CN219746025U - Roof punching device - Google Patents

Abstract

The utility model provides a ceiling punching device, which comprises: the device comprises a support frame, a driving mechanism, a punching mechanism and a pushing piece; the pushing piece is vertical and is arranged below the position to be punched; the punching mechanism is detachably and adjustably arranged on the pushing piece in position; the driving mechanism is arranged on the supporting frame and detachably connected with the pushing piece to drive the pushing piece to move upwards, and further drive the punching mechanism to move upwards, so that the punching mechanism punches a hole on the piece to be punched. According to the utility model, the driving mechanism drives the pushing piece to move upwards to drive the mechanism to be punched to move upwards, so that the mechanism to be punched can punch the piece to be punched, the position of the punching mechanism on the pushing piece can be adjusted, the integral height of the pushing piece and the punching mechanism can be adjusted, the stable punching of the piece to be punched by the mechanism to be punched is ensured, when the piece to be punched needs to be punched, the whole device can be driven to move to the required punching position only by moving the supporting frame, the operation is convenient, and the safety risk of high-altitude operation is reduced.

Description

Roof punching device

Technical Field

The utility model relates to the technical field of punching, in particular to a ceiling punching device.

Background

In the fields of industrial buildings, commercial buildings, civil building garages and the like, the floor height is relatively high, and a ceiling pipeline and a bridge bracket are punched, so that a door type scaffold or an overhead working platform is required to be erected. However, the door type scaffold needs to be continuously disassembled and installed, which is time-consuming and labor-consuming; the high-altitude operation platform has high lease cost, and both the high-altitude operation platform and the high-altitude operation platform need personnel, so that safety risks exist.

Disclosure of Invention

In view of the above, the utility model provides a roof punching device, which aims to solve the problems that the installation is inconvenient and the overhead operation has safety risks in the prior art when the roof is punched.

The utility model provides a ceiling punching device, which comprises: the device comprises a support frame, a driving mechanism, a punching mechanism and a pushing piece; the pushing piece is vertical and is arranged below a position to be punched on the piece to be punched; the punching mechanism is detachably and adjustably arranged on the pushing piece in position; the driving mechanism is arranged on the supporting frame and detachably connected with the pushing piece and used for driving the pushing piece to move upwards and further driving the punching mechanism to move upwards so that the punching mechanism can punch the piece to be punched.

Further, in the ceiling punching device, the pushing member is cylindrical and hollow, the first end of the pushing member is detachably connected with the driving mechanism, and the second end of the pushing member is detachably and adjustably connected with the punching mechanism.

Further, in the ceiling punching device, the punching mechanism includes: punching device, connecting rod and locking component; wherein, the punching device is detachably arranged at the first end of the connecting rod; the second end of the connecting rod is movably inserted into the pushing piece; the locking component is arranged on the pushing piece and used for locking the connecting rod when the second end of the connecting rod is inserted into the pushing piece to a preset depth.

Further, in the above-mentioned ceiling perforating device, the locking subassembly includes: a lock bolt and a lock nut; wherein, the second end of connecting rod has seted up multiunit first mounting hole along its length direction interval, all includes in every group: the two first mounting holes in each group are oppositely arranged and are all arranged at the same section of the connecting rod; the second end of pushing piece has seted up multiunit second mounting hole along its length direction interval, all includes in every group: the two second mounting holes in each group are oppositely arranged and are all arranged at the same section of the pushing piece; the locking bolts are sequentially inserted into the corresponding first mounting holes and the second mounting holes and are in threaded connection with the locking nuts.

Further, the ceiling punching device further includes: an anti-deviation mechanism; the anti-deflection mechanism is arranged on the pushing piece and used for enabling the pushing piece to keep a vertical state.

Further, in the above ceiling punching device, the deviation preventing mechanism includes: the sleeve and the plurality of bracket bodies are obliquely arranged; the sleeve is vertical, and the sleeve is slidably sleeved outside the pushing piece and is connected with the supporting frame through each support body.

