CN220976401U - Tower crane lifting capacity limiter - Google Patents
Tower crane lifting capacity limiter Download PDFInfo
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- CN220976401U CN220976401U CN202321355715.XU CN202321355715U CN220976401U CN 220976401 U CN220976401 U CN 220976401U CN 202321355715 U CN202321355715 U CN 202321355715U CN 220976401 U CN220976401 U CN 220976401U
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- 238000011217 control strategy Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
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Abstract
The utility model discloses a tower crane lifting weight limiter, which comprises a force measuring ring, a circuit board, a first arc-shaped sheet and a second arc-shaped sheet; the upper cover of the force measuring ring is provided with an end cover, a plurality of self-locking bolts are connected between the force measuring ring and the end cover, and a pair of wire ends are connected to the end cover; the circuit board is arranged in the force measuring ring, the circuit board is electrically connected with the connector lug, a plurality of first thread seats are connected to the circuit board, a clearance groove is formed in the circuit board, and a pair of second thread seats are arranged in the clearance groove; the first arc-shaped piece is arranged in the end cover and on the upper side of the circuit board, a pair of connecting parts are symmetrically connected on the first arc-shaped piece, a pair of combined screws are connected between the connecting parts and the first threaded seat, and through holes are formed in the connecting parts in a penetrating mode. According to the utility model, through the arrangement of the corresponding mechanism, the stress detection of the lifting limiter in different directions can be increased, so that the lifting limiter can accurately measure the lifting weight of the tower crane, the worker can timely respond to the lifting weight, and the probability of safety accidents is reduced.
Description
Technical Field
The utility model belongs to the technical field of limiters, and particularly relates to a tower crane lifting weight limiter.
Background
The tower crane is a tower crane with a tower-shaped steel frame, capable of walking along a track and provided with a full-circle rotating arm. The tower crane is mainly used for vertical and horizontal conveying of materials and installation of building components in house building construction. The tower crane consists of a metal structure, a working mechanism and an electric system. The metal structure comprises a tower body, a movable arm, a base and the like; the working mechanism comprises four parts of lifting, amplitude changing, rotation and walking; the electrical system comprises a motor, a controller, a power distribution cabinet, a connecting line, a signal and lighting device and the like.
When the tower crane is used, a lifting limiter is installed for ensuring safety, for example, the number of the publication in the patent library is: CN205634665U, a chinese patent of utility model, discloses a lifting weight detecting device and a tower crane lifting weight limiter with the device, the patent describes the use method of the existing lifting weight limiter, i.e. the lifting weight limiter has two force measuring rings, one force measuring ring is an empty ring for playing the role of symmetrical weight; the other measuring ring is used for measuring the pulling force of the steel wire rope, and when the tower crane is hung, the weight of the hanging weight can be changed into the pulling force on the measuring ring in proportion. When the force measuring ring is pulled, the force measuring ring can generate deformation which is pulled up and down, two arc-shaped elastic sheets are arranged in the force measuring ring, and a limit switch and a spring head are respectively arranged on the two arc-shaped elastic sheets. When the force measuring ring is pulled up and down to deform under the action of the hanging weight, the relative distance between the two arc-shaped elastic sheets is reduced, certain fixed hanging weight values can trigger the limit switch to act by adjusting the relative distance between the collision head and the limit switch, and the electric control system of the tower crane can know the current hanging weight by detecting the on-off states of different limit switches, so that different control strategies are adopted.
However, when the existing lifting weight limiter is used, the tensile force detection can be carried out only in the same direction, and when the force measuring ring is stressed unevenly, the lifting weight limiter cannot accurately measure the stress working condition of the force measuring ring, so that a worker cannot accurately know the lifting weight of the tower crane, and certain potential safety hazards exist.
Accordingly, in view of the above-described problems, it is necessary to provide a tower crane lifting weight limiter.
Disclosure of utility model
The utility model aims to provide a lifting capacity limiter of a tower crane, which aims to solve the problem that the lifting capacity limiter cannot accurately measure the stress working condition.
