CN212888296U - Fire engineering installation is with perforating device that wears wall - Google Patents

Fire engineering installation is with perforating device that wears wall Download PDF

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Publication number
CN212888296U
CN212888296U CN202021452848.5U CN202021452848U CN212888296U CN 212888296 U CN212888296 U CN 212888296U CN 202021452848 U CN202021452848 U CN 202021452848U CN 212888296 U CN212888296 U CN 212888296U
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China
Prior art keywords
belt wheel
fixed
block
belt
groove
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CN202021452848.5U
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Chinese (zh)
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陈俊雄
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Beijing Jingtie Jinlong Railway Fire Fighting Engineering Co ltd
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Beijing Jingtie Jinlong Railway Fire Fighting Engineering Co ltd
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Abstract

The utility model relates to a fire engineering installation is with perforating device that wears wall, including casing and drill bit, the drill bit rotates to be connected on the casing and one end stretches out the casing outside, casing internally mounted has the motor and rotates and be connected with the axis of rotation, the axis of rotation is parallel with motor output shaft's axis, motor output shaft's end fixing has band pulley one, the outside of axis of rotation is fixed with band pulley two and rotates and be connected with the axle sleeve, the outside of axle sleeve is fixed with band pulley three and gear one and the one end that the band pulley three set up near band pulley two at the axle sleeve, the outside that the drill bit is in the part in the casing is fixed with gear two and gear two intermeshing, band pulley two and band pulley three all carry out the transmission through same root belt with band pulley one, the inside switching module and the switching module that are provided with of casing can remove the position of belt. The utility model discloses have the condition that meets the drill bit and block among the drilling process and need not press the effect that the switch made the motor stop work.