Further, in the ceiling punching device, the outer wall of the pushing piece is provided with the sliding block, the inner wall of the sleeve is provided with the sliding groove along the length direction of the sleeve, and the sliding block is slidably arranged in the sliding groove; and/or; each bracket body is uniformly arranged on the outer wall of the sleeve along the circumferential direction of the sleeve; and/or; the support frame is the quadrangle, and the support body is four, and each support body sets up in four corners of support frame respectively.

Further, in the ceiling punching device, the driving mechanism includes: a strut, a drive rod and a foot pedal; the first end of the supporting rod is vertically connected with the supporting frame, the second end of the supporting rod is rotatably connected with the driving rod, and the supporting rod is arranged at the middle part of the driving rod; the first end of the driving rod is detachably connected with the first end of the pushing piece, and the second end of the driving rod is provided with a pedal.

Further, in the ceiling punching device, a plurality of rollers are arranged at the bottom of the supporting frame; and/or one side of the support frame is provided with a pushing handle.

Further, in the ceiling punching device, the supporting frame is provided with a supporting column at a position corresponding to the pushing piece, and the supporting column is used for supporting the first end of the pushing piece.

According to the utility model, the driving mechanism drives the pushing piece to move upwards to drive the mechanism to be punched to move upwards, so that the mechanism to be punched can punch the piece to be punched, the position of the punching mechanism on the pushing piece is adjustable, the integral height of the pushing piece and the punching mechanism can be adjusted, and further, the stable punching of the piece to be punched by the mechanism to be punched is ensured, the problem that the integral height is insufficient and the punching cannot be realized is solved, and each part is directly or indirectly arranged on the support frame.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 is a schematic structural diagram of a roof punching device according to an embodiment of the present utility model.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a roof punching device according to an embodiment of the present utility model. As shown, the ceiling punching device includes: a supporting frame 1, a driving mechanism 2, a punching mechanism 3 and a pushing piece 4. Wherein, the pushing piece 4 is vertical, and the pushing piece 4 is used for being arranged below the piece to be punched. Specifically, the pusher 4 is placed directly below the position to be punched on the piece to be punched.

The punching mechanism 3 is detachably arranged on the pushing piece 4, and the position of the punching mechanism 3 is adjustably arranged on the pushing piece 4, namely, the position of the punching mechanism 3 on the pushing piece 4 is adjustable, so that the integral height of the punching mechanism 3 and the pushing piece 4 is adjusted, and the piece to be punched is stably punched.

The driving mechanism 2 is arranged on the supporting frame 1, the driving mechanism 2 is detachably connected with the pushing piece 4, and the driving mechanism 2 is used for driving the pushing piece 4 to move upwards and then driving the punching mechanism 3 to move upwards so that the punching mechanism 3 punches a hole on a piece to be punched.

Specifically, the support frame 1 may be a quadrangular frame structure formed by sequentially connecting four support rods end to end.

Preferably, the bottom of the support frame 1 is provided with a plurality of rollers 6, so that the support frame 1 can be pushed. Because actuating mechanism 2 sets up in support frame 1 and is connected with impeller 4, and punching press mechanism 3 sets up on impeller 4, so when promoting support frame 1 and remove, promoted whole ceiling perforating device, can remove the ceiling perforating device to the position of arbitrary required punching, convenient operation.

Preferably, a pushing handle 7 is disposed on one side of the support frame 1, specifically, the pushing handle 7 is in a U shape, two ends of the pushing handle 7 are connected with one side of the support frame 1, and the support frame 1 and the pushing handle 7 form a cart structure.

Preferably, the bottom of the supporting frame 1 is provided with a plurality of rollers 6; and/or one side of the support frame 1 is provided with a push handle 7.