In order to achieve the above object, an embodiment of the present utility model provides the following technical solution:
A lifting weight limiter of a tower crane comprises a force measuring ring, a circuit board, a first arc-shaped sheet and a second arc-shaped sheet;
The upper cover of the force measuring ring is provided with an end cover, a plurality of self-locking bolts are connected between the force measuring ring and the end cover, and a pair of wire ends are connected to the end cover;
The circuit board is arranged in the force measuring ring, the circuit board is electrically connected with the connector lug, a plurality of first thread seats are connected to the circuit board, a clearance groove is formed in the circuit board, and a pair of second thread seats are arranged in the clearance groove;
The first arc-shaped piece is arranged in the end cover and on the upper side of the circuit board, a pair of connecting parts are symmetrically connected to the first arc-shaped piece, a pair of combined screws are connected between the connecting parts and the first thread seat, and through holes are formed in the connecting parts in a penetrating mode;
The second arc-shaped piece is arranged on the upper side of the first arc-shaped piece, a pair of thread sleeves are connected to the second arc-shaped piece, the thread sleeves penetrate through the through holes and correspond to the two thread seats, a screw is connected to the thread sleeves, and the screw is in threaded connection with the second thread seat.
Further, a dustproof rubber pad is arranged between the force measuring ring and the end cover and used for guaranteeing the connection effect between the force measuring ring and the end cover, so that dust is not easy to enter the force measuring ring, and the safety of a circuit board in the force measuring ring is guaranteed.
Further, the inner wall of the force measuring ring is provided with a pair of clamping grooves, the first arc-shaped sheet and the second arc-shaped sheet are respectively clamped in the pair of clamping grooves and used for clamping the first arc-shaped sheet and the second arc-shaped sheet, so that the fixing effect of the first arc-shaped sheet and the second arc-shaped sheet is guaranteed, the first arc-shaped sheet and the second arc-shaped sheet can better follow deformation of the force measuring ring to deform, and the force measuring ring is used for measuring the lifting weight of the tower crane.
Further, a pair of limiting plates are arranged on the circuit board and used for limiting the second arc-shaped plate, so that the second arc-shaped plate can deform along with deformation of the force measuring ring.
Further, be connected with a pair of block piece on the arc piece two, a pair of the block piece respectively with a pair of spacing piece is corresponding, block piece and spacing piece looks block for fixed arc piece two, guarantee the installation fastness of arc piece two, so that arc piece two follows the dynamometry ring and deforms, be used for measuring the lifting weight of tower machine.
Compared with the prior art, the utility model has the following advantages:
According to the utility model, through the arrangement of the corresponding mechanism, the stress detection of the lifting limiter in different directions can be increased, so that the lifting limiter can accurately measure the lifting weight of the tower crane, the worker can timely respond to the lifting weight, and the probability of safety accidents is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic view showing a part of the structure of a tower crane lifting limiter according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of the structure of FIG. 1 at A;
FIG. 3 is a schematic view of an arc-shaped sheet mounting structure according to an embodiment of the present utility model;
FIG. 4 is a schematic view of the structure of FIG. 3B;
FIG. 5 is a schematic view of a second mounting structure of an arc-shaped sheet according to an embodiment of the present utility model;
FIG. 6 is a schematic view of the structure of FIG. 5 at C;
Fig. 7 is a perspective view of a tower lift limiter according to an embodiment of the present utility model.
In the figure: 1. force measuring ring, 101, end cover, 102, self-locking bolt, 103, connector lug, 104, clamping groove, 2, circuit board, 201, screw seat one, 202, clearance groove, 203, limit piece, 3, arc piece one, 301, connecting part, 302, combined screw, 303, through hole, 4, arc piece two, 401, screw sleeve, 402, screw, 403, clamping piece.
Detailed Description
The present utility model will be described in detail below with reference to the embodiments shown in the drawings. The embodiments are not intended to limit the utility model, but structural, methodological or functional modifications from the embodiments are within the scope of the utility model.
The utility model discloses a tower crane lifting weight limiter, which is shown in figures 1-7 and comprises a force measuring ring 1, a circuit board 2, an arc-shaped sheet I3 and an arc-shaped sheet II 4.
Wherein, force measuring ring 1 upper cover is equipped with end cover 101, mutually support with force measuring ring 1 for installation circuit board 2, arc piece one 3 and arc piece two 4, so that utilize arc piece one 3 and arc piece two 4 to produce deformation and know current tower crane and lift by crane weight, make things convenient for the staff to make the processing.
