CN115478680B - Adjustable connecting cross rod device - Google Patents

Abstract

The utility model belongs to the technical field of supporting tools for building construction, and particularly relates to an adjustable connecting cross rod device. According to the utility model, the screw rod, the vertical rod connecting block, the axial opening, the radial column unit, the inner side limit ring groove, the radial limit strip unit and the fixing shaft unit are arranged on the internal thread pipe, so that the screw rod screwing-out length can be checked, and the maximum screwing-out length is provided, and the connection part of the internal thread pipe and the screw rod is prevented from being deformed or broken due to undersize connection and too concentrated stress. The utility model has the following advantages: firstly, the unscrewing length of the two screws can be observed at the axial opening, so that the amplitudes of the screws are as close as possible, and the stress of the whole connecting cross rod is ensured to be more uniform; secondly, the axial opening can avoid overlarge unscrewing length of any screw rod by an observation method, and finally the screw joint of the screw rod and the internal thread pipe is prevented from deforming and breaking.

Description

Adjustable connecting cross rod device

Technical Field

The utility model belongs to the technical field of supporting tools for building construction, and particularly relates to an adjustable connecting cross rod device.

Background

In the construction site, the scaffold, the floor slab, the beam, the node and other concrete structures are required to be properly supported, and the most common and simplest supporting tool is a structure for supporting the vertical rods and connecting transverse rods. The former guarantees sufficient supporting strength, and the latter is used for assisting the reinforcement former, generally can set up a plurality of connection horizontal poles on two adjacent support montants, guarantees that supporting tool's overall structure performance is sufficient.

The existing connecting cross rod has the structure mainly divided into three blocks, namely: the screw rod of middle internal thread pipe, both sides, montant on the screw rod is with the connecting block. The relative distance between the screw rod and the internal thread pipe is adjustable, so that in a certain range, multiple groups of support vertical rods with different distances can be used for connecting the cross rod with one size specification.

The utility model discloses a cross rod and a hook for a biosafety cabinet, which are disclosed in Chinese patent publication No. CN205269683U and publication No. 2016.06.01, and comprise a cross rod body and S-shaped hooks, wherein threaded inner grooves of the cross rod body are arranged at the inner sides of two ends of the cross rod body, a distance adjusting rod is arranged in the threaded inner grooves of the cross rod body, one end of the distance adjusting rod is connected with an adjusting rod head, a plurality of S-shaped hook grooves are formed in the upper side of the cross rod body, and a plurality of S-shaped hooks are arranged on the S-shaped hook grooves.

The cross bar in the patent of the utility model is mainly based on the following principle: the club head can rotate inwards and outwards, so that the overall length of the two adjusting rods and the transverse bar body can be adjusted, the transverse jacking and clamping effects of the transverse bar are ensured, and the transverse bar can be stably realized on two vertical surfaces with different widths.

However, in the practical use process of the cross rod structure, the phenomenon that the extending length of the adjusting rod is too large may occur, at this time, the threaded connection length between the adjusting rod and the cross rod body is insufficient, and the threaded connection strength is insufficient, so that the threaded connection part may be deformed and broken, and both the adjusting rod and the cross rod body have the risk, so that the cross rod structure is quite dangerous.

In other words, the cross bar structure requires a warning effect of a maximum extension beyond which the entire cross bar structure cannot be sufficiently connected and is itself easily damaged.

Therefore, in view of the foregoing, there is a need for a novel connecting rail apparatus that is more secure in amplitude during extension adjustment.

Disclosure of Invention

The utility model provides an adjustable connecting cross rod device, which can ensure that the unscrewing length of a screw rod can be checked by arranging a screw rod, a vertical rod connecting block, an axial opening, a radial column unit, an inner side limiting ring groove, a radial limiting strip unit and a fixed shaft unit on an internal thread pipe, and has a maximum unscrewing length, so that the joint of the internal thread pipe and the screw rod is prevented from being deformed or broken due to undersize connection and concentrated stress.