It can be seen that in this embodiment, actuating mechanism 2 drive impeller 4 upwards moves, the mechanism 3 that has waited to punch a hole upwards moves, then wait to punch a hole the mechanism 3 and can wait to punch a hole the piece, and, the position of mechanism 3 that punches a hole on impeller 4 is adjustable, can adjust the whole height of impeller 4 and mechanism 3 that punches a hole, and then guarantee to wait to punch a hole the mechanism 3 and wait to punch a hole the stability of piece, avoid whole height not enough and can't realize punching a hole, each part sets up directly or indirectly on support frame 1, when needs to punch a hole like this, only need to remove support frame 1, can drive whole device and remove to the required position of punching a hole, need not like the continuous installation dismantlement of prior art, also need not leasing the platform, save cost, still need not staff overhead operation, the safety risk of overhead operation has been reduced when having solved the ceiling punching in prior art and be convenient for installation and overhead operation has the problem of safety risk.

Referring to fig. 1, in the above embodiment, the pushing member 4 has a cylindrical shape, and the inside of the pushing member 4 is hollow, a first end (lower end shown in fig. 1) of the pushing member 4 is detachably connected to the driving mechanism 2, and a second end (upper end shown in fig. 1) of the pushing member 4 is detachably and positionally adjustably connected to the punching mechanism 3.

The punching mechanism 3 includes: punching device 31, connecting rod 32 and locking assembly. Wherein the punching device 31 is detachably provided at a first end (upper end shown in fig. 1) of the connecting rod 32. Specifically, the punching device 31 may be an electric hammer, or may be another punching position, which is not limited in this embodiment. Preferably, the punching means 31 is connected to the first end of the connecting rod 32 by means of a binding band 9.

The second end (lower end shown in fig. 1) of the connecting rod 32 is movably inserted inside the pusher 4, specifically, the connecting rod 32 has a diameter smaller than the inner diameter of the pusher 4, and the connecting rod 32 is inserted inside the pusher 4 and movable inside the pusher 4.

The locking component is arranged on the pushing piece 4 and is used for locking the connecting rod 32 when the second end of the connecting rod 32 is inserted into the pushing piece 4 to a preset depth. The preset depth may be determined according to practical situations, and the present embodiment does not limit this.

Preferably, the second end of the connecting rod 32 is provided with a plurality of groups of first mounting holes at intervals along the length direction (from top to bottom direction as shown in fig. 1) of the connecting rod 32, and each group includes: the two first mounting holes in each group are oppositely arranged, and the two first mounting holes in each group are all arranged at the same section of the connecting rod 32.

The second end of the pushing member 4 is provided with a plurality of groups of second mounting holes 34 at intervals along the length direction (from top to bottom direction as shown in fig. 1) of the pushing member 4, each group including: the two second mounting holes 34 in each group are oppositely disposed, and the two second mounting holes 34 in each group are disposed at the same cross section of the pusher 4.

The locking assembly includes: a lock bolt 33 and a lock nut. When the second end of the connecting rod 32 is inserted into the pushing member 4 to a preset depth, a set of first mounting holes of the connecting rod 32 corresponds to a set of second mounting holes 34 of the pushing member 4, and the locking bolts 33 are sequentially inserted into the corresponding first mounting holes and the corresponding second mounting holes 34, so that the locking bolts 33 sequentially penetrate through the connecting rod 32 and the pushing member 4 and then are in threaded connection with the locking nuts. Thus, the locking bolt 33 can limit the connecting rod 32, so that the connecting rod 32 is prevented from moving continuously in the pushing piece 4, the position of the connecting rod 32 can be accurately determined, and then the position of the punching device 31 is determined.

In particular, in order to facilitate adjustment of the position of the connecting rod 32, the distance between two adjacent sets of first mounting holes may be determined according to practical situations, which is not limited in this embodiment. Accordingly, the distance between two adjacent sets of second mounting holes 34 may be determined according to practical situations, which is not limited in this embodiment. That is, the distance between the adjacent two sets of first mounting holes and the distance between the two sets of second mounting holes 34 may be larger or smaller according to the actual needs, which is not limited in this embodiment.

