CN112963471B - Horizontal wheel brake for gantry crane - Google Patents
Horizontal wheel brake for gantry crane Download PDFInfo
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- CN112963471B CN112963471B CN202110243311.0A CN202110243311A CN112963471B CN 112963471 B CN112963471 B CN 112963471B CN 202110243311 A CN202110243311 A CN 202110243311A CN 112963471 B CN112963471 B CN 112963471B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
- F16D63/008—Brakes acting on a linearly moving member
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Abstract
The invention relates to the field of electric wheel brakes, in particular to a horizontal wheel brake for a gantry crane, which comprises a square support, a friction plate, a speed reducing motor and the following components: the screw rod moving assembly is arranged in the square support, the speed reducing motor is arranged on the square support, and an output shaft of the speed reducing motor is in transmission connection with one end of an input shaft of the screw rod moving assembly; the clamping jaw assembly is characterized in that an opening of the clamping jaw assembly is arranged on the outer side of the square support along the radial direction of the wheel edge and horizontally, the clamping jaw assembly comprises a driving rod, the driving rod is in transmission connection with the working end of the screw rod moving assembly, and the friction plates are arranged on two sides of a clamping opening of the clamping jaw assembly; the reset spring is coaxially sleeved on the driving rod; the torsional spring is sleeved at the other end of the input shaft of the screw rod moving assembly, two ends of the torsional spring are fixedly connected with the inner side of the square support and the circumferential surface of the input shaft of the screw rod moving assembly respectively, and the wheel-side brake can automatically brake when power is off and can be horizontally installed on the gantry crane.
Description
Technical Field
The invention relates to the field of electric wheel-side brakes, in particular to a horizontal wheel-side brake for a gantry crane.
Background
The gantry crane is a large machine widely used in railway freight yards, ports, docks and other places for loading and unloading large and heavy goods and containers, and along with the development of domestic economy, the market demand of the gantry crane is more and more vigorous. However, the situation that strong convection weather suddenly breaks out of strong wind sometimes happens in coastal areas, and the dynamic windproof device sometimes cannot guarantee reliable braking to cause the whole crane to tip over, so that major safety accidents are caused.
In recent years, collapse accidents caused by high wind during operation of coastal gantry cranes and gantry cranes frequently occur, casualties and huge economic losses are caused, and the wind resistance of various wind prevention devices of the cranes is worth discussing. Wind protection of the crane is particularly important since both the operator and the machinery are threatened by the wind during operation of the crane. The gantry crane windproof system generally comprises a windproof early warning device, an emergency windproof braking device, a preventive windproof braking device and an end stop, and the windproof early warning device cannot be used.
According to different action modes and structures, the traditional windproof device is divided into a hydraulic spring rail clamping device, an electric hydraulic windproof iron-wedge and a wheel-side brake. The wheel-side brake rubs with the wheel through the friction plate, so that the crane can stop in time, and the wheel-side brake is the most important dynamic brake.
The wheel-side brake comprises a hydraulic wheel-side brake and an electric wheel-side brake. The hydraulic wheel-side brake needs to be externally connected with a hydraulic station and various control oil ways, and is rarely used at present due to the problems of oil leakage, easy damage, serious pollution and the like. At present, electro-hydraulic wheel brakes and electric wheel brakes are more applied. The electrohydraulic wheel-side brake controls the oil path and the valve body structure through the electromagnetic valve without being externally connected with a hydraulic station and various control oil paths and valve body structures, and has small occupied space and simple structure. The electric wheel-side brake adopts a structure that the motor drives the ball screw amplitude through gear reduction as a pushing device, so that the motor efficiency is improved, the braking force is large, and the action is accurate and rapid. And the phenomena of oil pipe, sealing element aging, hydraulic part abrasion and the like are avoided; no oil leakage (beneficial to environmental protection), no force, no jamming and other faults.
According to the installation requirement of the portal crane, a horizontal electric wheel-side brake is required.
Chinese patent CN201420261186.1 discloses a horizontal hydraulic wheel brake, which comprises a frame, wherein an upper brake arm, a lower brake arm and a pusher are arranged on the frame, friction plates are respectively arranged at the front end of the upper brake arm and the front end of the lower brake arm, a pull rod and a vertical lever are also arranged on the frame, the front end of the upper brake arm and the front end of the lower brake arm are in transmission connection through a front connecting mechanism capable of controlling the opening and closing of the upper brake arm and the lower brake arm, and the rear end of the upper brake arm and the rear end of the lower brake arm are connected through a rear connecting mechanism.
