CN213086553U - Unit type self-slagging telescopic device - Google Patents
Unit type self-slagging telescopic device Download PDFInfo
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- CN213086553U CN213086553U CN202020907145.0U CN202020907145U CN213086553U CN 213086553 U CN213086553 U CN 213086553U CN 202020907145 U CN202020907145 U CN 202020907145U CN 213086553 U CN213086553 U CN 213086553U
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- slag discharging
- discharging part
- adhesive tape
- mounting groove
- sediment
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Abstract
The utility model provides a unit formula is from arranging sediment telescoping device, include: the two beam bodies are parallel to each other and arranged at intervals, and mounting grooves are formed in the side faces, close to each other, of the two beam bodies; the adhesive tape comprises a slag discharging part, mounting parts are respectively arranged on two sides of the slag discharging part along the width direction of the beam body, the mounting parts on the two sides are respectively clamped into the two mounting grooves of the two beam bodies, the top of the slag discharging part is of an upward-convex arc structure, an avoiding cavity with openings at two ends is arranged on the slag discharging part, the bottom and the top of the slag discharging part are integrally formed, and the slag discharging part and the two mounting parts are integrally formed; when two roof beam bodies extrude the both sides of adhesive tape simultaneously, arrange the bottom and the top of sediment portion and can take place to warp simultaneously to the foreign matter that will fall into between two roof beam bodies pushes away outside the roof beam seam of extruding two roof beam body formations, like this alright go out with the foreign matter top such as dust and sand, soil stone disintegrating slag that falls into on the adhesive tape, thereby make the unit formula from arranging the sediment telescoping device and need not with the help of external force alright make and realize arranging the sediment automatically.
Description
Technical Field
The disclosed embodiments relate generally to and belong to the field of bridge telescoping, and more specifically, relate to a be used for unit formula from arranging sediment telescoping device.
Background
Under the influence of factors such as temperature change, concrete shrinkage, live load effect, settlement of bridge abutments, creep and the like, a bridge collapse structure can continuously generate deformation and displacement, and in order to meet the deformation requirement of a bridge deck structure, expansion joint devices are usually arranged between two beam ends, between the beam ends and the bridge abutments or at the position of a hinge joint of a bridge. However, through observation of the traditional expansion device, soil and stone debris accumulated in the gap are pressed by a running vehicle and deformed and extruded by the bridge, so that the rubber waterproof strip is damaged, the water leakage of the expansion joint is caused, and the durability of the bridge is influenced. However, the rubber waterproof strip of the conventional expansion joint device cannot automatically discharge sand, dust, road garbage and the like by means of external force after the foreign matters such as sand, dust, road garbage, soil, stone, broken slag and the like fall into the expansion joint device.
Therefore, how to provide an expansion joint device capable of automatically discharging slag without external force is a problem to be solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a unit formula is from arranging sediment telescoping device.
According to the utility model discloses an embodiment of the first aspect provides a unit formula is from arranging sediment telescoping device, include:
the two beam bodies are parallel to each other and arranged at intervals, and the side surfaces, close to each other, of the two beam bodies are respectively provided with a first mounting groove and a second mounting groove;
the adhesive tape comprises a slag discharging part, two mounting parts are respectively arranged on the two sides of the slag discharging part along the width direction of the beam body, the two mounting parts are respectively clamped and mounted in the first mounting groove and the second mounting groove, the slag discharging part comprises a slag discharging part bottom and a slag discharging part top, the top of the slag discharging part is an arc-shaped structure protruding upwards, the width of the slag discharging part bottom is reduced from top to bottom, an avoiding cavity is arranged on the slag discharging part, two end openings are arranged in the avoiding cavity along the length direction of the beam body, the slag discharging part bottom and the slag discharging part top are integrally formed, and the slag discharging part and the two mounting parts are integrally formed;
when the two beam bodies extrude the adhesive tape at the same time, the bottom and the top of the slag discharging part can deform at the same time, so that the foreign matters falling between the two beam bodies are pushed out of beam seams formed by the two beam bodies.
