaft of the driving motor (43), and the first gear (41) is meshed with the second gear (42); the kiln is characterized in that a sliding groove (13) is formed in the kiln body (11), and a sliding block (21) which is matched with the sliding groove (13) in a sliding mode is connected to the kiln door (2).

6. A curing kiln according to claim 5, characterized in that: the upper end of the kiln door (2) is connected with a first connecting block (22), and a positioning assembly (5) for positioning the first connecting block (22) is arranged on the rotating shaft (31); the positioning assembly (5) comprises a first positioning block (51), a second positioning block (52) and a positioning bolt (53), the first positioning block (51) and the second positioning block (52) are connected to the rotating shaft (31), the first connecting block (22) penetrates through the rotating shaft (31) and then is located between the first positioning block (51) and the second positioning block (52), and the positioning bolt (53) penetrates through the first positioning block (51), the first connecting block (22) and then is in threaded connection with the second positioning block (52).

7. A curing kiln as defined in claim 6, wherein: the upper end of the kiln door (2) is connected with a second connecting block (23), a pre-limiting component (6) used for pre-positioning the second connecting block (23) is arranged on the rotating shaft (31), the pre-limiting component (6) comprises a first limiting block (61), a second limiting block (62) and a limiting bolt (63), the first limiting block (61) and the second limiting block (62) are connected onto the rotating shaft (31), the second connecting block (23) penetrates through the rotating shaft (31) and then is located between the first limiting block (61) and the second limiting block (62), and the limiting bolt (63) penetrates through the first limiting block (61) and then is in plug-in fit with the second connecting block (23); the first limiting block (61) is provided with a supporting component (7) which is used for supporting the limiting bolt (63) on the second connecting block (23).

8. A curing kiln as defined in claim 7, wherein: the abutting assembly (7) comprises an abutting piece (71) and a compression spring (72), an installation block (73) is connected to the first limiting block (61), an installation groove (731) is formed in the installation block (73), the abutting piece (71) is connected in the installation groove (731) in a sliding mode, and the abutting piece (71) is connected to a limiting bolt (63); one end of the compression spring (72) is connected with one end, far away from the first limit block (61), of the abutting sheet (71), and the other end of the compression spring is connected with one end, far away from the first limit block (61), of the mounting groove (731).

9. A curing kiln according to claim 5, characterized in that: the installation box (3) is connected with an indicator lamp (32), the bottom plate is connected with a pressure sensor and a controller, the pressure sensor transmits an electric signal to the controller when receiving the pressure of the kiln door (2), and the controller controls the indicator lamp (32) to turn green; when the pressure sensor is not under the pressure of the kiln door (2), an electric signal is transmitted to a controller, and the controller controls an indicator lamp (32) to turn red.