Description

Fire engineering installation is with perforating device that wears wall
Technical Field
The utility model belongs to the technical field of the fire engineering installation technique and specifically relates to a wall perforating device is used in fire engineering installation.
Background
Fire engineering installations include the installation of fire alarm facilities, fire water supply facilities, fire smoke exhaust facilities, fire curtains, smoke flaps, fire doors and other fire protection facilities. Tools such as wall-penetrating punching devices are often used when installing fire-fighting engineering facilities.
Fire engineering installation is with perforating device that wears wall among the prior art includes casing, drill bit and handle, and the drill bit rotates to be connected outside inside and one end of casing stretches out the casing, and casing internally mounted has motor and drill bit to pass through drive mechanism and is connected with the motor, and the handle is fixed in the casing outside and is kept away from the one end of drill bit, installs on the casing switch and is connected for the electricity between motor and the switch.
Among the above-mentioned scheme, the staff is when using the fire engineering installation to wear the wall perforating device, press the switch and make motor drive drill bit circumferential direction, but when carrying out drilling work to the wall body, the phenomenon that the drill bit blocked can appear in the difficult circumstances, in order to avoid burning out when motor drill bit blocks the staff generally can press the switch and make the motor no longer circular telegram, restart motor carries out drilling work after the angle of adjustment drill bit, if the drilling in-process is because the drill bit blocks just to press the switch many times and can make work efficiency reduce and press the switch many times and also can harm the motor to some extent.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fire engineering installation is with perforating device that wears wall, it has the condition that meets the drill bit and block among the drilling process and need not press the effect that switch made the motor stop work.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides a fire engineering installation is with perforating device that wears wall, which comprises a housin and drill bit, the drill bit rotates to be connected on the casing and one end stretches out the casing outside, casing internally mounted has the motor and rotates and be connected with the axis of rotation, the axis of rotation is parallel with the axis of motor output shaft, the end fixing of motor output shaft has band pulley one, the outside of axis of rotation is fixed with band pulley two and rotates and be connected with the axle sleeve, the outside of axle sleeve is fixed with band pulley three and gear one and the one end that the setting of band pulley is close to band pulley two at the axle sleeve, the outside that the drill bit is in the part in the casing is fixed with gear two and gear one and gear two intermeshing, band pulley two and band pulley three all carry out the transmission through same root belt with band pulley one, the inside switching module and the switching module that are.
By adopting the technical scheme, the belt wheel II is fixed on the outer side of the rotating shaft, the belt wheel III is fixed on the outer side of the shaft sleeve, the shaft sleeve is rotatably connected to the rotating shaft, and the belt wheel II and the belt wheel III are both transmitted with the belt wheel I through the same belt, so that when the belt is positioned on the belt wheel I and the belt wheel II, the motor drives the belt wheel II and the rotating shaft to rotate through the belt wheel, and the shaft sleeve and the drill bit do not rotate in the operation process of the motor; when the belt is positioned on the first belt wheel and the third belt wheel, the motor drives the third belt wheel to rotate through the first belt wheel and the third belt wheel, the shaft sleeve and the drill bit can rotate along with the rotation of the third belt wheel, and the position of the belt can be moved due to the switching component, therefore, when a worker drills through the wall-through punching device for fire engineering installation, the belt sleeved on the first belt wheel and the second belt wheel can be moved to the outer sides of the first belt wheel and the third belt wheel by the switching component, or the belt sleeved on the outer sides of the first belt wheel and the third belt wheel is moved to the outer sides of the first belt wheel and the second belt wheel so as to control whether the drill bit rotates or not, when a drill bit of a harder part is clamped in the wall drilling process, a worker can stop the motor without pressing a switch, and only the belt is moved to the outer sides of the first belt wheel and the second belt wheel from the outer sides of the first belt wheel and the third belt wheel by using the switching assembly, so that the motor can be protected from being burnt out, and the working efficiency can also be improved.
The utility model discloses further set up to: the switching component comprises a shifting block, two through holes are formed in the shifting block, the belt penetrates through the two through holes to be arranged in the shifting block, and the shifting block is connected to the inside of the shell in a sliding mode.
Through adopting above-mentioned technical scheme, because slider sliding connection wears to establish the inside at the shifting block at inside and belt of casing through two through-holes to the staff can make the position of belt move through stirring the shifting block, can move the outside of band pulley one with band pulley three or move the outside of band pulley one with band pulley three by the outside of band pulley one with band pulley two, thereby can control whether the drill bit rotates.
