CN216893395U - Multifunctional support - Google Patents

Abstract

The application discloses multifunctional support relates to culvert construction equipment field. Including the operation panel, and two sets of member push-and-pull subassemblies of relative parallel arrangement on the operation panel, member push-and-pull subassembly and operation panel sliding connection, the relative both sides of every group member push-and-pull subassembly are provided with the subassembly that opens and shuts respectively, every group member push-and-pull subassembly can drive two subassemblies that open and shut and be close to or keep away from mutually, the slip direction of member push-and-pull subassembly is mutually perpendicular with the direction of motion of the subassembly that opens and shuts, the subassembly that opens and shuts is used for hoisting the template, still be provided with the top push subassembly on the operation panel, the top push subassembly is used for supporting the cast-in-place apron of culvert, accomplish a multipurpose in the real meaning in the construction to the culvert is holistic, the efficiency of construction of culvert has been improved.

Description

Multifunctional support

Technical Field

The application relates to the field of culvert construction equipment, in particular to a multifunctional support.

Background

In the construction of highway subgrade, the culvert is used as an integral part, the construction speed of the culvert has a very deep influence on the progress of the whole engineering construction, and meanwhile, the quality of the culvert is also greatly influenced on the quality of the whole engineering as an important way for protecting the subgrade.

In the construction of cast-in-place apron of culvert, need hoisting formwork to process the culvert body usually, later build full hall formula support again and process cast-in-place apron of culvert, when constructing different culverts, need carry out the construction requirements of repeated dismouting in order to satisfy different culverts to the support, extravagant a large amount of manpower and materials.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a multifunctional support, it can improve the efficiency of construction.

The embodiment of the application is realized as follows:

the embodiment of the application provides a multifunctional support, including the operation panel, and two sets of member push-and-pull subassemblies of relative parallel arrangement on the operation panel, member push-and-pull subassembly and operation panel sliding connection, the relative both sides of every group member push-and-pull subassembly are provided with the subassembly that opens and shuts respectively, every group member push-and-pull subassembly can drive two subassemblies that open and shut and be close to mutually or keep away from, the slip direction of member push-and-pull subassembly is mutually perpendicular with the direction of motion of the subassembly that opens and shuts, the subassembly that opens and shuts is used for hoisting formwork, still be provided with the top on the operation panel and push away the subassembly, the top pushes away the subassembly and is used for supporting the cast-in-place apron of culvert.

Optionally, the operating console includes a support frame and an operating panel disposed on the support frame, a slide rail is disposed on the operating panel, and the rod pushing and pulling assembly includes a sliding seat corresponding to the slide rail, so that the rod pushing and pulling assembly slides along the slide rail through the sliding seat.

Optionally, the rod pushing and pulling assembly comprises a rotating wheel, and a first sliding plate and a second sliding plate which are in transmission connection with the rotating wheel, the first sliding plate and the second sliding plate can approach to or separate from each other, and the opening and closing assembly is respectively connected with the first sliding plate and the second sliding plate.

Optionally, the rotating wheel is connected with a first gear set, the first sliding plate is provided with a first rack, the second sliding plate is provided with a second rack, and the first gear set comprises transmission gears respectively meshed with the first rack and the second rack so as to enable the first rack and the second rack to move in opposite directions.

Optionally, the opening and closing assembly comprises a fixed rod connected with the first sliding plate and the second sliding plate respectively, two lifting assemblies are oppositely arranged on the fixed rod and connected through a transmission assembly, a driving assembly connected with one of the lifting assemblies is further arranged on the fixed rod and drives the other lifting assembly to synchronously act through the transmission assembly, so that the two lifting assemblies can be close to or far away from each other.