The utility model adopts the technical proposal that: the utility model provides a connect horizontal pole device with adjustable, the structure includes the internal thread pipe, the screw rod to and the montant connecting block, still including setting up on the internal thread pipe, and be used for exposing the axial opening of screw rod inboard end sets up on the axial opening, and is used for rotating the radial post unit of internal thread pipe, set up on the screw rod inboard spacing annular, set up on the radial post unit inboard terminal surface, be used for the block the radial spacing unit of inboard spacing annular, and set up on the radial post unit, and with the axial opening medial surface is connected, and be used for radially outwards resetting the fixed axle unit of radial spacing unit.

The further preferable technical scheme is as follows: the radial column unit comprises a protruding column body, a side groove, a radial pore canal and an anti-rollback block, wherein the protruding column body is arranged on the protruding column body and used for installing the fixed shaft unit, the side groove is arranged between the side groove and the inner side end face of the protruding column body and used for installing the radial pore canal of the radial limiting strip unit, the side groove is arranged on the side groove and used for clamping the fixed shaft unit.

The further preferable technical scheme is as follows: the radial limit bar unit comprises a movable bar block which is arranged on the radial pore canal and used for being inserted into the inner limit ring groove, and a movable magnet block which is arranged on the radial outer end face of the movable bar block and used for receiving repulsive magnetic force and attractive magnetic force at the fixed shaft unit.

The further preferable technical scheme is as follows: the radial limit bar unit also comprises a ball which is arranged on the radial inner end surface of the movable bar block and used for rolling on the screw rod.

The further preferable technical scheme is as follows: the fixed shaft unit comprises a round shaft body which is arranged on the side groove, two ends of the round shaft body are respectively connected with two inner sides of the axial opening, the round shaft body is arranged on the round shaft body and used for rejecting and jacking up the working state magnet blocks of the movable magnet blocks, and the round shaft body is arranged on the round shaft body and used for attracting and recovering the reset state magnet blocks of the movable magnet blocks after the round shaft body rotates.

The further preferable technical scheme is as follows: the inner side surface of the axial opening is provided with a circular groove for inserting the circular shaft body.

The further preferable technical scheme is as follows: the circular shaft body comprises a middle elastic shaft used for being extruded into the anti-rollback block, two rigid shafts which are respectively arranged on two end faces of the middle elastic shaft and used for being inserted into the circular groove, and the working state magnet block and the reset state magnet block are arranged on the middle elastic shaft.

The further preferable technical scheme is as follows: the fixed shaft unit also comprises a poking column arranged on the rigid shaft and used for axially compressing the middle elastic shaft and annularly rotating the middle elastic shaft.

The further preferable technical scheme is as follows: the fixed shaft unit also comprises a containing groove which is arranged on the middle elastic shaft and is used for installing the working state magnet block and/or the reset state magnet block.

The further preferable technical scheme is as follows: the two rigid shafts are respectively positioned at two sides of the anti-rollback block.

The present utility model has the following advantages.

First, the axial opening part can observe the unscrewing length of two screw rods, so that the amplitude of the screw rods is similar as much as possible, and the stress of the whole connecting cross rod is more uniform.

Secondly, the axial opening can avoid overlarge unscrewing length of any screw rod by an observation method, and finally the screw joint of the screw rod and the internal thread pipe is prevented from deforming and breaking.

Thirdly, the fixed shaft unit is always propped against the radial limit strip unit inwards in a magnetic repulsion mode, so that once the screw rod is largely outwards screwed out, the radial limit strip unit can be inserted into the inner limit ring groove, the screw rod cannot be outwards screwed out any more, the maximum and safe screwing-out size is achieved, and deformation and breakage of the screwed-out position are avoided.

Fourth, after the fixed shaft unit rotates, the magnetic repulsive state is switched to a magnetic attractive state, the radial limit bar unit is sucked out of the inner limit ring groove, the radial limit bar unit can be reset, the screw rod rotates inwards to a safe amplitude, and the whole connecting cross bar device can be reused.