The device brakes in a hydraulic mode, needs to be externally connected with a hydraulic station and various control oil ways, has the problems of oil leakage, easy damage, serious pollution and the like, and is not suitable for braking of the portal crane.
Disclosure of Invention
In order to solve the technical problem, the horizontal wheel-side brake for the portal crane is provided.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the utility model provides a horizontal wheel limit stopper for gantry crane, includes mouth word support, friction disc and gear motor, still including: the screw rod moving assembly is arranged in the square support, the working end of the screw rod moving assembly can horizontally move along the radial direction of the wheel edge in a working state, the speed reducing motor is arranged on the square support, and the output shaft of the speed reducing motor is in transmission connection with one end of the input shaft of the screw rod moving assembly; the clamping jaw assembly is characterized in that an opening of the clamping jaw assembly is arranged on the outer side of the square support in the radial direction of the wheel edge and is horizontally arranged, the clamping jaw assembly comprises a driving rod which penetrates through the square support in the radial direction of the wheel edge, the driving rod is in transmission connection with the working end of the screw rod moving assembly, when the driving rod moves towards the axis of the wheel edge in the radial direction, the distance between the clamping jaws of the clamping jaw assembly is increased, and friction plates are arranged on two sides of the clamping jaws of the clamping jaw assembly; the reset spring is coaxially sleeved on the driving rod, and the gap of a clamping opening of the clamping jaw assembly is smaller than the diameter of the wheel edge when the speed reducing motor is in a non-driving state; and the two ends of the torsion spring are fixedly connected with the inner side of the square support and the circumferential surface of the input shaft of the screw rod moving assembly respectively.
Preferably, the screw rod moving assembly comprises: the two threaded rods are horizontally arranged in the square support in parallel in a rotating mode, one end of each threaded rod is in transmission connection with an output shaft of the speed reducing motor, the torsion spring is coaxially sleeved at the other end of each threaded rod, and the two ends of each torsion spring are fixedly connected with the circumferential surface of each threaded rod and the inner side of the square support respectively; the sliding frame is arranged in the square support in a sliding manner along the radial direction of the wheel edge, and a screw rod nut which is screwed with the coaxial thread of the threaded rod is arranged on the sliding frame; the transmission post is radially arranged on one side of the sliding frame along the wheel edge, and the other end of the transmission post is in transmission connection with the driving rod.
Preferably, the screw rod moving assembly further comprises: the same ends of the two threaded rods are in synchronous transmission connection through the synchronous chain; the first bevel gear and the second bevel gear are coaxially and fixedly arranged at one end of a threaded rod, the second bevel gear is coaxially and fixedly arranged on an output shaft of the speed reducing motor, and gear lines of the first bevel gear and the second bevel gear are vertical and are meshed with each other.
Preferably, the screw rod moving assembly further comprises a guide rail, and the sliding frame is arranged in the square support in a sliding mode along the wheel edge in the radial direction through the guide rail.
Preferably, the screw rod moving assembly further comprises a bearing, and two ends of the threaded rod are rotatably arranged in the square support through the bearing.
Preferably, the screw rod moving assembly further comprises a stabilizing frame, the stabilizing frame is fixedly arranged in the screw rod moving assembly along the wheel edge radial direction, the threaded rod is in running fit with the stabilizing frame, and the transmission column is in sliding fit with the stabilizing frame.
Preferably, the stabilizing frame and the mounting hole of the transmission column are internally and uniformly provided with a limiting strip along the axial direction, and the circumferential surface of the transmission column is provided with a limiting groove which is in sliding fit with the limiting strip along the axial direction.
Preferably, the screw rod moving assembly further comprises a fixed disc, the fixed disc is coaxially and fixedly arranged at the other end of the threaded rod, the torsional spring is coaxially sleeved on the threaded rod, and two ends of the torsional spring are fixedly connected with opposite ends of the torsional spring and the square support respectively.