Optionally, the lifting assembly comprises a connecting seat arranged on the fixing rod and a first connecting rod connected with the connecting seat in a rotating mode, the fixing rod is further connected with a second connecting rod in a rotating mode, one end, far away from the fixing rod, of the second connecting rod is connected with the first connecting rod in a rotating mode through a third connecting rod, a fourth connecting rod is connected with the joint of the second connecting rod and the third connecting rod in a rotating mode, the fourth connecting rod is connected with the fixing rod in a sliding mode, the driving assembly is connected with the lifting assembly in a rotating mode through the fourth connecting rod, and a lifting piece is arranged at one end, far away from the connecting seat, of the first connecting rod.

Optionally, the transmission assembly includes two second gear sets disposed oppositely, the second gear set includes a first gear rotating coaxially with the first link relative to the connecting seat, the connecting seat is provided with a supporting arm, the supporting arm is rotatably provided with a second gear engaged with the first gear, and the two second gear sets disposed oppositely are engaged with each other through the two second gears.

Optionally, the driving assembly comprises a fixing sleeve arranged on the fixing rod and a driving rod in threaded connection with the fixing sleeve, the end of the driving rod is rotatably connected with a connecting arm, one end, far away from the driving rod, of the connecting arm is rotatably connected with the fourth connecting rod, and the rotating planes at the two ends of the connecting arm are perpendicular to each other.

Optionally, a plurality of pushing assemblies are arranged on the support frame, each pushing assembly comprises a pushing sleeve and a pushing rod in threaded connection with the pushing sleeve, and a through hole is formed in the operating plate so that the pushing rod can extend out of the through hole.

Optionally, the support frame is provided with a pulley for pushing the multifunctional support to slide.

The beneficial effects of the embodiment of the application include:

the multifunctional support comprises an operation platform and two groups of rod piece push-pull assemblies which are arranged on the operation platform in parallel relatively, wherein the rod piece push-pull assemblies are connected with the operation platform in a sliding mode to adapt to construction of culverts with different depths, the two opposite sides of each group of rod piece push-pull assemblies are respectively provided with an opening-closing assembly, each group of rod piece push-pull assemblies can drive the two opening-closing assemblies to be close to or far away from each other to adapt to construction of culverts with different widths, the sliding direction of the rod piece push-pull assemblies is perpendicular to the moving direction of the opening-closing assemblies, the opening-closing assemblies are used for hoisting templates, a pushing assembly is further arranged on the operation platform and used for supporting culvert cast-in-place cover plates, the culvert bodies are hoisted by the opening-closing assemblies to be cast, after the culvert bodies are cast, the top of the culvert is constructed by supporting the culvert cast-in-place cover plates through the pushing assembly, and the multifunctional support achieves multiple purposes in the construction of the whole culvert in a real sense, the construction efficiency of the culvert is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a multifunctional support provided in an embodiment of the present application;

FIG. 2 is a schematic structural view of a rod pushing and pulling assembly in a multifunctional bracket according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an opening and closing assembly in a multifunctional bracket provided in an embodiment of the present application.

Icon: 100-a multifunctional support; 110-an operation table; 111-a support frame; 1111-pulley; 112-an operation panel; 1121-sliding rail; 1122-through hole; 120-rod push-pull assembly; 121-a sliding seat; 122-a protective shell; 123-a rotating wheel; 124-first gear set; 1241-first connecting gear; 1242-a second connecting gear; 1243-drive gear; 125-a first sliding plate; 1251-first rack; 126-a second sliding plate; 1261-a second rack; 130-an opening and closing assembly; 131-a fixing rod; 1311-a connecting seat; 1312-a support arm; 132-a drive assembly; 1321-a stationary sleeve; 1322-a drive rod; 1322 a-a driving part; 1323-linker arm; 133-a lifting assembly; 1331-a first link; 1331 a-fixed pulley; 1332-a second link; 1333-a third link; 1334-a fourth link; 1335-a lift; 134-a transmission assembly; 1341-a second gear set; 1341 a-first gear; 1341b — a second gear; 140-a pushing assembly; 141-pushing sleeve; 142-a push rod; 1421 — abutment.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1, the present embodiment provides a multifunctional support 100, including an operation table 110, and two sets of rod pushing and pulling assemblies 120 arranged in parallel on the operation table 110, the rod pushing and pulling assemblies 120 are connected to the operation table 110 in a sliding manner, two opposite sides of each set of rod pushing and pulling assemblies 120 are respectively provided with an opening and closing assembly 130, each set of rod pushing and pulling assemblies 120 can drive the two opening and closing assemblies 130 to approach or separate from each other, a sliding direction of the rod pushing and pulling assemblies 120 is perpendicular to a moving direction of the opening and closing assemblies 130, the opening and closing assemblies 130 are used for hoisting a formwork, the operation table 110 is further provided with a pushing assembly 140, and the pushing assembly 140 is used for supporting a culvert cast-in-place cover plate.