It can be seen that in this embodiment, the structure of the punching mechanism 3 is simple, it is convenient to implement, and the punching device 31 is disposed at the first end of the connecting rod 32, the second end of the connecting rod 32 can freely move inside the pushing member 4, that is, the depth of the connecting rod 32 inserted into the pushing member 4 is adjusted, the adjustment of the overall height of the pushing member 4 and the punching mechanism 3 is achieved, the locking assembly locks the connecting rod 32 after the adjustment, the limit of the punching device 31 is achieved, and the punching device 31 is convenient to punch.

Referring to fig. 1, in each of the above embodiments, the ceiling punching device may further include: and an anti-deflection mechanism 5. The anti-deviation mechanism 5 is arranged on the pushing piece 4, and the anti-deviation mechanism 5 is used for enabling the pushing piece 4 to keep a vertical state.

The deviation preventing mechanism 5 may include: a sleeve 51 and a plurality of bracket bodies 52. Wherein, the sleeve 51 is vertical, and the sleeve 51 is slidably sleeved outside the pushing member 4. Each bracket body 52 is obliquely arranged, and the sleeve 51 is connected with the support frame 1 through each bracket body 52. Specifically, the pushing member 4 and the sleeve 51 may be located at positions corresponding to the middle of the support frame 1, and each of the bracket bodies 52 is disposed at a corner of the support frame 1, and each of the bracket bodies 52 supports the sleeve 51.

Preferably, the outer wall of the pushing member 4 is provided with a sliding block, the inner wall of the sleeve 51 is provided with a sliding groove along the length direction of the sleeve 51, and the sliding block is slidably arranged in the sliding groove so as to realize the relative sliding between the pushing member 4 and the sleeve 51.

Preferably, each of the bracket bodies 52 is uniformly provided on the outer wall of the sleeve 51 in the circumferential direction of the sleeve 51.

Preferably, the support frame 1 is quadrilateral, the number of the support frame bodies 52 is four, and each support frame body 52 is respectively arranged at four corners of the support frame 1.

In particular, the sleeve 51 has a length smaller than the length of the pusher 4.

Preferably, the outer wall of the pushing piece 4 is provided with a sliding block, the inner wall of the sleeve 51 is provided with a sliding groove along the length direction, and the sliding block is slidably arranged in the sliding groove; and/or; each of the bracket bodies 52 is provided uniformly on the outer wall of the sleeve 51 in the circumferential direction of the sleeve 51; and/or; the support frame 1 is quadrilateral, and the support body 52 is four, and each support body 52 sets up in four corners of support frame 1 respectively.

It can be seen that in this embodiment, the sleeve 51 is vertical, and the sleeve 51 and the pushing member 4 can slide relatively, so that the driving mechanism 2 can be guaranteed to drive the pushing member 4 to move, and the sleeve 51 is vertical and is supported by the plurality of support bodies 52, so that the sleeve 51 is always kept vertical, that is, the pushing member 4 is always kept vertical, offset and displacement of the pushing member 4 are avoided, and accuracy of punching is further improved.

Referring to fig. 1, in the above embodiment, the driving mechanism 2 includes: a strut 21, a drive rod 22 and a foot pedal 23. Wherein a first end (lower end shown in fig. 1) of the strut 21 is vertically connected to the support frame 1, a second end (upper end shown in fig. 1) of the strut 21 is rotatably connected to the driving rod 22, and the strut 21 is disposed at a middle portion of the driving rod 22. Specifically, the supporting rod 21 may be disposed on one side of the supporting frame 1, and the pushing hands 7 and the supporting rod 21 are both located on the same side of the supporting frame 1, and the supporting rod 21 is perpendicular to the supporting frame 1 and is fixedly connected, and the connection may be welded connection. The support rod 21 is rotatably connected to the middle portion of the driving rod 22, and the rotational connection may be a rotational shaft connection or other rotational connection modes, which is not limited in this embodiment, so that the middle portion of the driving rod 22 may rotate relative to the support rod 21, so that both end portions of the driving rod 22 swing up and down.

