CN208716692U - A kind of preventing gnawing rail running gear of gantry crane - Google Patents

Abstract

The utility model relates to a kind of preventing gnawing rail running gears of gantry crane.Including two groups of cart lower beams, portal frame is equipped in the top of cart lower beam；Two groups of saddle beams are equipped in the bottom of cart lower beam；Two groups of driving units are connected in the bottom of saddle beam；Unit of driving a vehicle includes equalizer bar and the two group wheel mechanisms affixed in its bottom；It further include driving motor；Wheel mechanism includes the shell with equalizer bar Joint, two groups of installation risers are connected in housing top medial surface, further include the shaft with installation riser rotation connection, be arranged with running wheel in shaft, running wheel can along shaft axial translation but can not rotating in a circumferential direction along shaft；It is equipped with spring in the two sides of running wheel, thrust ball bearing, the outboard race of thrust ball bearing and the end Joint of installation riser Joint, inboard race and spring, the other end and running wheel Joint of spring are equipped between spring and installation riser.The utility model can improve wheel gnawing rail phenomenon and run smoothly.

Description

A kind of preventing gnawing rail running gear of gantry crane

Technical field

The utility model belongs to the preventing gnawing rail walking dress of crane technical field more particularly to a kind of gantry crane It sets.

Background technique

Crane refers to more movement hoisting machineries of vertical-lift in a certain range and horizontal carrying heavy goods.Also known as day Vehicle, hanging, crane.Existing crane is by the suspension hook under mobile device by object suspension, dragon of the mobile device in crane It is mobile at the top of door frame, to realize the movement of lifting object.It is equipped with track disposed in parallel on ground, the bottom of portal frame is set Have can orbiting running gear.

Since hoisting machinery usually has a huge metal structure and more complicated mechanism, driving span is big, equipment from Great, longtime running of driving a vehicle, the depth of parallelism of two tracks can change, and cause driving to gnaw rail at runtime even stuck existing As affecting the service life of running gear.

Utility model content

The utility model is to solve technical problem present in well-known technique and provide a kind of structure design advantages of simple The preventing gnawing rail running gear of the gantry crane of wheel gnawing rail phenomenon can be improved, the utility model can be centainly can be in degree Prolong the service life.

The utility model is adopted the technical scheme that solve technical problem present in well-known technique: a kind of planer-type The preventing gnawing rail running gear of crane, including two groups of lateral and symmetrically arranged cart lower beams, in the top of cart lower beam Equipped with the portal frame with cart lower beam Joint described in two groups；Two groups of saddle beams, saddle beam are connected in the bottom of cart lower beam It is symmetrical arranged about cart lower beam；Two groups of driving units are connected in the bottom of saddle beam and driving unit is symmetrically set about saddle beam It sets；Driving unit include and the equalizer bar of saddle beam Joint and the two group wheel mechanisms affixed in the bottom of equalizer bar, wheel machine Structure is symmetrical arranged about equalizer bar；It further include the driving motor of drivable wheel mechanism operation；Wheel mechanism includes and equalizer bar The shell of the bottom opening of Joint is connected with two groups of longitudinally disposed installation risers in housing top medial surface, further includes cross Shaft to setting and with the rotation connection of installation riser described in two groups, coaxial line is arranged with running wheel, moving trolley in shaft Wheel can along shaft axial translation but can not rotating in a circumferential direction along shaft；It is all provided between the two sides and installation riser of running wheel There is the spring being set in outside shaft, thrust ball bearing, the outboard race of thrust ball bearing are equipped between spring and installation riser It is interference fitted with shaft clearance fit, inboard race and shaft, it is the outboard race of thrust ball bearing and installation riser Joint, interior The end Joint of side seat ring and spring, the other end of spring and the side Joint of running wheel.

The advantages and positive effects of the utility model are as follows: the utility model provides a kind of preventing gnawing rail of gantry crane Running gear, compared with prior art, the running wheel in the utility model can be along the axial movement of shaft, when between track When the depth of parallelism changes, running wheel can be made to slide in shaft with the offset direction of running track, be expert at The two sides installation spring of wheel is walked, when running wheel slides in shaft, the spring in glide direction is under pressure production Raw biggish compression, so as to form the push power to running wheel, when running track restores straight, running wheel Just the middle part that shaft can be restored under the thrust of the spring prevents shaft from becoming so that the pressure that shaft is subject to is equal Shape extends service life；One end of the spring and side of running wheel is affixed, the other end is connected with thrust ball bearing, can be with So that spring is changed into the rolling friction of thrust ball bearing with friction when running wheel rotates between spring and installation riser, Reduce the resistance that running wheel is subject in the process of running.