Fifth, the length of the fixed shaft unit in the axial direction is changeable, so that the fixed shaft unit can be smoothly assembled and disassembled on the radial column unit and the circular groove.

Sixth, the radial column unit is a force application position of the internal thread pipe relative to the screw rod for rotation adjustment, so that the rotation action of the internal thread pipe is ensured to be relatively labor-saving.

Seventh, the fixed shaft unit is detachable, and its mounting and dismounting operations are relatively simple, and the mounting strength for the radial column unit is sufficient.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic view of the position structure of the inner limiting ring groove in the present utility model.

FIG. 3 is a schematic view of the position structure of the radial column unit in the present utility model.

Fig. 4 is a schematic diagram of a position structure of an anti-rollback block in the present utility model.

Fig. 5 is a schematic diagram of the positions of the working state magnet block and the reset state magnet block compared with the movable magnet block in the present utility model.

Fig. 6 is a schematic structural view of a fixing shaft unit in the present utility model.

In the drawings, the meanings indicated by the respective reference numerals are as follows: the device comprises an internal thread tube a, a screw b, a vertical rod connecting block c, an axial opening 1, a radial column unit 2, an inner limit ring groove 3, a radial limit strip unit 4, a fixed shaft unit 5, a protruding column 201, a side groove 202, a radial hole 203, an anti-rollback block 204, a movable strip block 401, a movable magnet block 402, a ball 403, a round shaft body 501, a working state magnet block 502, a reset state magnet block 503, a round groove 6, a middle elastic shaft 501a, a rigid shaft 501b, a stirring column 504 and a containing groove 505.

Detailed Description

The following description is of the preferred embodiments of the utility model and is not intended to limit the scope of the utility model.

As shown in fig. 1-6, an adjustable connecting cross rod device structurally comprises an internal thread pipe a, a screw rod b, a vertical rod connecting block c, an axial opening 1 arranged on the internal thread pipe a and used for exposing the inner side end of the screw rod b, a radial column unit 2 arranged on the axial opening 1 and used for rotating the internal thread pipe a, an inner limit ring groove 3 arranged on the screw rod b, a radial limit strip unit 4 arranged on the inner side end surface of the radial column unit 2 and used for clamping the inner limit ring groove 3, and a fixed shaft unit 5 arranged on the radial column unit 2 and connected with the inner side surface of the axial opening 1 and used for radially outwards resetting the radial limit strip unit 4.

In this embodiment, the connecting rail arrangement is arranged as follows in a manner known in the art.

The thread directions of the first and the second screw rods b are opposite.

In other words, after both screws b are fixed to the vertical rod, both screws b are either far apart or close together when the internally threaded tube a is rotated.

And a bolt hole for connecting the vertical rod is formed in the vertical rod connecting block c.

And the third vertical rod and the vertical rod are generally in a unit of four so as to be fully and stably supported, at the moment, the connecting cross rod devices are required to be arranged between every two vertical rods, the vertical rods are rotationally adjusted to be of proper length, and finally, the connecting cross rod devices are added to the vertical rods, so that a stable supporting frame body is formed.

In addition, the inner side ends of the screw rods b can be seen at the axial opening 1, and the two screw rods b extend out of the internal thread pipe a for a similar length, so that the stress uniformity and stability of the connecting cross rod device are facilitated.

And once the inner limit groove 3 moves outwards to reach the position of the radial limit groove 4, the radial limit groove 4 can be inserted into the inner limit groove 3 immediately, so that the screw b is prevented from extending outwards again, and the maximum safe extension length of the screw b is obtained.

If the screw rod b stretches out again, the length of the screw joint section of the screw rod b and the internal thread pipe a is relatively smaller, and the connecting cross rod device is concentrated in stress and is easy to deform and break when in use.

Finally, the fixing shaft unit 5 can enable the radial limit bar unit 4 to move out, namely reset, radially outwards, and at the moment, the screw b rotates inwards for a certain distance, so that the connecting cross bar device can be normally used.