Specifically, the rod push-pull assemblies 120 are slidably connected with the operating console 110, so that the culvert construction at different depths can be adapted, each group of rod push-pull assemblies 120 can drive the two opening and closing assemblies 130 to approach or move away from each other, the culvert construction at different widths can be adapted, in the culvert construction process, the multifunctional bracket 100 is erected at a preset position, the relative position between the rod push-pull assembly 120 and the operation table 110 is adjusted, so as to ensure that the space between the two rod push-pull assemblies 120 can adapt to the construction of the prefabricated culvert, adjust the relative distance of the opening and closing assemblies 130 at the two ends of each group of rod push-pull assemblies 120, the interval between two subassembly 130 that open and shut is equivalent with the width of prefabricated culvert with guaranteeing to guarantee that the subassembly 130 position that opens and shuts on two sets of member push-and-pull subassemblies 120 is unanimous, and further, member push-and-pull subassembly 120 can set up to more than two sets of, in order to guarantee to the stability of template hoist and mount in-process.

The multifunctional support 100 provided by the embodiment of the application comprises an operation table 110 and two groups of rod push-pull assemblies 120 which are arranged on the operation table 110 in parallel relatively, wherein the rod push-pull assemblies 120 are connected with the operation table 110 in a sliding manner, the construction of culverts with different depths is adapted by adjusting the relative distance between the two rod push-pull assemblies 120 which are arranged in parallel relatively, the two opposite sides of each group of rod push-pull assemblies 120 are respectively provided with an opening-closing assembly 130, each group of rod push-pull assemblies 120 can drive the two opening-closing assemblies 130 to be close to or away from each other so as to be adapted to the construction of culverts with different widths, the sliding direction of the rod push-pull assemblies 120 is perpendicular to the moving direction of the opening-closing assemblies 130, the opening-closing assemblies 130 are used for hoisting templates, the operation table 110 is also provided with a pushing assembly 140, the pushing assembly 140 is used for supporting cast-in-place cover plates of culverts, the culverts are cast by hoisting the templates through the opening-closing assemblies 130, after the culvert body is poured and is accomplished, support the cast-in-place apron of culvert and come to be under construction the culvert top through pushing away subassembly 140, accomplished a multi-purpose in the construction to the culvert is holistic through multi-functional support 100 in the true sense, improved the efficiency of construction of culvert.

In one possible embodiment of the present application, as shown in fig. 1, the operating platform 110 includes a supporting frame 111 and an operating plate 112 disposed on the supporting frame 111, a sliding rail 1121 is disposed on the operating plate 112, and the rod push-pull assembly 120 includes a sliding seat 121 corresponding to the sliding rail 1121, so that the rod push-pull assembly 120 slides along the sliding rail 1121 through the sliding seat 121.

After the multifunctional support 100 is erected at the preset position, the sliding seat 121 is pushed to move the two rod push-pull assemblies 120 that are arranged oppositely close to or away from each other, so that the distance between the two rod push-pull assemblies 120 can be adapted to the depth of a culvert to be constructed, a plurality of sliding rails 1121 are arranged in parallel, a plurality of sliding seats 121 are correspondingly arranged, and the relative stable arrangement between the rod push-pull assemblies 120 and the operating plate 112 is also ensured.