Preferably, the gripper jaw assembly further comprises: the limiting piece is fixedly arranged at one end of the driving rod, one end of the limiting piece is fixedly connected with the working end of the screw rod moving assembly, the reset spring is coaxially sleeved on the driving rod, and two ends of the reset spring are respectively abutted against the limiting piece and the opposite end of the square support; the clamping device comprises a first connecting claw and a second connecting claw, wherein one end of the first connecting claw and one end of the second connecting claw are hinged with the outer side of the square support, the first connecting claw and the second connecting claw are symmetrical by a horizontal axial plane of a wheel edge, and clamping parts of the first connecting claw and the second connecting claw are opposite; the connecting piece is fixedly arranged at the other end of the driving rod and is positioned outside the square support; and two ends of the connecting rod are respectively hinged with the middle ends of the first connecting claw and the second connecting claw and two ends of the connecting piece in the vertical direction.
Preferably, the connecting piece is provided with a cleaning roller which is coaxial with the wheel edge and can rotate towards the wheel edge side.
Compared with the prior art, the invention has the following beneficial effects:
the wheel-side brake can automatically brake when power is off and can be horizontally installed on a portal crane, specifically, under the non-driving state of a speed reducing motor, a reset spring is not subjected to compression deformation, namely two ends of the reset spring abut against the opposite sides of a limiting part and a square support, so that a driving rod drives a connecting piece to deviate from a wheel-side axis, a first connecting claw and a second connecting claw are driven by a connecting rod to be clamped on the outer circumferential surface of a wheel side, the clamping gap of a clamping claw assembly is smaller than the diameter of the wheel side, a clamping opening of the clamping claw assembly can be clamped on the circumferential surface of the wheel side along the radial direction through a friction plate, and the wheel side cannot rotate, so that braking is realized; when the speed reducing motor is started, an output shaft of the speed reducing motor drives one end of an input shaft of the screw rod moving assembly to rotate, even if the output shaft drives the threaded rod to coaxially rotate in the square support, the torsional spring stores certain torsion force and deforms, the screw rod nut is coaxially screwed with the threaded rod, and the sliding frame is radially and slidably arranged in the square support along the wheel edge, so that the sliding frame can move in the square support, the transmission column can coaxially push the driving rod, the distance between clamping openings of the clamping jaw assembly is increased, the diameter of the clamping jaw assembly is larger than that of the wheel edge, and the wheel edge drives the portal crane to slide on the track; when the outage situation happens, the output shaft of the speed reducing motor cannot keep a rotating state, the torsion spring is subjected to reset deformation due to the structure of the torsion spring, so that the input shaft of the screw rod moving assembly reversely rotates, the working end of the screw rod moving assembly drives the driving rod to be radially far away from the wheel edge axis, the reset spring recovers deformation, the distance between the clamping openings of the clamping jaw assemblies is accelerated and reduced, the clamping jaws are clamped on the circumferential surface of the wheel edge, the wheel edge is locked, the portal crane is prevented from sliding on the rail, and the stability is improved.
Drawings
Figures 1 and 2 are perspective views of the present invention from two different perspectives;
FIG. 3 is a side view of the present invention;
FIG. 4 is a cross-sectional view at section D-D of FIG. 3;
FIG. 5 is a perspective sectional view at section D-D of FIG. 3;
FIG. 6 is an enlarged view of a portion of FIG. 4 at E;
FIG. 7 is an enlarged view of a portion of FIG. 4 at F;
FIG. 8 is a perspective view of a gripper jaw assembly of the present invention;
FIG. 9 is a perspective view of the threaded rod and torsion spring of the present invention;
fig. 10 is a front view of the present invention.