The utility model discloses further set up to: the novel belt wheel is characterized in that a guide groove is formed in the shell, the direction of the guide groove is consistent with the axis direction of the second belt wheel and the axis direction of the third belt wheel, a first stop block is arranged at the bottom of the shifting block, a second stop block is fixed at the bottom of the first stop block and fixed with a connecting block, the connecting block is embedded into the guide groove, the side wall of the first stop block and the side wall of the second stop block are attached to the inner wall of the guide groove, and the side wall of the first stop.
Through adopting above-mentioned technical scheme, dog one sets up the bottom at the shifting block, the connecting block is fixed in the bottom of dog one and is embedded in the inside of guide way, the bottom of connecting block is fixed with dog two, because the lateral wall laminating of connecting block and the lateral wall laminating of guide way and the lateral wall and the casing laminating of dog two, thereby the staff can make the connecting block slide in the inside of spout through promoting dog two, and the steady condition that can not appear rocking of slip process, dog one and the shifting block at its top also can be along with the motion when the connecting block is gliding, the removal of shifting block can change the position of belt, and then can control whether the drill bit rotates.
The utility model discloses further set up to: grooves are formed in the surfaces of the second belt wheel and the third belt wheel, and the cross sections of the grooves are arc-shaped.
Through adopting above-mentioned technical scheme, the setting of recess can play the effect of restriction to the position of belt in static and motion, makes the belt can not change easily between the position of band pulley two and band pulley three, thereby avoids the belt because the vibration that the drill bit took place when driling changes the position that is in between band pulley two or band pulley three, and then makes the installation of fire engineering with wall perforating device's structure more reasonable.
The utility model discloses further set up to: the section of the belt is circular.
Through adopting above-mentioned technical scheme, because the cross-section of belt is circular to the staff can be very easy through promoting the position that the shifting block changed the belt, and then whether control drill bit rotates.
The utility model discloses further set up to: and one sides of the second belt wheel and the third belt wheel, which are far away from each other, are respectively fixed with a baffle, and the outer diameter of the baffle is larger than that of the circular cross sections of the second belt wheel and the third belt wheel.
Through adopting above-mentioned technical scheme, the setting of baffle can avoid the belt to break away from band pulley two or band pulley three to it is more reasonable to make fire engineering installation with wall perforating device's structure.
The utility model discloses further set up to: the casing outside is provided with the handle in the below of guide way, and the vertical groove of dodging of having seted up in the top of handle, and the bottom of dog two is fixed with the connecting rod of vertical setting, and dog two all sets up in the inside of dodging the groove with the connecting rod, and the spout has been seted up at the position level of dodging the tank bottom to the handle, and the direction of seting up of spout is unanimous with the direction of seting up of guide way and spout and the inside intercommunication of dodging the groove, and the bottom of connecting rod is fixed with the slider, and the outside that the spout was stretched out at the inside and.
By adopting the technical scheme, the handle is arranged below the guide groove outside the shell, the top of the handle is vertically provided with the avoidance groove, the connecting rod is vertically fixed at the bottom of the second stop block, the second stop block and the connecting rod are both arranged inside the avoidance groove, the sliding groove is arranged at the bottom of the avoidance groove, the sliding groove is communicated with the inside of the avoidance groove, the sliding block is fixed at the bottom of the connecting rod, the sliding block is embedded into the sliding groove, two ends of the sliding block extend out of the sliding groove, when a worker holds the handle to operate the wall-penetrating perforating device for fire engineering installation, the sliding block can slide in the sliding groove by pressing the sliding block, so that the second push block and the connecting rod move inside the avoidance groove, the movement of the second push block can drive the shifting block and the position of the belt to move, so that the belt can be switched between the second belt wheel and the third belt, when the shifting block moves the position of, the lateral wall of the second stop block is attached to the inner wall of the avoiding groove, when the shifting block moves the position of the belt to the outer sides of the first belt wheel and the third belt wheel, the lateral wall of the second stop block is attached to the other side of the inner wall of the avoiding groove, the limiting effect can be achieved, and the position of the belt is prevented from being separated from the second belt wheel or the third belt wheel.
The utility model discloses further set up to: the side surfaces of the two vertical directions of the sliding block extending out of the sliding groove are provided with anti-skidding lines.
Through adopting above-mentioned technical scheme, the staff wears the wall work of punching for a long time, can be stained with the dust on hand, and the setting of antiskid line can avoid the staff to skid when pressing the slider hand.