In the above technical solution, preferably, the avoiding cavity is enclosed by the bottom of the slag discharge part and the top of the slag discharge part; wherein, the width of arranging sediment portion bottom reduces from top to bottom gradually, or the both sides of arranging sediment portion bottom are the arc adduction from top to bottom, it is the arc structure to arrange sediment portion top.
In the above technical solution, preferably, the top surface of the avoiding cavity is an arc surface or an arc surface, and/or the side wall surface of the avoiding cavity is an arc surface or an inclined surface extending gradually inward from top to bottom.
In the above technical solution, preferably, the mounting portion includes a fastening portion that is installed in cooperation with the beam body and a connecting portion that is connected between the slag discharge portion and the fastening portion, and the connecting portion is an arc-shaped structure that protrudes upward.
In the above technical solution, preferably, the adhesive tape is a rubber strip or a silica gel strip.
In the above technical scheme, preferably, first mounting groove with be provided with one in trip and the draw-in groove on the last lateral wall of second mounting groove, two correspond on the installation department and be provided with the trip with another in the draw-in groove, two the installation department is gone into respectively the card and is installed first mounting groove with in the second mounting groove, the trip card is gone into to install in the draw-in groove.
In a specific technical scheme, two the roof beam body is the boundary beam, and the adhesive tape direct mount is between two boundary beams promptly, and at this moment, the unit formula is from arranging sediment telescoping device only two boundary beams, and does not set up the centre sill in the middle of two boundary beams.
In another concrete technical scheme, the unit formula is from arranging the sediment telescoping device and including the at least three roof beam body that is parallel to each other and the interval set up, at least three roof beam body includes two boundary beams and sets up at least one well roof beam between two boundary beams, wherein, in the at least three roof beam body, be provided with respectively on the side that arbitrary two adjacent roof beam bodies are close to each other first mounting groove with the second mounting groove, and all be provided with one between arbitrary two adjacent roof beam bodies the adhesive tape, and arbitrary an installation department of adhesive tape all corresponds the card and goes into in its first mounting groove that corresponds the roof beam body, arbitrary another installation department of adhesive tape all corresponds the card and goes into in its second mounting groove that corresponds the roof beam body.
Further preferably, the unit type self-deslagging telescopic device further comprises: two sliding boxes which are parallel to each other and are arranged at intervals; one end of the cross beam is arranged in one sliding box, and the other end of the cross beam is arranged in the other sliding box; one boundary beam of the at least three beam bodies is arranged on the upper end face of one sliding box, the other boundary beam of the at least three beam bodies is arranged on the upper end face of the other sliding box, and at least one middle beam of the at least three beam bodies is arranged on the cross beam.
Wherein, when the unit formula is from arranging sediment telescoping device and including the at least three roof beam body that is parallel to each other and the interval set up, all can install an above-mentioned adhesive tape between two roof beam bodies of all adjacent settings, certainly, in other schemes, in at least three roof beam body, also can only install an above-mentioned adhesive tape between two roof beam bodies of a set of adjacent settings, and other similar sealing strip structures of mountable between two roof beam bodies of other adjacent settings, and do not necessarily all install above-mentioned same adhesive tape between the roof beam body.
Preferably, the two edge beams are respectively installed on the upper end surfaces of the two sliding boxes through bolts.