The radial column unit 2 comprises a protruding column 201, a side groove 202 arranged on the protruding column 201 and used for installing the fixed shaft unit 5, a radial duct 203 arranged between the side groove 202 and the inner side end surface of the protruding column 201 and used for installing the radial limit strip unit 4, and an anti-retraction block 204 arranged on the side groove 202 and used for clamping the fixed shaft unit 5.

In this embodiment, one or both screws b are held by hand, and then the protruding cylinder 201 is rotated to rotate the internally threaded tube a on the screw b, so that the screw b can be unscrewed or retracted.

In addition, after two montant connecting blocks c respectively with two montant virtual bit spiro union, rotatory protruding cylinder 201 can with two screw rod b outwards stretches out by a small margin again, until montant connecting block c hugs closely the montant, at this moment the last screw up of bolt on the montant connecting block c, this connection horizontal pole device just has just all installed properly yet.

Finally, the side groove 202 is provided with an anti-back-off block 204, which ensures that the protruding cylinder 201 is not easy to fall off on the fixed shaft unit 5, and even if the protruding cylinder 201 is not perpendicular to the internal thread tube a, the former is properly inclined, the force application effect of the protruding cylinder 201 is not affected, and the internal thread tube a can be rotated relatively with little effort.

The radial limit bar unit 4 comprises a movable bar 401 which is arranged on the radial hole 203 and is used for being inserted into the inner limit ring groove 3, and a movable magnet 402 which is arranged on the radial outer end surface of the movable bar 401 and is used for receiving the repulsive magnetic force and attractive magnetic force at the fixed shaft unit 5.

In this embodiment, the connecting rail device is used safely, and both the inner limit ring grooves 3 are located between the two movable bars 401. When any one of the screws b rotates excessively outwards, the inner limiting ring groove 3 is moved outwards to the radial hole channel 203, that is, the inner side of the movable bar block 401, and at this time, the repulsive magnetic force of the fixed shaft unit 5 to the movable magnet block 402 can randomly press the movable bar block 401 into the inner limiting ring groove 3, so that the screw b is prevented from rotating outwards again.

At this point, the corresponding position of the connecting rail arrangement is already at the maximum safe use length. For example, it requires a total elongation of 40cm, whereas the maximum safe elongation of one side of screw b is 30cm, the elongation scheme of 30cm on one side and 10cm on the other side is not optimal.

Resetting the clamped movable bar 401 on one side, and finally changing the elongation of the screws b on two sides to 20cm, thereby being the safest and most reasonable connecting cross rod using mode.

The above-mentioned resetting action of the movable bar 401 requires the fixed shaft unit 5 to switch the different magnetic force states of the movable magnet block 402, i.e., from repulsive to attractive.

The radial limit bar unit 4 further includes balls 403 disposed on a radially inner end surface of the movable bar 401 and adapted to roll on the screw b.

In this embodiment, when the screw b is used safely, the movable bar 401 needs to be directly pressed on the screw thread, and if the balls 403 are not present, the screw thread of the screw b is easily worn out.

The balls 403 are fitted to the radially inner end surfaces of the movable bar 401, and are not likely to fall off.

The fixed shaft unit 5 includes a circular shaft body 501 disposed on the side slot 202, two ends of the circular shaft body 501 are respectively connected with two inner sides of the axial opening 1, a working state magnet block 502 disposed on the circular shaft body 501 and used for repelling and jacking up the movable magnet block 402, and a reset state magnet block 503 disposed on the circular shaft body 501 and used for attracting and retracting the movable magnet block 402 after the circular shaft body 501 rotates.

In this embodiment, the circular shaft body 501 needs to be properly pressed, i.e. interference fit, between the side groove 202 and the anti-rollback block 204, and the protruding cylinder 201 is not easy to rotate around the circular shaft body 501, otherwise the movable bar 401 cannot align with the inner limit ring groove 3.

Moreover, the circular shaft 501 cannot rotate spontaneously by itself, ensuring that the working magnet 502 is always facing the movable magnet 402.

