CN117230995A

CN117230995A - Building construction switchable mode's equipment of vibrating

Info

Publication number: CN117230995A
Application number: CN202311305132.0A
Authority: CN
Inventors: 王文海
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-10-10
Filing date: 2023-10-10
Publication date: 2023-12-15

Abstract

The invention relates to the technical field of building construction, in particular to vibrating equipment with a switchable mode in building construction. According to the invention, the motor can drive the gear II to rotate, the gear II drives the hollow pipe and the upper bevel gear ring to rotate through the limiting groove and the limiting block, and the upper bevel gear ring can move up and down under the action of the lower bevel gear ring, so that the vibrating rod can vibrate up and down while rotating, the vibrating range is larger, and the vibrating effect is better; under the deeper condition of concrete, can stretch out the slide bar, guarantee the effect of vibrating, under the shallower condition of concrete, can retract the slide bar, avoid the slide bar to touch the bottom of concrete container, can switch two kinds of modes according to actual conditions to adapt to different degree of depth concretes.

Description

Building construction switchable mode's equipment of vibrating

Technical Field

The invention relates to the technical field of building construction, in particular to vibrating equipment with a switchable mode in building construction.

Background

In the construction process of the building, the concrete is a common cementing material, so that the stability of the building can be improved, the concrete needs to be vibrated, bubbles in the concrete are eliminated, the quality of the concrete member is ensured, and the strength of the concrete member is improved.

The utility model discloses a CN112160604 a's patent discloses an improved generation concrete vibrating device for construction, including vibrating the pole and removing the spliced pole, vibrating the pole and removing the spliced pole and rotate through rotary connection and be connected, and remove the spliced pole activity and peg graft on the bottom plate of supporting box, the upper end of removing the spliced pole is connected on the lower terminal surface of No. two bearing plates, and fixed setting is on ring gear's lower extreme on No. two bearing plates's the up end, ring gear's upper end fixedly connected with direction subassembly's one end.

Above-mentioned patent can make the vibrating rod circulate in the vertical direction through driving the motor and vibrate, vibrates the pole for vertical setting, and the vibrating rod can only carry out the vibrations of upper and lower direction, and the vibration scope is less, and the vibration effect is not enough.

Disclosure of Invention

In order to overcome the defects that the vibrating rod is vertically arranged, the vibrating rod can vibrate in the up-down direction, the vibrating range is small, and the vibrating effect is not good enough, the invention provides the vibrating equipment with the changeable mode for building construction, which has the advantages of larger vibrating range and better vibrating effect.

The technical scheme of the invention is as follows: the utility model provides a construction switchable mode's equipment of vibrating, including the mounting disc, the supporting disk, the hollow tube, the solid fixed ring, the slip ring, the slide bar, the connecting cloth, the pole of vibrating, down the inclined tooth ring, go up the inclined tooth ring, block subassembly and actuating unit, the mounting disc bottom is connected with the supporting disk, the hollow tube is connected with in the middle part rotation of mounting disc, and the hollow tube can slide from top to bottom, be connected with the solid fixed ring on the hollow tube, the slip is equipped with a plurality of slip rings on the hollow tube, the slip ring is located the below of solid fixed ring, the slip type is equipped with the slide bar in the hollow tube, connect through the connecting cloth between two adjacent slip rings, connect through the connecting cloth between fixed ring and the slip ring of top, connect through the connecting cloth between slide bar and the slip ring of below, all be connected with the many poles of vibrating that are used for vibrating the concrete on fixed ring, be connected with the inclined tooth ring on the hollow tube, go up inclined tooth ring and lower inclined tooth ring meshing, be equipped with the drive unit that is used for blocking the slide bar on the hollow tube, be equipped with on the mounting disc and block the actuating unit that is used for driving the hollow tube.

As a preferable technical scheme of the invention, the clamping assembly comprises a limiting ring, a guide rod, a sliding block, an elastic piece I, a wedge-shaped block and a connecting ring, wherein the connecting ring is rotationally connected to the hollow pipe, the limiting ring is arranged on the hollow pipe in a sliding mode, the limiting ring is connected with the upper portion of the sliding rod, the guide rod is connected to the connecting ring, the sliding block is arranged on the guide rod in a sliding mode, the elastic piece I is connected between the guide rod and the sliding block, and the wedge-shaped block used for clamping the limiting ring is connected to the sliding block.