Preferably, a dustproof rubber pad is arranged between the force measuring ring 1 and the end cover 101 and used for ensuring the connection effect between the force measuring ring 1 and the end cover 101, so that dust is not easy to enter the force measuring ring 1 and the safety of the circuit board 2 in the force measuring ring 1 is ensured.
In addition, a plurality of self-locking bolts 102 are connected between the force measuring ring 1 and the end cover 101, and the force measuring ring 1 and the end cover 101 are fixed through the self-locking bolts 102.
Specifically, the end cover 101 is connected with a pair of connectors 103, which are used for being connected with the circuit board 2, so as to transmit signals monitored by the circuit board 2, and facilitate the staff to know the deformation of the current arc-shaped piece one 3 and the arc-shaped piece two 4, and further judge the lifting weight of the tower crane.
In addition, the inner wall of the force measuring ring 1 is provided with a pair of clamping grooves 104, and the first arc-shaped sheet 3 and the second arc-shaped sheet 4 are respectively clamped in the pair of clamping grooves 104. The clamping groove 104 is used for clamping the first arc-shaped piece 3 and the second arc-shaped piece 4, so that the fixing effect of the first arc-shaped piece 3 and the second arc-shaped piece 4 is guaranteed, the first arc-shaped piece 3 and the second arc-shaped piece 4 can better follow the deformation of the force measuring ring 1 to deform, and the lifting weight of the tower crane is measured.
Referring to fig. 1 to 7, a circuit board 2 is mounted in a load ring 1, and the circuit board 2 is electrically connected to a connector lug 103. The circuit board 2 is provided with the bump, the arc-shaped sheet I3 is provided with the travel switch, when the arc-shaped sheet I3 and the arc-shaped sheet II 4 deform, the travel switch can be contacted with the bump, the fixed hanging weight value can trigger the action of the limit switch by adjusting the relative distance between the bump and the limit switch, and the electric control system of the tower crane can know the current hanging weight by detecting the on-off states of different limit switches, thereby adopting different control strategies.
Preferably, the force measuring ring 1 and the circuit board 2 adopted in the application are both in the prior art, and the connection between the components is also in the prior art, so that the connection and the working principle thereof are not repeated here.
Wherein, the circuit board 2 is connected with a plurality of screw thread seats 201 for fixing the arc-shaped sheet 3.
In addition, the circuit board 2 is provided with a clearance groove 202, and a pair of second screw seats are arranged in the clearance groove 202, and the second screw seats are matched with the screw sleeves 401 and the screws 402 for fixing the second arc-shaped pieces 4.
Specifically, the circuit board 2 is provided with a pair of limiting pieces 203 for limiting the second arc-shaped piece 4, so that the second arc-shaped piece 4 can deform along with the deformation of the force measuring ring 1.
Referring to fig. 1-7, the first arc-shaped piece 3 is disposed in the end cover 101 and is disposed on the upper side of the circuit board 2. When the force measuring ring 1 is pulled, the force measuring ring 1 can generate deformation which is pulled up and down, so that the arc-shaped sheet I3 and the arc-shaped sheet II 4 are deformed.
A pair of connecting parts 301 are symmetrically connected to the first arc-shaped piece 3, and a pair of combination screws 302 are connected between the connecting parts 301 and the first screw seat 201. The first arc-shaped sheet 3 is fixed on the circuit board 2 through the connecting part 301 and the combination screw 302, and when the first arc-shaped sheet 3 deforms, a travel switch on the first arc-shaped sheet 3 contacts with a latch on the circuit board 2.
In addition, a through hole 303 is formed in the connecting portion 301 for passing through the threaded sleeve 401 so as to fix the second arc piece 4.
Referring to fig. 1-7, the second arc-shaped piece 4 is arranged on the upper side of the first arc-shaped piece 3, a pair of thread sleeves 401 are connected to the second arc-shaped piece 4, the thread sleeves 401 penetrate through the through holes 303 to correspond to the two thread seats, a screw 402 is connected to the thread sleeves 401, and the screw 402 is in threaded connection with the two thread seats. The second arc-shaped piece 4 is connected with the second thread seat through a thread bush 401 and a screw 402 and is used for fixing the second arc-shaped piece 4.