The utility model discloses further set up to: the bottom at both ends of the sliding block is respectively and vertically provided with a containing groove, the cross sections of the two containing grooves passing through the axis are in a T shape, a limiting pin is arranged in each containing groove, a blocking piece is fixed at one end of each limiting pin in each containing groove, the cross sectional area of each blocking piece is larger than that of each limiting pin, a spring is arranged in each containing groove, one end of each spring is abutted to the inner wall of each containing groove, the other end of each spring is abutted to the corresponding blocking piece, and the portion, extending out of each containing groove, of each limiting pin is hemispherical.
By adopting the technical scheme, the cross section of the axial line of the placing groove is T-shaped, the blocking piece is fixed at one end of the limiting pin in the placing groove, the blocking piece is arranged to prevent the limiting pin from completely separating from the outer side of the placing groove because the cross section area of the blocking piece is larger than that of the limiting pin, the two ends of the spring are respectively abutted against the inner wall of the placing groove and the blocking piece, and the part of the limiting pin extending out of the placing groove is hemispherical, so that when a worker presses the sliding block to drive the connecting rod, the second block, the connecting block, the first block and the shifting block to move, the shifting block is utilized to change the position of the belt to further control whether the drill bit rotates, when the shifting block moves the position of the belt to the outer sides of the first belt wheel and the second belt wheel or moves the position of the belt to the outer sides of the first belt wheel and the third belt, the side wall of the second, the outside that the standing groove can be played spacing effect that stops to the slider by the spacer pin and the spacer pin in the outside that the slider stretches out the spacer pin of the more one end of spout, avoid the slider self to take place the position change when not receiving external thrust, the other end of slider stretches out the inside that the spacer pin of the outer less one end of spout is in the spout and is in the state that the spring is in the shrink promptly this moment, the spacer pin can be very easy inside entering into the spout when the hemispherical part of spacer pin can make the slider receive external thrust, thereby it is more reasonable to make the fire engineering installation with wall perforating device's structure.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the second belt wheel is fixed on the outer side of the rotating shaft, the third belt wheel is fixed on the outer side of the shaft sleeve, the shaft sleeve is rotatably connected to the rotating shaft, and the second belt wheel and the third belt wheel and the first belt wheel are both in transmission through the same belt; when the belt is positioned on the first belt wheel and the third belt wheel, the motor drives the third belt wheel to rotate through the first belt wheel and the third belt wheel, the shaft sleeve and the drill bit can rotate along with the rotation of the third belt wheel, and the position of the belt can be moved due to the switching component, therefore, when a worker drills through the wall-through punching device for fire engineering installation, the belt sleeved on the first belt wheel and the second belt wheel can be moved to the outer sides of the first belt wheel and the third belt wheel by the switching component, or the belt sleeved on the outer sides of the first belt wheel and the third belt wheel is moved to the outer sides of the first belt wheel and the second belt wheel so as to control whether the drill bit rotates or not, when a drill bit of a hard part is clamped in the wall drilling process, a worker can stop the motor without pressing a switch by moving a belt from the outer sides of a first belt wheel and a third belt wheel to the outer sides of the first belt wheel and a second belt wheel by using a switching assembly, so that the motor can be protected from being burnt out, and the working efficiency can be improved;
2. the first check block is arranged at the bottom of the shifting block, the connecting block is fixed at the bottom of the first check block and is embedded into the guide groove, the second check block is fixed at the bottom of the connecting block, the side wall of the connecting block is attached to the side wall of the guide groove, and the side walls of the first check block and the second check block are attached to the shell, so that a worker can push the second check block to enable the connecting block to slide in the sliding groove, the sliding process is stable, the shaking situation cannot occur, the first check block and the shifting block at the top of the connecting block can move when the connecting block slides, the position of a belt can be changed by the movement of the shifting block, and whether a drill bit;
3. the handle is arranged below the guide groove outside the shell, the top of the handle is vertically provided with an avoidance groove, the connecting rod is vertically fixed at the bottom of the second stop block, the second stop block and the connecting rod are both arranged inside the avoidance groove, the sliding groove is arranged at the bottom of the avoidance groove, the sliding groove is communicated with the inside of the avoidance groove, the sliding block is fixed at the bottom of the connecting rod, the sliding block is embedded into the sliding groove, two ends of the sliding block extend out of the sliding groove, when a worker holds the handle to operate the wall-penetrating perforating device for fire engineering installation, the sliding block can slide in the sliding groove by pressing the sliding block, the second push block and the connecting rod move inside the avoidance groove, the second push block can drive the shifting block and the belt to move, so that the belt can carry out position switching between the second belt wheel and the third belt, when the shifting block moves the belt to the outer sides of the first belt wheel and the second belt wheel, the side wall of, when the shifting block moves the position of the belt to the outer sides of the first belt wheel and the third belt wheel, the side wall of the second stop block is attached to the other side of the inner wall of the avoiding groove, so that the limiting effect can be achieved, and the position of the belt is prevented from being separated from the second belt wheel or the third belt wheel.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic sectional view of the present invention;