Finally, the number of central angles between the working magnet block 502 and the reset magnet block 503 is the angle at which the circular shaft body 501 needs to rotate when the movable bar 401 is reset.

A circular groove 6 for inserting the circular shaft body 501 is arranged on the inner side surface of the axial opening 1.

In this embodiment, the circular shaft 501 cannot spontaneously rotate on the circular groove 6, preventing the working magnet block 502 from rotating away from the movable magnet block 402.

The circular shaft body 501 comprises a middle elastic shaft 501a for being extruded into the anti-rollback block 204, and two rigid shafts 501b which are respectively arranged on two end faces of the middle elastic shaft 501a and are used for being inserted into the circular groove 6, and the working state magnet block 502 and the reset state magnet block 503 are both arranged on the middle elastic shaft 501 a.

In this embodiment, the material of the middle elastic shaft 501a is soft rubber, the material of the rigid shaft 501b is hard resin, the former ensures that the anti-rollback block 204 can be extruded in and out, and the whole length of the circular shaft body 501 can be shortened when the circular shaft body is installed on the circular groove 6 until the circular groove 6 is aligned, the shortening and compressing actions of the middle elastic shaft 501a are cancelled, and the circular shaft body 501 is smoothly inserted into the circular groove 6.

It should be noted that the protruding column 201 is connected with the internal thread tube a with high strength, the former is not easy to drop when pushed, and the rigidity of the rigid shaft 501b is used.

In other words, the middle elastic shaft 501a may be soft, and a core leg may be added to the rigid shaft 501 b.

Finally, depending on the soft characteristic of the middle elastic shaft 501a, the axial shortening and the circumferential deformation are required, and finally, the round shaft body 501 is ensured to be smoothly assembled and disassembled in the anti-backspacing block 204 and on the round groove 6.

The fixed shaft unit 5 further includes a toggle post 504 disposed on the rigid shaft 501b and configured to axially compress the middle elastic shaft 501a and to annularly rotate the middle elastic shaft 501 a.

In this embodiment, the toggle post 504 has at least the following two functions.

First, when the circular shaft body 501 is installed, the two poking columns 504 are pinched and then are close to each other, so that the circular shaft body 501 is shortened, and after the circular groove 6 is aligned, the poking columns 504 are loosened, and the circular shaft body 501 is installed completely, and then is removed similarly.

In other words, when the circular shaft body 501 is not subjected to an external force, the length of the circular shaft body 501 is equal to the distance between the inner side surfaces of the two circular grooves 6, the circular shaft body 501 cannot be mounted without being shortened, and the middle elastic shaft 501a is effectively moved in and out on the anti-retraction block 204 in a hard extrusion deformation manner.

Second, when the movable bar 401 needs to be reset from the inner limiting ring groove 3, the reset state magnet 503 needs to be rotated inwards, and the stirring post 504 is a force application part for rotating in a circumferential direction, otherwise, the round shaft 501 needs to be pinched for further rotation, which is quite laborious.

Therefore, in summary, the pulling posts 504 need to be axially close and rotate downwards in a circular direction, so that the above two actions do not need to directly operate the circular shaft body 501, which is very labor-saving and convenient.

The fixed shaft unit 5 further includes a receiving groove 505 provided on the middle elastic shaft 501a for mounting the operating state magnet block 502 and/or the reset state magnet block 503.

In this embodiment, if the working magnet block 502 and the reset magnet block 503 are protruded on the annular surface of the middle elastic shaft 501a, the working magnet block 502 and the reset magnet block 503 are easily pushed out by the anti-back-off block 204 when the middle elastic shaft 501a is pushed in and pushed out on the anti-back-off block 204.

Therefore, after one or two accommodating grooves 505 are provided, the working state magnet block 502 and the reset state magnet block 503 are installed in a retracted form, so that the magnetic effect is not affected, and the fixing is safe.

Two of the rigid shafts 501b are located at both side positions of the anti-rollback block 204, respectively.