A first end (right end shown in fig. 1) of the driving lever 22 is detachably connected to a first end of the pushing member 4, and a second end (left end shown in fig. 1) of the driving lever 22 is provided with a foot pedal 23. Specifically, the pushing member 4 has a cylindrical shape, and the first end of the driving rod 22 is vertically provided with the plugging portion 24, so that the first end of the driving rod 22 and the plugging portion 24 form an L-shaped structure. The outer diameter of the insertion portion 24 is equal to the inner diameter of the pushing member 4, and the insertion portion 24 is inserted into the pushing member 4, so that the driving rod 22 can support the pushing member 4 and is convenient for driving.

It can be seen that, in this embodiment, the operator steps on the pedal 23 to drive the second end of the driving rod 22 to move downward, so that the first end of the driving rod 22 moves upward, and then drives the pushing member 4 to move upward, so that the punching mechanism 3 moves upward, and the punching mechanism 3 can punch a hole on a piece to be punched, so that the structure is simple and implementation is convenient.

Referring to fig. 1, in the above embodiment, the support bracket 1 is provided with a support column 8 corresponding to the pusher 4, and the support column 8 is for supporting the first end of the pusher 4. Specifically, the middle part of support frame 1 is provided with the crossbeam, is provided with support column 8 on the crossbeam perpendicularly, and the position of this support column 8 corresponds with the position of the first end of impeller 4, and support the impeller 4 by support column 8, and then supports mechanism 3 that punches a hole, like this, when moving support frame 1, can drive mechanism 3 that punches a hole and remove together, be convenient for remove, avoided mechanism 3 that punches a hole and impeller 4 fall to ground under the action of gravity, frictional force when the increase removes.

The use process of the roof punching device is described with reference to fig. 1: firstly, determining the position of a piece to be punched, pushing a pushing handle 7 by an operator, moving the whole ceiling punching device, inserting a connecting rod 32 into the pushing piece 4 according to the position to be punched and the position of the punching device 31 when the position of the piece to be punched is reached, moving the connecting rod 32, and penetrating a corresponding first mounting hole and a corresponding second mounting hole 34 by a locking bolt 33 and being in threaded connection with a locking nut when the connecting rod 32 is placed in the pushing piece 4 to a preset depth, so that the fixing of the connecting rod 32, namely the position of the punching device 31, is realized.

The operator steps on the pedal plate 23 by foot, the second end of the driving rod 22 moves downwards, so that the first end of the driving rod 22 moves upwards, the pushing piece 4 is driven to move upwards, the connecting rod 32 is driven to move upwards, and the punching device 31 moves upwards to punch the workpiece to be punched. After punching, the pedal plate 23 is loosened, the pushing piece 4 moves downwards under the action of gravity, the pushing piece 4 is arranged on the supporting column 8, the supporting column 8 supports the pushing piece 4, at the moment, the second end of the driving rod 22 moves upwards, and the pedal plate 23 is in a suspended state.

To sum up, in this embodiment, actuating mechanism 2 drive impeller 4 upwards moves, has driven to wait to punch a hole mechanism 3 upwards to remove, then wait to punch a hole mechanism 3 and can wait to punch a hole the piece, and, punch a hole mechanism 3 position on impeller 4 is adjustable, can adjust the whole height of impeller 4 and mechanism 3 that punches a hole, and then guarantee to wait to punch a hole mechanism 3 to wait to punch a hole the stability of piece, avoid whole height not enough and can't realize punching a hole, each part sets up directly or indirectly on support frame 1, when needs to punch a hole like this, only need to remove support frame 1, can drive whole device and remove to required position of punching a hole, need not to dismantle like the continuous installation of prior art, also need not leasing the platform, save cost, still need not staff high altitude construction, the security risk of high altitude construction has been reduced.