According to the utility model discloses a unit formula is from arranging sediment telescoping device, including two roof beam bodies that are parallel to each other and the interval sets up and install the adhesive tape between two roof beam bodies, and the both sides of adhesive tape are gone into respectively through the installation department card and are installed in the draw-in groove that two roof beam bodies correspond, have just so realized the adhesive tape between two roof beam bodies fixed. And the middle part of adhesive tape is for arranging sediment portion, the top surface of arranging sediment portion is bellied arcwall face upwards, just so when making the both sides of adhesive tape extrude simultaneously, arrange sediment portion can upwards take place to warp, thereby make the arcwall face upwards take place to warp, and then arrange sediment portion based on the adhesive tape just can be with falling into the dust and sand on the adhesive tape, road surface rubbish, foreign matter such as soil stone disintegrating slag is gone out on the top, and the dust and sand that is extruded, road surface rubbish, foreign matter such as soil stone disintegrating slag can be taken away by past vehicle, need not just so to make the unit formula realize automatic row's sediment telescoping device from arranging sediment with the help of external force and arrange sediment, and then can avoid the long-term overstock of foreign matter such as soil to cause flexible not. And through set up both ends open-ended dodge the chamber on row sediment portion, make row sediment portion can form into inside hollow annular structure, and just so can reduce the intensity of arranging sediment portion, strengthen the toughness of arranging sediment portion, dodge the chamber simultaneously and can dodge the both sides of arranging sediment portion when arranging the both sides compressive deformation of sediment portion, thereby for the deformation of arranging sediment portion both sides provides the buffering region, make the both sides of arranging sediment portion can move to the inboard when the pressurized, thereby can make the top of arranging sediment portion upwards take place to warp, and then realize the automatic row of sediment of high efficiency. Experiments show that the slag discharging proportion of the structure can reach over 75 percent, and the slag soil in the seam can be effectively reduced. And arrange the bottom and the top integrated into one piece of sediment portion, arrange sediment portion and two installation department integrated into one piece, that is to say that the adhesive tape is the integral structure that a disposable processing came out, does not assemble the welding through the part of difference and forms, just so can improve the elasticity of adhesive tape, the life of extension adhesive tape reduces the damaged probability of adhesive tape. Preferably, the rubber strip is a rubber strip or a silica gel strip, the bottom of the slag discharging part is V-shaped, and the two adjacent beam bodies can be two adjacent edge beams or one edge beam and one middle beam.
It should be understood that what is described in this disclosure section is not intended to limit key or critical features of embodiments of the invention, nor is it intended to be used to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:
fig. 1 is a schematic structural diagram illustrating a state of a unit-type self-deslagging telescopic device provided by an embodiment of the disclosure when deslagging is not performed;
FIG. 2 is a schematic structural diagram illustrating a state of the unit-type self-deslagging telescopic device provided by the embodiment of the disclosure during deslagging;
fig. 3 shows a schematic structural view of the rubber strip of the unit type self-slagging telescopic device before deformation.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:
1 boundary beam, 2 middle beams, 3 adhesive tapes, 30 installation parts, 300 clamping grooves, 302 clamping parts, 304 connecting parts, 32 slag discharging parts, 320 avoiding cavities, 322 slag discharging parts, 324 slag discharging parts, 4 first mounting grooves, 5 second mounting grooves, 6 sliding boxes and 7 cross beams.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
As shown in fig. 1 to 3, according to an embodiment of the first aspect of the present invention, there is provided a unit type self-deslagging telescopic device, including:
the two beam bodies are parallel to each other and arranged at intervals, and the side surfaces, close to each other, of the two beam bodies are respectively provided with a first mounting groove 4 and a second mounting groove 5, wherein the two beam bodies can be specifically an edge beam 1 and a middle beam 2 which are adjacently arranged in fig. 1, and also can be two middle beams 2 which are adjacently arranged in fig. 1;
when the two beams simultaneously press the rubber strips 3, as shown in fig. 1 and 2, the bottom and the top of the slag discharging part 32 can be simultaneously deformed so as to push and extrude the foreign matters falling between the two beams out of the beam gap formed by the two beams.