The reference numbers in the figures are:
a-a square support;
b-friction plate;
c-a reduction motor;
1-a screw rod moving assembly; 1 a-a threaded rod; 1 b-a carriage; 1b 1-feed screw nut; 1 c-a drive column; 1c 1-limit groove; 1 d-the synchronization chain; 1 e-a first bevel gear; 1 f-a second bevel gear; 1 g-guide rail; 1 h-bearing; 1 i-a stabilizer; 1i 1-stop bar; 1 j-fixed disk;
2-a gripper jaw assembly; 2 a-a drive rod; 2 b-a limit piece; 2 c-a first coupling claw; 2 d-a second coupling jaw; 2 e-a connector; 2e 1-cleaning roller; 2 f-connecting rod;
3-a return spring;
4-torsion spring.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Referring to fig. 5, the horizontal wheel-side brake for the gantry crane comprises a square support A, a friction plate B and a speed reducing motor C, and further comprises:
the lead screw moving assembly 1 is arranged in the square support A, the working end of the lead screw moving assembly 1 can horizontally move along the radial direction of a wheel edge in a working state, the speed reducing motor C is arranged on the square support A, and the output shaft of the speed reducing motor C is in transmission connection with one end of the input shaft of the lead screw moving assembly 1;
the clamping jaw component 2 is characterized in that an opening of the clamping jaw component 2 is arranged on the outer side of the square support A along the wheel edge in the radial direction and is horizontally arranged, the clamping jaw component 2 comprises a driving rod 2a which penetrates through the square support A along the wheel edge in the radial direction, the driving rod 2a is in transmission connection with the working end of the screw rod moving component 1, when the driving rod 2a moves towards the wheel edge axis along the radial direction, the distance between clamping jaws of the clamping jaw component 2 is increased, and friction plates B are arranged on two sides of a clamping jaw of the clamping jaw component 2;
the reset spring 3 is coaxially sleeved on the driving rod 2a, and the clearance of a clamping opening of the clamping jaw component 2 is smaller than the diameter of a wheel edge when the speed reducing motor C is in a non-driving state;
and the torsional spring 4 is coaxially sleeved at the other end of the input shaft of the screw rod moving assembly 1, and two ends of the torsional spring 4 are respectively fixedly connected with the inner side of the square support A and the circumferential surface of the input shaft of the screw rod moving assembly 1.
When the speed reducing motor C is not driven, the reset spring 3 is not compressed and deformed, namely, the clamping gap of the clamping jaw assembly 2 is smaller than the diameter of the wheel edge, so that the clamping opening of the clamping jaw assembly 2 can be radially clamped on the circumferential surface of the wheel edge through the friction plate B, and the wheel edge cannot rotate, thereby braking;
when the speed reducing motor C is started, an output shaft of the speed reducing motor C drives one end of an input shaft of the screw rod moving assembly 1 to rotate, the torsion spring 4 stores certain torsion force and deforms, the working end of the screw rod moving assembly 1 moves towards the wheel edge axis direction along the radial direction, so that the driving rod 2a in transmission connection with the working end of the screw rod moving assembly 1 moves towards the wheel edge direction along the radial direction, the reset spring 3 is compressed along the axial direction, the distance between the clamping openings of the clamping claw assemblies 2 is increased, the distance between the clamping openings of the clamping claw assemblies 2 is larger than the diameter of the wheel edge, and the portal crane can slide on the track;
when taking place the outage situation, gear motor C output shaft can't keep the rotation state, the deformation that resets takes place for torsional spring 4 because of its self structure, thereby make 1 input shaft antiport of lead screw removal subassembly, 1 work end drive actuating lever 2a of lead screw removal subassembly radially keeps away from the wheel limit axis, 3 the recovery deformation of reset spring, the centre gripping mouth interval of gripper jaw subassembly 2 reduces with higher speed, thereby the centre gripping is on the periphery on wheel limit, thereby lock dead wheel limit, prevent that portal crane from taking place to slide on the track, thereby improve stability.
As shown in fig. 4, the lead screw moving assembly 1 includes:
the two threaded rods 1a are arranged, the threaded rods 1a are horizontally arranged in the square support A in a parallel rotating mode, one end of each threaded rod 1a is in transmission connection with an output shaft of the speed reducing motor C, the torsion spring 4 is coaxially sleeved at the other end of each threaded rod 1a, and two ends of the torsion spring 4 are fixedly connected with the circumferential surface of the threaded rod 1a and the inner side of the square support A respectively;
the sliding frame 1b is arranged in the square support A in a sliding mode along the radial direction of the wheel edge, and a feed screw nut 1b1 which is coaxially screwed with the threaded rod 1a in a threaded mode is arranged on the sliding frame 1 b;
and the transmission column 1c is radially arranged on one side of the sliding frame 1b along the wheel edge, and the other end of the transmission column 1c is in transmission connection with the driving rod 2 a.