As a preferable technical scheme of the invention, the driving assembly comprises a motor, a first gear, a connecting frame and a second gear, wherein the motor is connected to the mounting plate, the first gear is connected to the output shaft of the motor, the connecting frame is connected to the mounting plate, the second gear is rotatably connected to the connecting frame, the second gear is meshed with the first gear, and the hollow tube is connected with the second gear in a sliding manner.

As a preferable technical scheme of the invention, the vibrating rod also comprises an extension mechanism, wherein the extension mechanism comprises an extension rod and an elastic piece II, the extension rod is arranged in the vibrating rod in a sliding manner, and the elastic piece II is connected between the extension rod and the vibrating rod.

As a preferable technical scheme of the invention, the invention further comprises an extrusion mechanism, wherein the extrusion mechanism comprises a holding rod and an elastic piece III, the holding rod is arranged at the upper end of the hollow tube in a sliding manner, the holding rod is connected with the sliding rod, and the elastic piece III is connected between the hollow tube and the sliding rod.

As a preferred technical scheme of the invention, the invention further comprises a supporting mechanism, wherein the supporting mechanism comprises a guide frame, a sliding plate, an elastic piece IV and a supporting plate, the two sides of the installation plate are connected with the guide frame, the guide frame is connected with the supporting plate, the sliding plate is arranged in the guide frame in a sliding manner, the elastic piece IV is connected between the sliding plate and the guide frame, and the bottom of the sliding plate is connected with the supporting plate.

As a preferable technical scheme of the invention, the concrete isolation device further comprises a corrugated pipe, wherein the corrugated pipe is connected between the vibrating rod and the extension rod and is used for isolating concrete.

As a preferable technical scheme of the invention, the invention further comprises a handle, and the two sides of the mounting plate are connected with the handle.

As a preferable technical scheme of the invention, the invention further comprises a connecting rod and a return block, wherein the connecting rod is connected to one supporting plate, the return block for pulling the sliding block is connected to the connecting rod, and the sliding block is positioned in the return block.

As a preferable technical scheme of the invention, the first elastic piece, the second elastic piece, the third elastic piece and the fourth elastic piece are springs.

The invention has the beneficial effects that: 1. according to the invention, the motor can drive the gear II to rotate, the gear II drives the hollow pipe and the upper bevel gear ring to rotate through the limiting groove and the limiting block, and the upper bevel gear ring can move up and down under the action of the lower bevel gear ring, so that the vibrating rod can vibrate up and down while rotating, the vibrating range is larger, and the vibrating effect is better.

2. Under the deeper condition of concrete, can stretch out the slide bar, guarantee the effect of vibrating, under the shallower condition of concrete, can retract the slide bar, avoid the slide bar to touch the bottom of concrete container, can switch two kinds of modes according to actual conditions to adapt to different degree of depth concretes.

3. When the vibrating rod rotates, the extending rod can be thrown out, the length of the vibrating rod can be increased, the vibrating range is increased, and the vibrating effect can be improved.

4. When the wedge block loosens the limiting ring, the sliding rod can be extruded under the action of the elastic piece III, so that the sliding rod moves downwards more smoothly, and the clamping of the sliding rod is avoided.

5. The vibrating rod is inserted into concrete, the supporting plate can be in contact with a concrete container, the bottom of the supporting plate is an inclined plane, the supporting plate can be automatically and outwards spread, so that the vibrating rod can adapt to the concrete containers with different sizes, and the supporting plate can move rightwards by pulling the wedge block through the connecting rod and the return block, so that the limiting ring is automatically loosened, and the vibrating rod is more convenient to use.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of a partial perspective structure of the present invention.

Fig. 3 is a schematic perspective view of a first embodiment of the chuck assembly of the present invention.

Fig. 4 is a schematic view showing a second perspective structure of the chucking assembly of the present invention.

Fig. 5 is a cross-sectional view of a hollow tube of the present invention.

Fig. 6 is a schematic perspective view of a driving assembly according to the present invention.

Fig. 7 is a schematic perspective view of a limiting groove and a limiting block according to the present invention.

Fig. 8 is a schematic view of a first perspective structure of the extension mechanism of the present invention.