According to the utility model discloses a unit formula is from arranging sediment telescoping device, including two roof beams bodies that are parallel to each other and the interval sets up and install adhesive tape 3 between two roof beams bodies, and adhesive tape 3's both sides are gone into respectively through installation department 30 and are installed in the draw-in groove that two roof beams bodies correspond, have just so realized adhesive tape 3 fixed between two roof beams bodies. And the middle part of adhesive tape 3 is for arranging sediment portion 32, the top surface of arranging sediment portion 32 is the bellied arcwall face that makes progress, just so when making the both sides of adhesive tape 3 extruded simultaneously, arrange sediment portion 32 and can upwards take place to warp, thereby make the arcwall face upwards take place to warp, and then arrange sediment portion 32 based on adhesive tape 3 and just can go into the dust and sand on adhesive tape 3, road surface rubbish, foreign matter such as soil stone disintegrating slag is gone out on the top, and the dust and sand that is extruded, road surface rubbish, foreign matter such as soil stone disintegrating slag can be taken away from by past vehicle, need not just so to make the unit formula realize automatic row's sediment from arranging sediment telescoping device with the help of external force, and then can avoid the long-term overstock of foreign matter such as sediment soil to. And through set up both ends open-ended dodge chamber 320 on row sediment portion 32, make row sediment portion 32 can form into the hollow annular structure in inside, and just so can reduce the intensity of arranging sediment portion 32, strengthen the toughness of arranging sediment portion 32, dodge chamber 320 simultaneously and can avoid opening the both sides of arranging sediment portion 32 when arranging the both sides compressive deformation of sediment portion 32, thereby provide the buffer region for the deformation of arranging sediment portion 32 both sides, make the both sides of arranging sediment portion 32 can move to the inboard when the pressurized, thereby can make the top of arranging sediment portion 32 upwards take place to warp, and then realize the automatic row of sediment of high efficiency. Experiments show that the slag discharging proportion of the structure can reach over 75 percent, and the slag soil in the seam can be effectively reduced. And arrange the bottom and the top integrated into one piece of sediment portion 32, arrange sediment portion 32 and two installation departments 30 integrated into one piece, that is to say that adhesive tape 3 is the integral structure that a disposable processing came out, does not assemble the welding through the part of difference and forms, just so can improve adhesive tape 3's elasticity, extension adhesive tape 3's life reduces the damaged probability of adhesive tape 3.
Wherein, the roof beam body of this application relies on the temperature to warp and realizes the extrusion to the both sides of adhesive tape 3 to make adhesive tape 3 can take place to warp and realize arranging the sediment automatically. In this application promptly, when the temperature of the roof beam body changes, the roof beam body takes place the inflation to take place the extrusion to adhesive tape 3, and adhesive tape 3 just can extrude away the dregs when extrusion deformation, thereby realize that the intelligence of dregs is got rid of.
Further preferably, as shown in fig. 3, the avoidance cavity 320 is enclosed by a slag discharge portion bottom 324 and a slag discharge portion top 322; wherein, the width of the bottom 324 of the slag discharging part is gradually reduced from top to bottom, or the two sides of the bottom 324 of the slag discharging part are in arc adduction from top to bottom, and the top 322 of the slag discharging part is in arc structure. Due to the arrangement, the bottom 324 of the slag discharging part is wide at the top and narrow at the bottom, so that the slag discharging part is more beneficial to deformation slag discharging.
Further preferably, as shown in fig. 3, the shape of the slag discharging portion is identical to the shape of the avoidance cavity 320.
Further preferably, as shown in fig. 3, the top surface of the avoidance cavity 320 is an arc surface or an arc surface, and/or the side wall surface of the avoidance cavity 320 is an arc surface or an inclined surface extending gradually inward from top to bottom. The arrangement makes the shape of the avoiding cavity 320 relatively similar to the whole shape of the slag discharging part, so that the wall thickness of the slag discharging part can be relatively uniform.
In any of the above solutions, preferably, as shown in fig. 3, the mounting portion 30 includes an engaging portion 302 engaged with the beam body and a connecting portion 304 connected between the slag discharging portion 32 and the engaging portion 302, and the connecting portion 304 is an arc structure protruding upward. With this arrangement, the mounting portion 30 of the rubber strip 3 can transmit the pressing force to the slag discharge portion 32 more easily, thereby improving the slag discharge effect.
In the above embodiment, the adhesive tape 3 is preferably a rubber tape or a silicone tape. Because the rubber strip or the silica gel strip are common, the sealing effect is good, and the toughness and the strength performance are moderate.