Preferably, the installation direction of the first arc-shaped piece 3 and the second arc-shaped piece 4 is shown in reference to fig. 1, and the deformation of the first arc-shaped piece 3 and the second arc-shaped piece 4 in different directions of the force measuring ring 1 is utilized for carrying out stress detection, so that a worker can know the lifting weight of the tower crane in time.
The second arc-shaped piece 4 is connected with a pair of engaging pieces 403, the engaging pieces 403 respectively correspond to the pair of limiting pieces 203, and the engaging pieces 403 are engaged with the limiting pieces 203. Through the mutual block of block piece 403 and spacing piece 203 for fixed arc piece two 4, guarantee the installation fastness of arc piece two 4, so that arc piece two 4 follows force measuring ring 1 and deforms, be used for measuring the lifting weight of tower machine.
Compared with the lifting weight limiter with unidirectional arc sheets arranged on the market, the lifting weight limiter is provided with the arc sheets II 4, the arc sheets I3 and II are perpendicular to each other, and the deformation of the force measuring ring 1 in different directions can be subjected to force detection through the arrangement of the arc sheets I3 and II 4, so that the lifting weight limiter can accurately measure the lifting weight of the tower crane, so that staff can respond in time, and the probability of safety accidents is reduced.
The technical scheme shows that the utility model has the following beneficial effects:
According to the utility model, through the arrangement of the corresponding mechanism, the stress detection of the lifting limiter in different directions can be increased, so that the lifting limiter can accurately measure the lifting weight of the tower crane, the worker can timely respond to the lifting weight, and the probability of safety accidents is reduced.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment contains only one independent technical solution, and that such description is provided for clarity only, and that the technical solutions of the embodiments may be appropriately combined to form other embodiments that will be understood by those skilled in the art.
Claims (5)
1. A tower crane lifting weight limiter, comprising:
The force measuring ring (1), wherein an end cover (101) is arranged on the upper cover of the force measuring ring (1), a plurality of self-locking bolts (102) are connected between the force measuring ring (1) and the end cover (101), and a pair of wire ends (103) are connected to the end cover (101);
The circuit board (2) is arranged in the force measuring ring (1), the circuit board (2) is electrically connected with the connector lug (103), a plurality of first thread seats (201) are connected to the circuit board (2), a clearance groove (202) is formed in the circuit board (2), and a pair of second thread seats are arranged in the clearance groove (202);
The first arc-shaped piece (3) is arranged in the end cover (101) and is arranged on the upper side of the circuit board (2), a pair of connecting parts (301) are symmetrically connected to the first arc-shaped piece (3), a pair of combined screws (302) are connected between the connecting parts (301) and the first thread seat (201), and through holes (303) are formed in the connecting parts (301) in a penetrating mode;
arc piece two (4) are located arc piece one (3) upside, be connected with a pair of thread bush (401) on arc piece two (4), thread bush (401) pass through-hole (303) with screw seat two-phase correspondence, be connected with screw (402) on thread bush (401), screw (402) and screw seat two threaded connection.
2. A tower crane lifting limiter according to claim 1, characterized in that a dust-proof rubber pad is arranged between the force measuring ring (1) and the end cap (101).
3. The tower crane lifting weight limiter according to claim 1, wherein a pair of clamping grooves (104) are formed in the inner wall of the force measuring ring (1), and the first arc-shaped sheet (3) and the second arc-shaped sheet (4) are respectively clamped in the pair of clamping grooves (104).
4. A tower crane lifting limiter according to claim 1, wherein the circuit board (2) is provided with a pair of limiting tabs (203).
5. The tower crane lifting limiter according to claim 4, wherein the arc-shaped second piece (4) is connected with a pair of engaging pieces (403), the engaging pieces (403) respectively correspond to the limiting pieces (203), and the engaging pieces (403) are engaged with the limiting pieces (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321355715.XU CN220976401U (en) | 2023-05-31 | 2023-05-31 | Tower crane lifting capacity limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321355715.XU CN220976401U (en) | 2023-05-31 | 2023-05-31 | Tower crane lifting capacity limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220976401U true CN220976401U (en) | 2024-05-17 |
Family
ID=91061037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321355715.XU Active CN220976401U (en) | 2023-05-31 | 2023-05-31 | Tower crane lifting capacity limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220976401U (en) |
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2023
- 2023-05-31 CN CN202321355715.XU patent/CN220976401U/en active Active
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