Fig. 9 is a schematic view of a second perspective structure of the extension mechanism of the present invention.

Fig. 10 is a schematic perspective view of the pressing mechanism of the present invention.

Fig. 11 is a schematic perspective view of a first embodiment of the supporting mechanism of the present invention.

Fig. 12 is a schematic view of a second perspective structure of the supporting mechanism of the present invention.

Fig. 13 is a schematic perspective view of a connecting rod according to the present invention.

Fig. 14 is a schematic perspective view of the connecting rod and the loop-shaped block of the present invention.

Marked in the figure as: 1 mounting plate, 2 support plate, 3 hollow tube, 4 fixed ring, 5 sliding ring, 6 sliding rod, 7 connecting cloth, 8 vibrating rod, 9 lower helical gear ring, 10 upper helical gear ring, 111 limiting ring, 112 guide rod, 113 slider, 114 elastic member one, 115 wedge block, 116 connecting ring, 121 motor, 122 gear one, 123 connecting frame, 124 gear two, 13 extending mechanism, 131 extending rod, 132 elastic member two, 14 extruding mechanism, 141 holding rod, 142 elastic member three, 15 supporting mechanism, 151 guide frame, 152 sliding plate, 153 elastic member four, 154 supporting plate, 16 corrugated pipe, 17 handle, 18 connecting rod, 19 square block.

Detailed Description

The invention is further described below with reference to the drawings and examples.

Embodiment 1: referring to fig. 1-7, a vibrating device with switchable modes for building construction comprises a mounting plate 1, a supporting plate 2, a hollow tube 3, a fixed ring 4, a sliding ring 5, a sliding rod 6, a connecting cloth 7, a vibrating rod 8, a lower helical gear ring 9, an upper helical gear ring 10, a clamping component and a driving component, wherein the bottom of the mounting plate 1 is connected with the supporting plate 2 through bolts, the supporting plate 2 can be supported at the edge of a concrete container, the middle part of the mounting plate 1 is rotatably connected with the hollow tube 3, the hollow tube 3 can slide up and down, the upper part of the outer side of the hollow tube 3 is connected with the fixed ring 4, four sliding rings 5 are uniformly arranged on the outer side of the hollow tube 3 at intervals in a sliding manner, the sliding rings 5 can slide up and down, the four sliding rings 5 are all positioned below the fixed ring 4, the sliding rod 6 is arranged in the hollow tube 3 in a sliding manner, the sliding rod 6 can slide up and down, the bottoms of the fixed ring 4 and the sliding ring 5 are connected with a connecting cloth 7, the bottom of the connecting cloth 7 on the fixed ring 4 is connected with the top of the uppermost sliding ring 5, the bottom end of the connecting cloth 7 on the lowermost sliding ring 5 is connected with the lower part of the sliding rod 6, a plurality of vibrating rods 8 are uniformly and alternately connected on the outer sides of the fixed ring 4, the sliding ring 5 and the sliding rod 6, the vibrating rods 8 are used for vibrating concrete, a lower bevel gear ring 9 is connected in the middle of the top of the mounting plate 1 through bolts, an upper bevel gear ring 10 is connected on the upper part of the outer side of the hollow tube 3, the upper bevel gear ring 10 is meshed with the lower bevel gear ring 9, the hollow tube 3 can drive the upper bevel gear ring 10 to rotate, under the action of the lower bevel gear ring 9, the upper bevel gear ring 10 can move up and down, thereby the hollow tube 3 can be enabled to move up and down, a clamping component is arranged on the hollow tube 3, the clamping component is used for clamping the sliding rod 6, a driving component is arranged on the top of the mounting plate 1, the driving assembly is used for driving the hollow tube 3 to rotate.