In the above embodiment, preferably, one of the hook and the slot is disposed on the upper side wall of the first mounting groove 4 and the second mounting groove 5, the other of the hook and the slot is correspondingly disposed on the two mounting portions 30, the two mounting portions 30 are respectively installed in the first mounting groove 4 and the second mounting groove 5 in a clamping manner, and the hook is installed in the slot in a clamping manner. In this kind of scheme, pass through installation department 30 in the both sides of adhesive tape 3 and install the mounting groove that corresponds back, still can carry out further buckle cooperation through trip and draw-in groove between installation department 30 and the mounting groove, just so can improve the block intensity between installation department 30 and the mounting groove, ensure the fixed reliability between adhesive tape 3 and the roof beam body.
Preferably, as shown in fig. 3, a hook is disposed on the mounting groove, and a slot 300 is disposed on the mounting portion 30.
In a specific embodiment (not shown in the figures), both beams are boundary beams, i.e. the rubber strip 3 is directly mounted between the two boundary beams 1, and in this case, the unit type self-slagging telescopic device has only two boundary beams, and no middle beam is arranged between the two boundary beams.
In another embodiment, as shown in fig. 1 and 2, the unit-type self-deslagging telescopic device includes at least three beams parallel to each other and spaced apart from each other, where the at least three beams include two boundary beams 1 and at least one middle beam 2 disposed between the two boundary beams 1, where, in the at least three beams, a first mounting groove 4 and a second mounting groove 5 are respectively disposed on the side surfaces of any two adjacent beams close to each other, and an adhesive tape 3 is disposed between any two adjacent beams, and an installation portion 30 of any adhesive tape 3 is correspondingly snapped into the first mounting groove 4 of the corresponding beam, and another installation portion 30 of any adhesive tape 3 is correspondingly snapped into the second mounting groove 5 of the corresponding beam.
In this embodiment, the unit type self-deslagging telescopic device comprises a plurality of beams, and the rubber strips 3 are mounted among the beams, so that a plurality of units of self-deslagging structures can be formed.
Further preferably, as shown in fig. 1 and 2, the unit type self-slagging telescopic device further comprises: two sliding boxes 6 arranged in parallel and spaced apart from each other; one end of the cross beam 7 is arranged in one sliding box 6, and the other end of the cross beam 7 is arranged in the other sliding box 6; wherein, one boundary beam 1 in at least three beams is installed on the upper end surface of one sliding box 6, another boundary beam 1 in at least three beams is installed on the upper end surface of another sliding box 6, and at least one middle beam 2 in at least three beams is installed on the cross beam 7.
In this embodiment, the slide box 6 is used to support the mounting side rails 1 and cross rails 7, and the cross rails 7 are used to support the mounting center rail 2. This structure provides a deformable space for the edge beam 1 through the slide box 6, while the width of the whole structure is widened by the center beam 2 and the cross beam 7.
Wherein, when the unit formula is from arranging sediment telescoping device and including the at least three roof beam body that is parallel to each other and the interval sets up, all can install one above-mentioned adhesive tape 3 between two roof beam bodies of all adjacent settings, of course, in other schemes, in at least three roof beam body, also can only install one above-mentioned adhesive tape 3 between two roof beam bodies of a set of adjacent settings, and other similar sealing strip structures of mountable between two roof beam bodies of other adjacent settings, and do not necessarily all install above-mentioned same adhesive tape between the roof beam body.
Further preferably, as shown in fig. 1 and 2, two side members 1 are mounted on the upper end surfaces of the two slide cases 6, respectively, by bolts.