It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, but do not indicate or imply that the apparatus or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. A roof punching device, comprising: the device comprises a supporting frame (1), a driving mechanism (2), a punching mechanism (3) and a pushing piece (4); wherein,,

the pushing piece (4) is vertical and is arranged below a position to be punched on the piece to be punched;

the punching mechanism (3) is detachably and adjustably arranged on the pushing piece (4);

the driving mechanism (2) is arranged on the supporting frame (1) and detachably connected with the pushing piece (4), and is used for driving the pushing piece (4) to move upwards, so as to drive the punching mechanism (3) to move upwards, so that the punching mechanism (3) punches a hole on the piece to be punched.

2. The roof punching device according to claim 1, characterized in that the pushing member (4) is cylindrical and hollow in the interior, a first end of the pushing member (4) is detachably connected to the driving mechanism (2), and a second end of the pushing member (4) is detachably and positionally adjustably connected to the punching mechanism (3).

3. The roof punching device according to claim 2, characterized in that the punching mechanism (3) comprises: the punching device (31), the connecting rod (32) and the locking assembly; wherein,,

the punching device (31) is detachably arranged at the first end of the connecting rod (32);

the second end of the connecting rod (32) is movably inserted into the pushing piece (4);

the locking assembly is arranged on the pushing piece (4) and is used for locking the connecting rod (32) when the second end of the connecting rod (32) is inserted into the pushing piece (4) to a preset depth.

4. The roof punch arrangement of claim 3, wherein the locking assembly includes: a lock bolt (33) and a lock nut; wherein,,

the second end of connecting rod (32) has seted up multiunit first mounting hole along its length direction interval, all includes in every group: the two first mounting holes in each group are oppositely arranged and are all arranged at the same section of the connecting rod (32);

the second end of the pushing piece (4) is provided with a plurality of groups of second mounting holes (34) at intervals along the length direction, and each group comprises: the two second mounting holes (34) in each group are oppositely arranged and are all arranged at the same section of the pushing piece (4);

the locking bolts (33) are sequentially inserted into the corresponding first mounting holes and the corresponding second mounting holes (34) and are in threaded connection with the locking nuts.

5. The roof punching device of claim 1, further comprising: an anti-deviation mechanism (5); wherein,,

the anti-deviation mechanism (5) is arranged on the pushing piece (4) and used for enabling the pushing piece (4) to keep a vertical state.

6. The roof punching device according to claim 5, characterized in that the deviation preventing mechanism (5) comprises: a sleeve (51) and a plurality of bracket bodies (52) which are obliquely arranged; wherein,,

the sleeve (51) is vertical, the sleeve (51) is slidably sleeved outside the pushing piece (4), and the sleeve (51) is connected with the support frame (1) through the support frame bodies (52).

7. The roof punching device as recited in claim 6, characterized in that,

the outer wall of the pushing piece (4) is provided with a sliding block, the inner wall of the sleeve (51) is provided with a sliding groove along the length direction of the sleeve, and the sliding block is slidably arranged in the sliding groove; and/or;

each bracket body (52) is uniformly arranged on the outer wall of the sleeve (51) along the circumferential direction of the sleeve (51); and/or;

the support frame (1) is quadrilateral, the number of the support frame bodies (52) is four, and each support frame body (52) is respectively arranged at four corners of the support frame (1).

8. The roof punching device according to claim 2, characterized in that the driving mechanism (2) comprises: a support rod (21), a driving rod (22) and a pedal (23); wherein,,

the first end of the supporting rod (21) is vertically connected with the supporting frame (1), the second end of the supporting rod (21) is rotatably connected with the driving rod (22), and the supporting rod (21) is arranged at the middle part of the driving rod (22);

the first end of the driving rod (22) is detachably connected with the first end of the pushing piece (4), and the second end of the driving rod (22) is provided with the pedal plate (23).

9. The roof punching device as claimed in claim 1, characterized in that,

the bottom of the supporting frame (1) is provided with a plurality of rollers (6); and/or the number of the groups of groups,

one side of the supporting frame (1) is provided with a pushing handle (7).

10. The roof punching device according to claim 1, characterized in that the support frame (1) is provided with a support column (8) at a position corresponding to the pushing member (4), the support column (8) being for supporting a first end of the pushing member (4).