Referring to fig. 3, 4 and 5, the clamping assembly comprises a limiting ring 111, a guide rod 112, a guide rod 113, an elastic piece 114, a wedge block 115 and a connecting ring 116, wherein the upper part of the outer side of the hollow tube 3 is rotatably connected with the connecting ring 116, the limiting ring 111 is sleeved on the hollow tube 3, the left side and the right side of the upper part of the hollow tube 3 are provided with strip-shaped openings, the limiting ring 111 can slide up and down in the strip-shaped openings, the limiting ring 111 is connected with the upper part of the sliding rod 6, the guide rod 112 is connected with the upper part of the right side of the connecting ring 116, the guide rod 112 is provided with the slide block 113 in a sliding manner, the slide block 113 can slide left and right, the outer side of the guide rod 112 is sleeved with the elastic piece 114, one end of the elastic piece 114 is connected with the guide rod 112, the other end of the elastic piece 114 is connected with the slide block 113, the bottom of the slide block 113 is provided with the wedge block 115 through a bolt, and the wedge block 115 is used for clamping the limiting ring 111.

Referring to fig. 6 and 7, the driving assembly comprises a motor 121, a first gear 122, a connecting frame 123 and a second gear 124, wherein the rear side of the top of the installation plate 1 is connected with the motor 121 through a bolt, the output shaft of the motor 121 is connected with the first gear 122 through a key, the middle of the top of the installation plate 1 is connected with the connecting frame 123 through a bolt, the top of the connecting frame 123 is rotationally connected with the second gear 124, the second gear 124 is meshed with the first gear 122, the hollow pipe 3 is positioned in the second gear 124, the front side and the rear side of the second gear 124 are respectively provided with a limiting groove, the front side and the rear side of the upper part of the hollow pipe 3 are respectively connected with a limiting block, the limiting blocks are positioned in the limiting grooves, the limiting blocks can slide up and down in the limiting grooves, and the second gear 124 can drive the hollow pipe 3 to rotate through the limiting grooves and the limiting blocks.

Referring to fig. 1, the concrete vibrator further comprises a handle 17, the handle 17 is connected to the left side and the right side of the mounting plate 1 through bolts, and the vibrating rod 8 can be inserted into the concrete by holding the handle 17.

The constructor holds the handle 17 to insert the vibrating rod 8 into the concrete, the supporting disk 2 is supported at the edge of the concrete container, then the motor 121 is started to drive the gear one 122 to rotate, thereby driving the gear two 124 to rotate, the gear two 124 drives the hollow pipe 3 to rotate through the limiting groove and the limiting block, the hollow pipe 3 drives the upper inclined toothed ring 10 to rotate, under the action of the lower inclined toothed ring 9, the upper inclined toothed ring 10 moves up and down, thereby enabling the hollow pipe 3 to move up and down, the vibrating rod 8 can vibrate up and down while rotating, the vibrating range is larger, the vibrating effect is better, if the concrete is deeper, the constructor can pull the sliding block 113 rightwards, the elastic piece one 114 stretches, the sliding block 113 drives the wedge block 115 to move rightwards, the limiting ring 111 is loosened, thereby loosening the sliding rod 6, the sliding rod 6 moves downwards under the action of gravity of the constructor, the vibrating rod 8 moves downwards, so that concrete at a deeper position can be vibrated, the connecting cloth 7 is unfolded, the sliding block 113 is loosened, under the action of the first elastic piece 114, the sliding block 113 and the wedge block 115 move leftwards and reset, the sliding rod 6 is pushed upwards, the limiting ring 111 can be driven to move upwards, when the limiting ring 111 moves upwards and contacts the wedge block 115, under the action of the first elastic piece 114, the limiting ring 111 can pass through the wedge block 115, and then the wedge block 115 clamps the limiting ring 111, so that two modes can be switched according to actual conditions, different-depth concrete can be adapted, under the condition that the concrete is deeper, the sliding rod 6 is stretched out, the vibrating effect is guaranteed, under the condition that the concrete is shallower, the sliding rod 6 is retracted, and the sliding rod 6 is prevented from touching the bottom of a concrete container.

Embodiment 2: on the basis of the embodiment 1, referring to fig. 1, 8 and 9, the vibrating rod further comprises an extension mechanism 13, the extension mechanism 13 comprises an extension rod 131 and a second elastic element 132, guide grooves are formed in the vibrating rod 8, the extension rod 131 is slidably arranged in the guide grooves, the extension rod 131 can increase the length of the vibrating rod 8, a second elastic element 132 is connected between the extension rod 131 and the vibrating rod 8, the second elastic element 132 is located in the guide grooves, and the second elastic element 132 is a spring.