Gear motor C is under non-drive status, gripper jaw subassembly 2 is centre gripping braking state, when needs make the gantry crane move on the track, start gear motor C, make its output shaft drive threaded rod 1a coaxial rotation in a word support A, and screw-nut 1b1 is twisted with the coaxial screw of threaded rod 1a and is connect, and carriage 1b sets up in a word support A along the wheel side radial sliding, can make carriage 1b remove in a word support A promptly, thereby make transmission post 1C with the axial promotion actuating lever 2a, make 2 gripper jaw spacing increases of gripper jaw subassembly, thereby be greater than the diameter on wheel side, make the wheel side drive the gantry crane slide on the track.
As shown in fig. 4, the lead screw moving assembly 1 further includes:
the same ends of the two threaded rods 1a are in synchronous transmission connection through the synchronous chain 1 d;
the gear transmission mechanism comprises a first bevel gear 1e and a second bevel gear 1f, wherein the first bevel gear 1e is coaxially and fixedly arranged at one end of a threaded rod 1a, the second bevel gear 1f is coaxially and fixedly arranged on an output shaft of a speed reducing motor C, and the axes of the first bevel gear 1e and the second bevel gear 1f are vertical and are meshed with each other.
Two threaded rods 1a are connected with one another through synchronous chain 1d synchronous transmission, so that two threaded rods 1a are stably transmitted through a speed reducing motor C at the same time, the threaded rods 1a can drive the sliding frame 1b to slide along the wheel edge in a radial stable mode, the axes of the first bevel gear 1e and the second bevel gear 1f are perpendicular to each other and meshed with each other, and the speed reducing motor C is convenient to install on the door type motor.
As shown in fig. 4, the lead screw moving assembly 1 further includes a guide rail 1g, and the sliding frame 1b is arranged in the square support a through the guide rail 1g in a sliding manner along the radial direction of the wheel edge.
The sliding frame 1b is arranged in the square support A in a radial sliding mode along the wheel edge through the guide rail 1g, so that the sliding frame 1b is not prone to axially separating from the square support A along the wheel edge, and the stability of the device is improved.
As shown in fig. 7, the lead screw moving assembly 1 further includes a bearing 1h, and two ends of the threaded rod 1a are rotatably disposed in the square bracket a through the bearing 1 h.
Threaded rod 1a both ends are passed through bearing 1h and are rotated the setting in a word support A for threaded rod 1a can be through bearing 1h steady rotation in word support A, thereby improves the stability of stopper.
As shown in fig. 6, the screw rod moving assembly 1 further includes a stabilizing frame 1i, the stabilizing frame 1i is fixedly disposed in the screw rod moving assembly 1 along the wheel edge radial direction, the threaded rod 1a is rotationally matched with the stabilizing frame 1i, and the transmission column 1c is slidably matched with the stabilizing frame 1 i.
Through with steadying frame 1i along the radial fixed setting in lead screw removal subassembly 1 of wheel limit, and make threaded rod 1a and steadying frame 1i normal running fit, transmission post 1c and steadying frame 1i sliding fit to be convenient for support a mouthful word support A inside, make a word support A structure more stable, make when rotating threaded rod 1a or slip transmission post 1c, make steadying frame 1i stably improve the stability of structure.
As shown in fig. 6, the mounting holes of the stabilizing frame 1i and the transmission column 1c are uniformly distributed with a limiting strip 1i1 along the axial direction thereof, and the circumferential surface of the transmission column 1c is provided with a limiting groove 1c1 which is in sliding fit with the limiting strip 1i1 along the axial direction.
The mounting holes of the stabilizing frame 1i and the transmission column 1c are uniformly provided with a limiting strip 1i1 along the axial direction, and the circumferential surface of the transmission column 1c is provided with a limiting groove 1c1 which is matched with the limiting strip 1i1 in a sliding manner along the axial direction, so that when the limiting strip 1i1 and the limiting groove 1c1 slide along the axial direction, the transmission column 1c is not easy to rotate in the mounting hole of the stabilizing frame 1i, the stability of the structure is improved, and stable braking is facilitated.
As shown in fig. 7 and 9, the screw rod moving assembly 1 further includes a fixing plate 1j, the fixing plate 1j is coaxially and fixedly disposed at the other end of the threaded rod 1a, the torsion spring 4 is coaxially sleeved on the threaded rod 1a, and two ends of the torsion spring 4 are respectively fixedly connected to the torsion spring 4 and the opposite end of the square support a.