FIG. 3 is a schematic structural view of the present invention (with the housing, handle and part of the switching assembly removed);
fig. 4 is a partially enlarged schematic view of a portion a in fig. 2.
In the figure, 1, a housing; 11. a guide groove; 12. a switch; 2. a drill bit; 21. a second gear; 3. a motor; 31. a first belt wheel; 41. a rotating shaft; 42. a shaft sleeve; 43. a second belt wheel; 44. a third belt wheel; 45. a first gear; 46. a groove; 47. a baffle plate; 5. a belt; 6. a switching component; 61. shifting blocks; 611. a through hole; 62. a first stop block; 63. connecting blocks; 64. a second stop block; 65. a connecting rod; 66. a slider; 661. a placement groove; 662. a spacing pin; 663. a baffle plate; 664. a spring; 7. a handle; 71. an avoidance groove; 72. a chute.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a fire engineering installation is with perforating device that wears wall, including casing 1, drill bit 2 and install switch 12 on casing 1, drill bit 2 rotates to be connected on casing 1 and one end stretches out the casing 1 outside. Referring to fig. 2 and 3, the motor 3 is installed inside the housing 1, the motor 3 is electrically connected to the switch 12, the rotating shaft 41 is rotatably connected to the housing 1, and the rotating shaft 41 is parallel to the axis of the output shaft of the motor 3. The end of the output shaft of the motor 3 is fixed with a first belt wheel 31, the outer side of the rotating shaft 41 is fixed with a second belt wheel 43 and is rotatably connected with a shaft sleeve 42, the outer side of the shaft sleeve 42 is fixed with a third belt wheel 44 and a first gear 45, and the third belt wheel 44 is arranged at one end, close to the second belt wheel 43, of the shaft sleeve 42. The surfaces of the second belt wheel 43 and the third belt wheel 44 are both provided with grooves 46, and the cross sections of the grooves 46 are arc-shaped. And a baffle plate 47 is fixed on one side of the second pulley 43, which is far away from the third pulley 44, and the outer diameter of the baffle plate 47 is larger than that of the circular cross sections of the second pulley 43 and the third pulley 44. The second belt wheel 43 and the third belt wheel 44 are both in transmission with the first belt wheel 31 through the same belt 5, and the section of the belt 5 is circular or oval. The second gear 21 is fixed on the outer side of the part of the drill bit 2 in the shell 1, and the first gear 45 is meshed with the second gear 21.
Referring to fig. 2, the switching assembly 6 is installed in the housing 1, the switching assembly 6 includes a shifting block 61, two through holes 611 are opened on the shifting block 61, and the belt 5 is inserted into the shifting block 61 through the two through holes 611. The housing 1 is provided with a guide groove 11, and the opening direction of the guide groove 11 is consistent with the axial direction of the second belt wheel 43 and the third belt wheel 44. The bottom of the shifting block 61 is detachably connected with a first stop block 62, the bottom of the first stop block 62 is fixed with a connecting block 63, the bottom of the connecting block 63 is fixed with a second stop block 64, the connecting block 63 is embedded into the guide groove 11, the side wall of the first stop block 62 is attached to the inner wall of the guide groove 11, and the side wall of the second stop block 64 is attached to the shell 1. The handle 7 is arranged on the outer side of the shell 1 below the guide groove 11, the avoiding groove 71 is vertically formed in the top of the handle 7, the connecting rod 65 which is vertically arranged is fixed at the bottom of the second stopper 64, and the second stopper 64 and the connecting rod 65 are both arranged inside the avoiding groove 71. The handle 7 is horizontally provided with a sliding groove 72 at the bottom of the avoiding groove 71, the opening direction of the sliding groove 72 is consistent with the opening direction of the guide groove 11, and the sliding groove 72 is communicated with the inside of the avoiding groove 71. The bottom of the connecting rod 65 is fixed with a slide block 66, the slide block 66 is embedded in the slide groove 72, and two ends of the slide block 66 extend out of the slide groove 72. The two vertical sides of the sliding block 66 extending out of the sliding groove 72 are provided with anti-slip threads.
Referring to fig. 2 and 4, two placing grooves 661 are vertically formed at the bottom of each of the two ends of the slider 66, and the cross-sections of the two placing grooves 661 passing through the axis are both T-shaped. A limit pin 662 is arranged inside each placing groove 661, a baffle 663 is fixed at one end, located in the placing groove 661, of the limit pin 662, and the cross-sectional area of the baffle 663 is larger than that of the limit pin 662. Each placing groove 661 is internally provided with a spring 664, one end of the spring 664 abuts against the inner wall of the placing groove 661 and the other end abuts against the blocking piece 663, and the part of the limiting pin 662 extending out of the placing groove 661 is hemispherical.
The embodiment of the present invention is a preferred embodiment of the present invention, and the protection scope of the present invention is not limited by this, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (9)