In one possible embodiment of the present application, as shown in fig. 2, the lever push-pull assembly 120 includes a rotating wheel 123, and a first sliding plate 125 and a second sliding plate 126 in transmission connection with the rotating wheel 123, the first sliding plate 125 and the second sliding plate 126 can be moved toward or away from each other, and the opening and closing assembly 130 is connected with the first sliding plate 125 and the second sliding plate 126, respectively.

Specifically, the multifunctional bracket 100 is disposed at the center of the culvert to be constructed, and the rotating wheel 123 is rotated to make the first sliding plate 125 and the second sliding plate 126 approach or separate synchronously, so that the opening and closing assemblies 130 disposed at both ends of the rod push-pull assembly 120 are always spaced from the center of the culvert. By rotating the rotating wheel 123, the distance between the two opening and closing assemblies 130 is adjusted, so that the center distance between the two opening and closing assemblies 130 at the end parts of the first sliding plate 125 and the second sliding plate 126 is consistent with the width of the culvert to be processed, and the width of the poured culvert is consistent with that in the expected plan.

In one possible embodiment of the present invention, as shown in fig. 2, a first gear set 124 is connected to the rotating wheel 123, a first rack 1251 is provided on the first sliding plate 125, a second rack 1261 is provided on the second sliding plate 126, and the first gear set 124 includes a transmission gear 1243 engaged with the first rack 1251 and the second rack 1261, respectively, so as to move the first rack 1251 and the second rack 1261 in opposite directions.

The first gear set 124 includes a first connecting gear 1241 coaxially connected to the rotary wheel 123, a second connecting gear 1242 engaged with the first connecting gear 1241, and a driving gear 1243 coaxially connected to the second connecting gear 1242, and is driven by a plurality of gear combinations to change a gear ratio so that manual operation is more labor-saving.

Furthermore, a protective shell 122 is sleeved outside the first gear set 124, and the protective shell 122 can prevent stones from flying into the first gear set 124 in complex environments such as a construction site and the like to influence the meshing relationship between gears, so that stable operation of the rod push-pull assembly 120 is ensured.

In one possible embodiment of the present invention, as shown in fig. 3, the opening and closing assembly 130 includes a fixing rod 131 connected to the first sliding plate 125 and the second sliding plate 126, two lifting assemblies 133 are oppositely disposed on the fixing rod 131, the two lifting assemblies 133 are connected by a transmission assembly 134, a driving assembly 132 connected to one of the lifting assemblies 133 is further disposed on the fixing rod 131, and the driving assembly 132 drives the other lifting assembly 133 to synchronously move through the transmission assembly 134, so that the two lifting assemblies 133 can approach or move away from each other.

Two lifting unit 133 of relative setting are used for hanging and establish the template, hang the template after establishing, concreting between two templates of parallel arrangement, after waiting that the concrete setting reaches the intensity requirement, a lifting unit 133 motion that drive assembly 132 drove and is connected with it, lifting unit 133 drives another lifting unit 133 synchronous motion through drive assembly 134, so that two lifting unit 133 of relative setting keep away from mutually, make two templates of parallel arrangement keep away from mutually, make the template orientation deviate from the direction motion of culvert body, in order to guarantee demolising the in-process at the template, the template can not interfere with culvert body, thereby damage the culvert body of pouring the completion.

In one possible embodiment of the present application, as shown in fig. 3, the driving assembly 132 includes a fixing sleeve 1321 disposed on the fixing rod 131, and a driving rod 1322 threadedly coupled to the fixing sleeve 1321, wherein a connecting arm 1323 is rotatably coupled to an end of the driving rod 1322, an end of the connecting arm 1323 away from the driving rod 1322 is rotatably coupled to a fourth connecting rod 1334, and a rotation plane of both ends of the connecting arm 1323 is perpendicular to each other.