In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood in a broad sense, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, the description of the terms "one embodiment," "some embodiments," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a unit formula is from arranging sediment telescoping device which characterized in that includes:
the two beam bodies are parallel to each other and arranged at intervals, and the side surfaces, close to each other, of the two beam bodies are respectively provided with a first mounting groove and a second mounting groove;
the adhesive tape comprises a slag discharging part, two mounting parts are respectively arranged on the two sides of the slag discharging part along the width direction of the beam body, the two mounting parts are respectively clamped and mounted in the first mounting groove and the second mounting groove, the slag discharging part comprises a slag discharging part bottom and a slag discharging part top, the top of the slag discharging part is an arc-shaped structure protruding upwards, the width of the slag discharging part bottom is reduced from top to bottom, an avoiding cavity is arranged on the slag discharging part, two end openings are arranged in the avoiding cavity along the length direction of the beam body, the slag discharging part bottom and the slag discharging part top are integrally formed, and the slag discharging part and the two mounting parts are integrally formed;
when the two beam bodies extrude the adhesive tape at the same time, the bottom and the top of the slag discharging part can deform at the same time, so that the foreign matters falling between the two beam bodies are pushed out of beam seams formed by the two beam bodies.
2. The modular self residual extraction telescoping device of claim 1,
the avoiding cavity is formed by the bottom of the slag discharging part and the top of the slag discharging part in a surrounding mode;
wherein, the width of arranging sediment portion bottom reduces from top to bottom gradually, or the both sides of arranging sediment portion bottom are the arc adduction from top to bottom, it is the arc structure to arrange sediment portion top.
3. The modular self residual extraction telescoping device of claim 1,
the top surface of the avoiding cavity is an arc surface or an arch surface, and/or the side wall surface of the avoiding cavity is an arc surface or an inclined surface which gradually extends inwards from top to bottom.
4. The modular self residual extraction telescoping device of claim 1,
the installation department include with the block portion and the connection of roof beam body cooperation installation arrange sediment portion with connecting portion between the block portion, connecting portion are the bellied arc structure that makes progress.
5. The modular self residual extraction telescoping device of claim 1,
the adhesive tape is a rubber strip or a silica gel strip.
6. The modular self residual extraction telescoping device of claim 1,
first mounting groove with be provided with one in trip and the draw-in groove on the last lateral wall of second mounting groove, two correspond on the installation department and be provided with the trip with another in the draw-in groove, two the installation department card respectively goes into to be installed first mounting groove with in the second mounting groove, the trip card is gone into to install in the draw-in groove.
7. The modular self residual extraction telescopic device according to any one of claims 1 to 6,
and the two beam bodies are boundary beams.
8. The modular self residual extraction telescopic device according to any one of claims 1 to 6,
the unit formula is from arranging at least three roof beam body that sediment telescoping device set up including being parallel to each other and interval, at least three roof beam body includes two boundary beams and sets up at least one well roof beam between two boundary beams, wherein, in the at least three roof beam body, be provided with respectively on the side that arbitrary two adjacent roof beam bodies are close to each other first mounting groove with the second mounting groove, and all be provided with one between arbitrary two adjacent roof beam bodies the adhesive tape, and arbitrary an installation department of adhesive tape all corresponds the card and goes into in its first mounting groove that corresponds the roof beam body, arbitrary another installation department of adhesive tape all corresponds the card and goes into in its second mounting groove that corresponds the roof beam body.
9. The modular self residual extraction telescopic device according to claim 8, further comprising:
two sliding boxes which are parallel to each other and are arranged at intervals;
one end of the cross beam is arranged in one sliding box, and the other end of the cross beam is arranged in the other sliding box;
one boundary beam of the at least three beam bodies is arranged on the upper end face of one sliding box, the other boundary beam of the at least three beam bodies is arranged on the upper end face of the other sliding box, and at least one middle beam of the at least three beam bodies is arranged on the cross beam.
10. The modular self residual extraction telescoping device of claim 9,
the two boundary beams are respectively installed on the upper end surfaces of the two sliding boxes through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020907145.0U CN213086553U (en) | 2020-05-26 | 2020-05-26 | Unit type self-slagging telescopic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020907145.0U CN213086553U (en) | 2020-05-26 | 2020-05-26 | Unit type self-slagging telescopic device |
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| CN213086553U true CN213086553U (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020907145.0U Active CN213086553U (en) | 2020-05-26 | 2020-05-26 | Unit type self-slagging telescopic device |
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