Referring to fig. 8, the vibration rod 8 further comprises a corrugated pipe 16, the corrugated pipe 16 is connected to the outer side of the vibration rod 8, the extension rod 131 is connected with the inner wall of the corrugated pipe 16, and the corrugated pipe 16 is used for isolating concrete 131.

When the vibrating rod 8 rotates, under the action of centrifugal force, the extension rod 131 can be thrown out, the elastic component II 132 stretches, the corrugated pipe 16 can protect the extension rod 131, concrete is prevented from entering a gap between the vibrating rod 8 and the extension rod 131, clamping is prevented from being caused when the extension rod 131 stretches out, the length of the vibrating rod 8 can be increased by the extension rod 131, the vibrating range is improved, and accordingly the vibrating effect can be improved.

Referring to fig. 1 and 10, the device further comprises an extrusion mechanism 14, the extrusion mechanism 14 comprises a holding rod 141 and an elastic member three 142, the holding rod 141 is slidably arranged at the upper end of the hollow tube 3, the lower end of the holding rod 141 is connected with the upper end of the sliding rod 6, the holding rod 141 can slide up and down, the holding rod 141 is in a T shape, the elastic member three 142 is sleeved outside the holding rod 141, one end of the elastic member three 142 is connected with the hollow tube 3, the other end of the elastic member three 142 is connected with the sliding rod 6, the elastic member three 142 is a spring, the elastic member three 142 is positioned in the hollow tube 3, and the elastic member three 142 is used for extruding the sliding rod 6.

Initially, the wedge block 115 blocks the limiting ring 111, the elastic piece three 142 is in a compressed state, and when the wedge block 115 loosens the limiting ring 111, the elastic piece three 142 can squeeze the sliding rod 6, so that the sliding rod 6 moves downwards more smoothly, the sliding rod 6 is prevented from being blocked, a constructor can pull the sliding rod 6 to move upwards through the holding rod 141, and the sliding rod 6 is retracted.

Referring to fig. 1, 11 and 12, the device further comprises a supporting mechanism 15, the supporting mechanism 15 comprises a guide frame 151, a sliding plate 152, four elastic pieces 153 and a supporting plate 154, the left side and the right side of the installation plate 1 are all connected with the guide frame 151 through bolts, the bottom of the guide frame 151 is connected with the top of the supporting plate 2 through bolts, the sliding plate 152 is arranged in the guide frame 151 in a sliding mode, two four elastic pieces 153 are connected between the sliding plate 152 and the guide frame 151, the four elastic pieces 153 are located in the guide frame 151, the four elastic pieces 153 are springs, the bottom of the sliding plate 152 is connected with the supporting plate 154 through bolts, and the bottom of the supporting plate 154 is an inclined plane.

Referring to fig. 13 and 14, the left side of the right supporting plate 154 is connected with the connecting rod 18 through bolts, the left end of the connecting rod 18 is connected with the square block 19, the sliding block 113 is positioned in the square block 19, and the square block 19 is used for pulling the sliding block 113 to move rightwards.

The construction worker inserts vibrating rod 8 into the concrete, support plate 2 supports at the edge of concrete container, if the concrete container is great, backup pad 154 can be with concrete container contact, the backup pad 154 bottom is the inclined plane for backup pad 154 can automatic outwards strut, elastic component four 153 stretches, so alright adaptation not unidimensional concrete container, simultaneously, the backup pad 154 on right side moves rightwards and can drive connecting rod 18 and return shape piece 19 to move rightwards, return shape piece 19 pulls slider 113 to move rightwards, thereby drive wedge 115 to move rightwards, automatic loosen spacing ring 111, it is more convenient to use.

While the invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.