1. The utility model provides a fire engineering installation is with perforating device that wears wall, includes casing (1) and drill bit (2), and drill bit (2) rotate to be connected on casing (1) and one end stretches out casing (1) outside, its characterized in that: a motor (3) is installed inside a shell (1) and is rotatably connected with a rotating shaft (41), the rotating shaft (41) is parallel to the axis of an output shaft of the motor (3), a first belt wheel (31) is fixed at the end part of the output shaft of the motor (3), a second belt wheel (43) is fixed on the outer side of the rotating shaft (41) and is rotatably connected with a shaft sleeve (42), a third belt wheel (44) and a first gear (45) are fixed on the outer side of the shaft sleeve (42), the third belt wheel (44) is arranged at one end, close to the second belt wheel (43), of the shaft sleeve (42), a second gear (21) is fixed on the outer side of the part, located inside the shell (1), of a drill bit (2), the first gear (45) is meshed with the second gear (21), the second belt wheel (43) and the third belt wheel (44) are both driven by the same belt (5) as the first belt wheel (31), a switching assembly (6) is arranged inside the shell (1), and, the shell (1) is provided with a switch (12) and the motor (3) is electrically connected with the switch (12).
2. A fire engineering installation of using perforating device as claimed in claim 1, characterized in that: switch over subassembly (6) including shifting block (61), seted up two through-holes (611) on shifting block (61), belt (5) wear to establish in the inside of shifting block (61) through two through-holes (611), and shifting block (61) sliding connection is in the inside of casing (1).
3. A fire engineering installation of using perforating device as claimed in claim 2, characterized in that: the novel belt wheel is characterized in that a guide groove (11) is formed in the shell (1), the forming direction of the guide groove (11) is consistent with the axis direction of the second belt wheel (43) and the third belt wheel (44), a first stop block (62) is arranged at the bottom of the shifting block (61), a connecting block (63) is fixed at the bottom of the first stop block (62), a second stop block (64) is fixed at the bottom of the connecting block (63), the connecting block (63) is embedded into the guide groove (11), the side wall of the first stop block (62) and the side wall of the second stop block (64) are attached to the shell (1).
4. A fire engineering installation of using perforating device as claimed in claim 1, characterized in that: the surfaces of the second belt wheel (43) and the third belt wheel (44) are both provided with grooves (46), and the cross sections of the grooves (46) are arc-shaped.
5. A fire engineering installation is with perforating device that passes through wall as claimed in claim 4, characterized in that: the section of the belt (5) is circular.
6. A fire engineering installation of using perforating device as claimed in claim 1, characterized in that: and a baffle plate (47) is fixed on one side of the second belt wheel (43) and the third belt wheel (44) which are far away from each other, and the outer diameter of the baffle plate (47) is larger than that of the circular cross sections of the second belt wheel (43) and the third belt wheel (44).
7. A fire engineering installation of using perforating device as claimed in claim 3, characterized in that: casing (1) outside is provided with handle (7) in the below of guide way (11), the top of handle (7) is vertical has been seted up and has been dodged groove (71), the bottom of dog two (64) is fixed with connecting rod (65) of vertical setting, dog two (64) all set up in the inside of dodging groove (71) with connecting rod (65), handle (7) have been seted up spout (72) at the position level of dodging groove (71) bottom, the direction of seting up of spout (72) is unanimous with the direction of seting up of guide way (11) and spout (72) and the inside intercommunication of dodging groove (71), the bottom of connecting rod (65) is fixed with slider (66), the outside that inside and both ends that slider (66) were embedded into spout (72) are stretched out spout (72).
8. A fire engineering installation of using perforating device as claimed in claim 7, characterized in that: the side surfaces of the two vertical directions, extending out of the sliding groove (72), of the sliding block (66) are provided with anti-slip threads.
9. A fire engineering installation of using perforating device as claimed in claim 7, characterized in that: the bottom at both ends of the sliding block (66) is respectively and vertically provided with a placing groove (661), the cross sections of the two placing grooves (661) passing through the axis are T-shaped, a limit pin (662) is arranged inside each placing groove (661), a blocking piece (663) is fixed at one end, located in each placing groove (661), of each limit pin (662), the cross sectional area of each blocking piece (663) is larger than that of each limit pin (662), a spring (664) is arranged inside each placing groove (661), one end of each spring (664) is abutted to the inner wall of each placing groove (661), the other end of each spring (664) is abutted to the corresponding blocking piece (663), and the portion, extending out of each placing groove (661), of each limit pin (662) is hemispherical.
CN202021452848.5U 2020-07-21 2020-07-21 Fire engineering installation is with perforating device that wears wall Active CN212888296U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021452848.5U CN212888296U (en) 2020-07-21 2020-07-21 Fire engineering installation is with perforating device that wears wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021452848.5U CN212888296U (en) 2020-07-21 2020-07-21 Fire engineering installation is with perforating device that wears wall

Publications (1)

Publication Number Publication Date
CN212888296U true CN212888296U (en) 2021-04-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021452848.5U Active CN212888296U (en) 2020-07-21 2020-07-21 Fire engineering installation is with perforating device that wears wall

Country Status (1)

Country Link
CN (1) CN212888296U (en)

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