In this embodiment, the opening width of the side slot 202 is the maximum allowable rotation angle of the toggle post 504, so that the number of degrees of central angles between the working state magnet block 502 and the reset state magnet block 503 cannot be too large, otherwise, the magnetic repulsion and the magnetic attraction cannot be fully switched.

In addition, the material of the anti-retraction block 204 is consistent with that of the protruding cylinder 201, and therefore, the anti-retraction block 204 is not suitable for squeezing the rigid shaft 501b, the anti-retraction block 204 is not only arranged in the middle, but also has a relatively smaller left-right dimension, and is smaller than the optimal length of the middle elastic shaft 501 a.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments, and various modifications may be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model. These are all non-inventive modifications which are intended to be protected by the patent laws within the scope of the appended claims.

Claims (4)

1. The utility model provides a connect horizontal pole device with adjustable, the structure includes internal thread pipe (a), screw rod (b) to and montant connecting block (c), its characterized in that: the device also comprises an axial opening (1) which is arranged on the inner threaded pipe (a) and used for exposing the inner side end of the screw rod (b), a radial column unit (2) which is arranged on the axial opening (1) and used for rotating the inner threaded pipe (a), an inner side limit ring groove (3) which is arranged on the screw rod (b), a radial limit strip unit (4) which is arranged on the inner side end surface of the radial column unit (2) and used for clamping the inner side limit ring groove (3), and a fixed shaft unit (5) which is arranged on the radial column unit (2) and connected with the inner side surface of the axial opening (1) and used for radially resetting the radial limit strip unit (4),

the radial column unit (2) comprises a protruding column body (201), a side groove (202) which is arranged on the protruding column body (201) and used for installing the fixed shaft unit (5), a radial pore canal (203) which is arranged between the side groove (202) and the inner side end surface of the protruding column body (201) and used for installing the radial limit strip unit (4), and an anti-backspacing block (204) which is arranged on the side groove (202) and used for clamping the fixed shaft unit (5),

the radial limit bar unit (4) comprises a movable bar block (401) which is arranged on the radial pore canal (203) and is used for being inserted into the inner limit ring groove (3), and a movable magnet block (402) which is arranged on the radial outer end surface of the movable bar block (401) and is used for receiving repulsive magnetic force and attractive magnetic force at the fixed shaft unit (5),

the fixed shaft unit (5) comprises a round shaft body (501) which is arranged on the side groove (202) and two ends of which are respectively connected with two inner sides of the axial opening (1), a working state magnet block (502) which is arranged on the round shaft body (501) and is used for rejecting and jacking up the movable magnet block (402), and a reset state magnet block (503) which is arranged on the round shaft body (501) and is used for attracting and retracting the movable magnet block (402) after the round shaft body (501) rotates,

a circular groove (6) for inserting the circular shaft body (501) is arranged on the inner side surface of the axial opening (1),

the circular shaft body (501) comprises a middle elastic shaft (501 a) used for being extruded into the anti-rollback block (204), two rigid shafts (501 b) which are respectively arranged on two end faces of the middle elastic shaft (501 a) and used for being inserted into the circular groove (6), the working state magnet block (502) and the reset state magnet block (503) are both arranged on the middle elastic shaft (501 a),

the fixed shaft unit (5) further comprises a toggle column (504) which is arranged on the rigid shaft (501 b) and used for axially compressing the middle elastic shaft (501 a) and annularly rotating the middle elastic shaft (501 a).

2. An adjustable connecting rail apparatus as defined in claim 1, wherein: the radial limit bar unit (4) further comprises a ball (403) which is arranged on the radial inner end surface of the movable bar block (401) and is used for rolling on the screw (b).

3. An adjustable connecting rail apparatus as defined in claim 1, wherein: the fixed shaft unit (5) further comprises a containing groove (505) which is arranged on the middle elastic shaft (501 a) and is used for installing the working state magnet block (502) and/or the reset state magnet block (503).

4. An adjustable connecting rail apparatus as defined in claim 1, wherein: two of the rigid shafts (501 b) are located at both side positions of the anti-rollback block (204), respectively.