The lifting assembly 133 comprises a connecting seat 1311 arranged on the fixing rod 131 and a first connecting rod 1331 rotatably connected with the connecting seat 1311, a second connecting rod 1332 is further rotatably connected on the fixing rod 131, one end, far away from the fixing rod 131, of the second connecting rod 1332 is rotatably connected with the first connecting rod 1331 through a third connecting rod 1333, a fourth connecting rod 1334 is rotatably connected at the joint of the second connecting rod 1332 and the third connecting rod 1333, the fourth connecting rod 1334 is slidably connected with the fixing rod 131, the driving assembly 132 is rotatably connected with the lifting assembly 133 through the fourth connecting rod 1334, and a lifting piece 1335 is arranged at one end, far away from the connecting seat 1311, of the first connecting rod 1331.

The transmission assembly 134 includes two second gear sets 1341 disposed oppositely, the second gear set 1341 includes a first gear 1341a coaxially rotating with the first connecting rod 1331 relative to the connecting seat 1311, a supporting arm 1312 is disposed on the connecting seat 1311, a second gear 1341b engaged with the first gear 1341a is rotatably disposed on the supporting arm 1312, and the two second gear sets 1341 disposed oppositely are engaged with each other through the two second gears 1341 b.

When the template hung on the lifting piece 1335 needs to be separated from the culvert body, the driving part 1322a of the driving rod 1322 is held by hand, the driving rod 1322 is rotated to make the driving rod 1322 move towards the connecting arm 1323, the connecting arm 1323 is driven to synchronously move, the connecting arm 1323 drives the fourth connecting rod 1334 to slide towards the transmission component 134, the second connection rod 1332 and the third connection rod 1333, which are rotatably connected to the fourth connection rod 1334, rotate a certain angle, drive the first connection rod 1331 to swing a certain angle towards the second connection rod 1332, the first gear 1341a coaxially connected to the first link 1331 rotates a certain angle to drive the second gear 1341b engaged therewith to rotate a certain angle, and the other gear set rotates along with it, so that the other first connecting rod 1331 swings at a certain angle towards the other second connecting rod 1332 to separate the formworks hung on the two oppositely arranged lifting pieces 1335 from the culvert body. The fixing rod 131 is provided with a slide rail 1121, so that the fourth connecting rod 1334 can be slidably connected with the fixing rod 131.

The transmission assembly 134 is integrally arranged in a triangular shape, and when the lifting piece 1335 lifts the template, the transmission assembly 134 can stably support the lifting piece 1335 so as to ensure the stability of the lifting piece 1335 in the lifting process. Wherein, the one end of first connecting rod 1331 far away from connecting seat 1311 is provided with fixed pulley 1331a, and lifting member 1335 hangs on fixed pulley 1331a, and lifting member 1335 can set up as chain block to hoist the template.

In one possible embodiment of the present disclosure, as shown in fig. 1, a plurality of pushing assemblies 140 are disposed on the supporting frame 111, each pushing assembly 140 includes a pushing sleeve 141 and a pushing rod 142 screwed to the pushing sleeve 141, and a through hole 1122 is disposed on the operating plate 112 so that the pushing rod 142 can extend from the through hole 1122.

After the construction of the culvert body is completed, the rotating wheel 123 is rotated to enable the opening and closing assemblies 130 arranged at the two ends of the rod pushing and pulling assembly 120 to be close to each other, so that the multifunctional support 100 is stored in the culvert, the pushing rod 142 is rotated to enable the pushing rod 142 to penetrate through the through hole 1122 until the abutting part 1421 abuts against the culvert cast-in-place cover plate, and the culvert cast-in-place cover plate is stably supported by the pushing assembly 140.

In one possible embodiment of the present application, as shown in fig. 1, a pulley 1111 is disposed on the supporting frame 111 for pushing the multifunctional bracket 100 to slide.

Specifically, pulley 1111 demountable installation is on the support, at culvert body template form removal and during operation, can demolish pulley 1111 to guarantee operation panel 110's stable support, after the construction, install pulley 1111 on operation panel 110, so that remove the operation to multi-functional support 100.

The multifunctional support 100 provided by the application really achieves multiple purposes in the overall construction of the culvert, and improves the construction efficiency of the culvert.