The fixed disk 1j is coaxially fixed at the other end of the threaded rod 1a, the torsion spring 4 is coaxially sleeved on the threaded rod 1a, two ends of the torsion spring 4 are respectively fixedly connected with opposite ends of the torsion spring 4 and the square support A, so that the torsion spring 4 is convenient to install, the torsion force generated by the threaded rod 1a is convenient to store by the torsion spring 4, the torsion spring 4 drives the threaded rod 1a to rotate reversely in a power-off state, and braking is convenient.
As shown in fig. 8, the gripper jaw assembly 2 further comprises:
the limiting piece 2b is fixedly arranged at one end of the driving rod 2a, one end of the limiting piece 2b is fixedly connected with the working end of the screw rod moving assembly 1, the reset spring 3 is coaxially sleeved on the driving rod 2a, and two ends of the reset spring 3 are respectively abutted against the limiting piece 2b and the opposite end of the square support A;
the first connecting claw 2c and the second connecting claw 2d are hinged to the outer side of the square support A, one ends of the first connecting claw 2c and the second connecting claw 2d are hinged to the outer side of the square support A, the first connecting claw 2c and the second connecting claw 2d are symmetrical with the horizontal axial plane of the wheel edge, and clamping parts of the first connecting claw 2c and the second connecting claw 2d are opposite;
The connecting piece 2e is fixedly arranged at the other end of the driving rod 2a and is positioned on the outer side of the square support A;
the connecting rod 2f, the connecting rod 2f both ends are articulated along vertical direction both ends with first even claw 2c, the second even claw 2d middle part and connecting piece 2e respectively.
When the driving rod 2a is pressed axially by the working end of the lead screw moving assembly 1, the limiting part 2b overcomes the elastic force of the reset spring 3 to drive the driving rod 2a to extend out of the square support A, namely, the connecting piece 2e drives the first connecting claw 2C and the second connecting claw 2d to extend out through the connecting rod 2f, namely, the distance between the clamping openings of the first connecting claw 2C and the first connecting claw 2C is larger than the diameter of the wheel edge, so that the wheel edge can slide on the track.
As shown in fig. 8, the link 2e is provided with a cleaning roller 2e1 rotatable coaxially with the hub side toward the hub side.
The connecting piece 2e is provided with a cleaning roller 2e1 which is coaxial with the wheel edge and can rotate towards the wheel edge side, when the distance between the clamping openings of the clamping claw assemblies 2 is larger than the diameter of the wheel edge, the connecting piece 2e is relatively close to the circumferential surface of the wheel edge, so that the cleaning roller 2e1 can be abutted against the circumferential surface of the wheel edge, when the wheel edge rotates on the track, the cleaning roller 2e1 can scrape off attachments on the circumferential surface of the wheel edge, and therefore the attachments cannot influence the braking effect during braking.
The working principle of the invention is as follows:
the device realizes the functions of the invention through the following steps, thereby solving the technical problems provided by the invention:
step one, under the non-driving state of a speed reducing motor C, a reset spring 3 is not compressed and deformed, namely two ends of the reset spring 3 abut against the opposite sides of a limiting piece 2B and a square support A, so that a driving rod 2a drives a connecting piece 2e to deviate from the axis of a wheel edge, and further a connecting rod 2f drives a first connecting claw 2C and a second connecting claw 2d to be clamped on the outer circumferential surface of the wheel edge, so that the clamping gap of a clamping claw assembly 2 is smaller than the diameter of the wheel edge, a clamping opening of the clamping claw assembly 2 can be clamped on the circumferential surface of the wheel edge along the radial direction through a friction plate B, and the wheel edge cannot rotate, so that braking is realized;
step two, when the speed reducing motor C is started, an output shaft of the speed reducing motor C drives one end of an input shaft of the screw rod moving assembly 1 to rotate, even if the output shaft drives the threaded rod 1a to coaxially rotate in the square support A, meanwhile, the torsion spring 4 stores certain torsion to deform, the screw rod nut 1b1 is screwed with the coaxial thread of the threaded rod 1a, and the sliding frame 1b is arranged in the square support A in a sliding mode along the radial direction of the wheel edge, so that the sliding frame 1b can move in the square support A, the transmission column 1C coaxially pushes the driving rod 2a, the distance between clamping openings of the clamping claw assemblies 2 is increased and is larger than the diameter of the wheel edge, and the wheel edge drives the portal crane to slide on the track;
And step three, when a power-off condition occurs, the output shaft of the speed reducing motor C cannot keep a rotating state, the torsion spring 4 is subjected to reset deformation due to the self structure, so that the input shaft of the screw rod moving assembly 1 reversely rotates, the working end of the screw rod moving assembly 1 drives the driving rod 2a to be radially far away from the wheel edge axis, the reset spring 3 recovers deformation, the distance between the clamping openings of the clamping jaw assemblies 2 is accelerated and reduced, the clamping jaws are clamped on the circumferential surface of the wheel edge, the wheel edge is locked, the portal crane is prevented from sliding on the track, and the stability is improved.