Claims

1. The utility model provides a construction switchable mode's vibration equipment, including mounting plate (1) and supporting disk (2), mounting plate (1) bottom is connected with supporting disk (2), characterized by, still including hollow tube (3), solid fixed ring (4), sliding ring (5), slide bar (6), connecting cloth (7), vibrating rod (8), down skewed tooth ring (9), go up skewed tooth ring (10), block subassembly and actuating unit, mounting plate (1) middle part rotation is connected with hollow tube (3), and hollow tube (3) can slide from top to bottom, be connected with solid fixed ring (4) on hollow tube (3), sliding on hollow tube (3) is equipped with a plurality of sliding rings (5), sliding ring (5) are located the below of solid fixed ring (4), sliding rod (6) are equipped with in hollow tube (3), connect through connecting cloth (7) between two adjacent sliding rings (5), connect through connecting cloth (7) between solid fixed ring (4) and the top sliding ring (5), connect through solid fixed ring (7) and the sliding rod (5) between the sliding ring (6) and the most down sliding ring (5) and be used for carrying out the equal connection of concrete on vibrating rod (6), the mounting disc (1) is connected with a lower helical gear ring (9), the hollow tube (3) is connected with an upper helical gear ring (10), the upper helical gear ring (10) is meshed with the lower helical gear ring (9), the hollow tube (3) is provided with a clamping component for clamping the sliding rod (6), and the mounting disc (1) is provided with a driving component for driving the hollow tube (3) to rotate.

2. The vibrating device with the switchable mode for building construction according to claim 1, wherein the clamping assembly comprises a limiting ring (111), a guide rod (112), a sliding block (113), an elastic piece I (114), a wedge block (115) and a connecting ring (116), the connecting ring (116) is rotationally connected on the hollow tube (3), the limiting ring (111) is slidably arranged on the hollow tube (3), the limiting ring (111) is connected with the upper portion of the sliding rod (6), the guide rod (112) is connected on the connecting ring (116), the sliding block (113) is slidably arranged on the guide rod (112), the elastic piece I (114) is connected between the guide rod (112) and the sliding block (113), and the wedge block (115) for clamping the limiting ring (111) is connected on the sliding block (113).

3. A vibrating device in a switchable mode for building construction according to claim 2, characterized in that the driving assembly comprises a motor (121), a first gear (122), a connecting frame (123) and a second gear (124), the motor (121) is connected to the mounting plate (1), the first gear (122) is connected to the output shaft of the motor (121), the connecting frame (123) is connected to the mounting plate (1), the second gear (124) is rotatably connected to the connecting frame (123), the second gear (124) is meshed with the first gear (122), and the hollow tube (3) is slidably connected with the second gear (124).

4. A vibrating device in a switchable mode for building construction according to claim 3, further comprising an extension mechanism (13), wherein the extension mechanism (13) comprises an extension rod (131) and a second elastic member (132), the extension rods (131) are slidably arranged in the vibrating rods (8), and the second elastic member (132) is connected between the extension rods (131) and the vibrating rods (8).

5. The vibrating device with the switchable mode for the building construction according to claim 4, further comprising a squeezing mechanism (14), wherein the squeezing mechanism (14) comprises a holding rod (141) and a third elastic element (142), the holding rod (141) is slidably arranged at the upper end of the hollow tube (3), the holding rod (141) is connected with the sliding rod (6), and the third elastic element (142) is connected between the hollow tube (3) and the sliding rod (6).

6. The vibrating device with the switchable mode for building construction according to claim 5, further comprising a supporting mechanism (15), wherein the supporting mechanism (15) comprises a guide frame (151), a sliding plate (152), four elastic pieces (153) and a supporting plate (154), the two sides of the installation plate (1) are connected with the guide frame (151), the guide frame (151) is connected with the supporting plate (2), sliding plates (152) are arranged in the guide frame (151) in a sliding mode, the four elastic pieces (153) are connected between the sliding plates (152) and the guide frame (151), and the bottoms of the sliding plates (152) are connected with the supporting plate (154).

7. A switchable mode vibrating device for building construction according to claim 4, further comprising a bellows (16), the bellows (16) being connected between the vibrating rod (8) and the extension rod (131), the bellows (16) being arranged to insulate the concrete (131).

8. A vibrating device in a switchable mode for building construction according to claim 1, characterized in that it further comprises handles (17), the handles (17) being connected to both sides of the mounting plate (1).

9. The vibrating equipment with the switchable mode for building construction according to claim 6, further comprising a connecting rod (18) and a square block (19), wherein the connecting rod (18) is connected to one supporting plate (154), the square block (19) for pulling the sliding block (113) is connected to the connecting rod (18), and the sliding block (113) is located in the square block (19).

10. The switchable mode vibration apparatus of claim 6 wherein the first elastic member (114), the second elastic member (132), the third elastic member (142) and the fourth elastic member (153) are springs.