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 multifunctional support is characterized by comprising an operation table and two groups of rod piece push-pull assemblies which are arranged on the operation table in a relatively parallel mode, wherein the rod piece push-pull assemblies are connected with the operation table in a sliding mode, the two opposite sides of each group of rod piece push-pull assemblies are respectively provided with an opening and closing assembly, each group of rod piece push-pull assemblies can drive the two opening and closing assemblies to be close to or far away from each other, the sliding direction of the rod piece push-pull assemblies is perpendicular to the moving direction of the opening and closing assemblies, the opening and closing assemblies are used for hoisting templates, a pushing assembly is further arranged on the operation table and used for supporting a culvert cast-in-place cover plate.

2. The multifunctional support according to claim 1, wherein the console comprises a support frame and a console panel disposed on the support frame, the console panel is disposed with a slide rail, and the rod push-pull assembly comprises a sliding seat corresponding to the slide rail, so that the rod push-pull assembly slides along the slide rail through the sliding seat.

3. The multi-function bracket according to claim 1, wherein the rod push-pull assembly comprises a rotating wheel, and a first sliding plate and a second sliding plate drivingly connected to the rotating wheel, the first sliding plate and the second sliding plate being capable of moving toward and away from each other, and the opening and closing assembly is connected to the first sliding plate and the second sliding plate, respectively.

4. The multi-function support according to claim 3, wherein a first gear set is connected to the rotating wheel, a first rack is provided on the first sliding plate, a second rack is provided on the second sliding plate, and the first gear set includes a transmission gear engaged with the first rack and the second rack, respectively, so that the first rack and the second rack move in opposite directions.

5. The multifunctional support according to claim 3, wherein the opening and closing assembly comprises a fixed rod connected to the first sliding plate and the second sliding plate, two lifting assemblies are oppositely disposed on the fixed rod, the two lifting assemblies are connected through a transmission assembly, a driving assembly connected to one of the lifting assemblies is further disposed on the fixed rod, and the driving assembly drives the other lifting assembly to move synchronously through the transmission assembly, so that the two lifting assemblies can move closer to or away from each other.

6. The multifunctional support according to claim 5, wherein the lifting assembly comprises a connecting seat disposed on a fixed rod, and a first connecting rod rotatably connected to the connecting seat, a second connecting rod is further rotatably connected to the fixed rod, an end of the second connecting rod remote from the fixed rod is rotatably connected to the first connecting rod through a third connecting rod, a fourth connecting rod is rotatably connected to a joint of the second connecting rod and the third connecting rod, the fourth connecting rod is slidably connected to the fixed rod, the driving assembly is rotatably connected to the lifting assembly through the fourth connecting rod, and an end of the first connecting rod remote from the connecting seat is provided with a lifting member.

7. The multifunctional support according to claim 6, wherein the transmission assembly comprises two second gear sets disposed oppositely, the second gear set comprises a first gear rotating coaxially with the first link relative to the connecting seat, a supporting arm is disposed on the connecting seat, a second gear meshing with the first gear is rotatably disposed on the supporting arm, and the two second gear sets disposed oppositely are meshed through the two second gears.

8. The multifunctional support according to claim 6, wherein the driving assembly comprises a fixing sleeve disposed on the fixing rod, and a driving rod in threaded connection with the fixing sleeve, a connecting arm is rotatably connected to an end of the driving rod, an end of the connecting arm remote from the driving rod is rotatably connected to the fourth connecting rod, and a rotation plane of two ends of the connecting arm is perpendicular to each other.

9. The multifunctional bracket according to claim 2, wherein a plurality of said pushing assemblies are disposed on said supporting bracket, said pushing assemblies comprise pushing sleeves and pushing rods in threaded connection with said pushing sleeves, and said operating plate is provided with through holes so that said pushing rods can extend out of said through holes.

10. The multifunctional support according to claim 2, wherein the support frame is provided with a pulley for pushing the multifunctional support to slide.

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