The foregoing shows and describes the general principles, principal features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a horizontal wheel limit stopper for gantry crane, includes square support (A), friction disc (B) and gear motor (C), its characterized in that still including:
Lead screw removes subassembly (1), and lead screw removes subassembly (1) sets up in mouth word support (A), and under the operating condition, the work end that the lead screw removed subassembly (1) can follow the radial horizontal migration in round of limit, and the lead screw removes the subassembly and includes:
two threaded rods (1 a), the threaded rods (1 a) are horizontally arranged in the square support (A) in parallel and rotatably, the speed reducing motor (C) is arranged on the square support (A), the output shaft of the speed reducing motor is in transmission connection with one end of the threaded rod (1 a),
the sliding frame (1 b) is arranged in the square support (A) in a sliding manner along the radial direction of the wheel edge, a screw rod nut (1 b 1) which is screwed with a coaxial thread of the threaded rod (1 a) is arranged on the sliding frame (1 b),
the transmission column (1 c) is arranged on one side of the sliding frame (1 b) along the wheel edge in the radial direction;
the opening of the clamping jaw assembly (2) is arranged on the outer side of the square support (A) along the radial direction of the wheel edge and horizontally, the clamping jaw assembly (2) comprises a driving rod (2 a) which penetrates through the square support (A) along the radial direction of the wheel edge, and the driving rod (2 a) is in transmission connection with the other end of the transmission column (1 c); when the driving rod (2 a) moves towards the wheel edge axis along the radial direction, the distance between the clamping openings of the clamping claw assemblies (2) is increased, and the friction plates (B) are arranged on two sides of the clamping openings of the clamping claw assemblies (2);
The reset spring (3) is coaxially sleeved on the driving rod (2 a), and the clearance of a clamping opening of the clamping jaw component (2) is smaller than the diameter of a wheel edge under the non-driving state of the speed reducing motor (C);
the torsion spring (4), the coaxial cover of torsion spring (4) is established at the threaded rod (1 a) other end, and torsion spring (4) both ends respectively with threaded rod (1 a) periphery and the inboard fixed connection of square support (A).
2. The horizontal wheel-side brake for gantry cranes of claim 1, wherein the screw moving assembly (1) further comprises:
the same ends of the two threaded rods (1 a) are synchronously connected through the synchronous chain (1 d) in a transmission way;
the gear transmission mechanism comprises a first bevel gear (1 e) and a second bevel gear (1 f), wherein the first bevel gear (1 e) is coaxially and fixedly arranged at one end of a threaded rod (1 a), the second bevel gear (1 f) is coaxially and fixedly arranged on an output shaft of a speed reducing motor (C), and the axes of the first bevel gear (1 e) and the second bevel gear (1 f) are vertical and are meshed with each other.
3. The horizontal wheel-side brake for the gantry crane according to claim 1, wherein the screw rod moving assembly (1) further comprises a guide rail (1 g), and the sliding frame (1 b) is arranged in the square bracket (A) in a sliding manner along the radial direction of the wheel side through the guide rail (1 g).
4. The horizontal rim brake for the gantry crane according to claim 1, wherein the screw rod moving assembly (1) further comprises a bearing (1 h), and two ends of the threaded rod (1 a) are rotatably arranged in the square bracket (A) through the bearing (1 h).
5. The horizontal wheel-side brake for the portal crane according to claim 1, wherein the screw rod moving assembly (1) further comprises a stabilizing frame (1 i), the stabilizing frame (1 i) is fixedly arranged in the screw rod moving assembly (1) along the wheel-side radial direction, the threaded rod (1 a) is in running fit with the stabilizing frame (1 i), and the transmission column (1 c) is in sliding fit with the stabilizing frame (1 i).
6. The horizontal wheelside brake for the gantry crane according to claim 5, wherein the mounting holes of the stabilizing frame (1 i) and the transmission column (1 c) are uniformly provided with a limiting strip (1 i 1) along the axial direction thereof, and the circumferential surface of the transmission column (1 c) is provided with a limiting groove (1 c 1) which is in sliding fit with the limiting strip (1 i 1) along the axial direction.
7. The horizontal wheel-side brake for the portal crane according to claim 1, wherein the screw rod moving assembly (1) further comprises a fixed disk (1 j), the fixed disk (1 j) is coaxially and fixedly arranged at the other end of the threaded rod (1 a), the torsion spring (4) is coaxially sleeved on the threaded rod (1 a), and two ends of the torsion spring (4) are respectively and fixedly connected with opposite ends of the torsion spring (4) and the square support (A).
8. Horizontal wheel-side brake for gantry cranes according to claim 1, characterized in that the gripper jaw assembly (2) further comprises:
the limiting piece (2 b) is fixedly arranged at one end of the driving rod (2 a), one end of the limiting piece (2 b) is fixedly connected with the working end of the screw rod moving assembly (1), the reset spring (3) is coaxially sleeved on the driving rod (2 a), and two ends of the reset spring (3) are respectively abutted against the limiting piece (2 b) and the opposite end of the square support (A);
one end of the first connecting claw (2 c) and one end of the second connecting claw (2 d) are hinged with the outer side of the square support (A), the first connecting claw (2 c) and the second connecting claw (2 d) are symmetrical with the horizontal axial plane of the wheel edge, and clamping parts of the first connecting claw (2 c) and the second connecting claw (2 d) are opposite;
the connecting piece (2 e) is fixedly arranged at the other end of the driving rod (2 a), and the connecting piece (2 e) is positioned on the outer side of the square support (A);
the two ends of the connecting rod (2 f) are respectively hinged with the middle ends of the first connecting claw (2 c) and the second connecting claw (2 d) and the two ends of the connecting piece (2 e) in the vertical direction.
9. Horizontal wheel-side brake for gantry cranes according to claim 8, characterized in that the attachment piece (2 e) is provided towards the wheel-side with a cleaning roller (2 e 1) coaxial with the wheel-side and rotatable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110243311.0A CN112963471B (en) | 2021-03-05 | 2021-03-05 | Horizontal wheel brake for gantry crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110243311.0A CN112963471B (en) | 2021-03-05 | 2021-03-05 | Horizontal wheel brake for gantry crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112963471A CN112963471A (en) | 2021-06-15 |
| CN112963471B true CN112963471B (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110243311.0A Active CN112963471B (en) | 2021-03-05 | 2021-03-05 | Horizontal wheel brake for gantry crane |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB593333A (en) * | 1945-06-14 | 1947-10-14 | Prec Developments Co Ltd | Improvements in magnetic brakes |
| CN203922573U (en) * | 2014-05-21 | 2014-11-05 | 焦作市银星制动器有限公司 | Horizontal hydraulic rim brake |
| CN111795086A (en) * | 2019-04-08 | 2020-10-20 | 湖南零陵恒远发电设备有限公司 | Speed limiting device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108860171A (en) * | 2018-05-02 | 2018-11-23 | 太原理工大学 | A kind of suspension apparatus and overhead trolley of overhead trolley |
-
2021
- 2021-03-05 CN CN202110243311.0A patent/CN112963471B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB593333A (en) * | 1945-06-14 | 1947-10-14 | Prec Developments Co Ltd | Improvements in magnetic brakes |
| CN203922573U (en) * | 2014-05-21 | 2014-11-05 | 焦作市银星制动器有限公司 | Horizontal hydraulic rim brake |
| CN111795086A (en) * | 2019-04-08 | 2020-10-20 | 湖南零陵恒远发电设备有限公司 | Speed limiting device |
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| Publication number | Publication date |
|---|---|
| CN112963471A (en) | 2021-06-15 |
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