Preferably: the bottom of the installation riser described in two groups is connected with the bearing mounting base and axis for being equipped with rolling bearing It holds mounting base to be symmetrical arranged, shaft is rotatablely connected by rolling bearing and installation riser；It is affixed at the both ends of bearing mounting base There is end cap, sealing element is equipped between end cap and shaft；The outboard race and end cap Joint of thrust ball bearing.

Preferably: being equipped with external splines in the outer peripheral surface of shaft, offered on running wheel along its axially extending interior flower Key, the internal spline of running wheel and the external splines of shaft are slidably matched.

Preferably: spring and shaft transition fit.

Preferably: driving motor at least provided with two groups, every group of driving motor with one group of driving unit Joint；Driving electricity The output shaft of machine is connect by shaft coupling with one group of shaft coaxial line in unit of driving a vehicle.

Detailed description of the invention

Fig. 1 is the schematic view of the front view of the utility model；

Fig. 2 is the wheel mechanism diagrammatic side-view cross-sectional structural schematic diagram in the utility model.

In figure: 1, wheel mechanism；1-1, shell；1-2, bearing mounting base；1-3, rolling bearing；1-4, installation riser；1- 5, spring；1-6, thrust ball bearing；1-7, shaft；1-8, running wheel；2, equalizer bar；3, driving motor；4, saddle beam；5, cart Lower beam；6, portal frame.

Specific embodiment

For the invention, features and effects that can further appreciate that the utility model, hereby lifts following embodiment and be described in detail It is as follows:

Referring to Figure 1, the preventing gnawing rail running gear of the gantry crane of the utility model, including two groups laterally and symmetrical The cart lower beam 5 of setting is equipped with the portal frame with 5 Joint of cart lower beam described in two groups in the top of cart lower beam 5 6；Two groups of saddle beams 4 are connected in the bottom of cart lower beam 5, saddle beam 4 is symmetrical arranged about cart lower beam 5；At the bottom of saddle beam 4 Portion is connected with two groups of driving units and driving unit is symmetrical arranged about saddle beam 4；Driving unit includes flat with 4 Joint of saddle beam Balance beam 2 and the two group wheel mechanisms 1 affixed in the bottom of equalizer bar 2, wheel mechanism 1 are symmetrical arranged about equalizer bar 2；Further include The driving motor 3 that drivable wheel mechanism 1 is run；In driving motor 3 at least provided with two groups, every group of driving motor 3 with one group Driving unit Joint；The output shaft of driving motor 3 is connected by one group of shaft 1-7 coaxial line in shaft coupling and unit of driving a vehicle It connects.The utility model passes through the quantity for increasing wheel mechanism 1, so that crane is able to bear bigger load.

As shown in Fig. 2, wheel mechanism 1 includes the shell 1-1 with the bottom opening of 2 Joint of equalizer bar, pushed up in shell 1-1 Wall medial surface is connected with two groups of longitudinally disposed installation riser 1-4, further include laterally setting and with installation riser 1-4 described in two groups The shaft 1-7 of rotation connection.The bottom of the installation riser 1-4 described in two groups is connected with the bearing for being equipped with rolling bearing 1-3 Mounting base 1-2 and bearing mounting base 1-2 are symmetrical arranged, and shaft 1-7 is rotatablely connected by rolling bearing 1-3 and installation riser 1-4； It is connected with end cap at the both ends of bearing mounting base 1-2, sealing element is equipped between end cap and shaft 1-7.

Coaxial line is arranged with running wheel 1-8 on shaft 1-7, running wheel 1-8 can along shaft 1-7 axial translation but It can not rotating in a circumferential direction along shaft 1-7；It is specific to cash are as follows: external splines to be equipped in the outer peripheral surface of shaft 1-7, in running wheel 1-8 On offer along its axially extending internal spline, the external splines of the internal spline and shaft 1-7 of running wheel 1-8 is slidably matched.? Be equipped with the spring 1-5 being set in outside shaft 1-7 between the two sides and installation riser 1-4 of running wheel 1-8, spring 1-5 with turn Axis 1-7 transition fit.Thrust ball bearing 1-6, the outside of thrust ball bearing 1-6 are equipped between spring 1-5 and installation riser 1-4 Seat ring and shaft 1-7 clearance fit, inboard race and shaft 1-7 are interference fitted, the outboard race and bearing of thrust ball bearing 1-6 The end cap Joint of the end setting of mounting base 1-2.The inboard race of thrust ball bearing 1-6 and the end Joint of spring 1-5, The other end of spring 1-5 and the side of running wheel 1-8 offset.

Working principle: running wheel 1-8 drives entire running gear to travel in orbit, when the depth of parallelism hair between track Running wheel 1-8 slides on shaft 1-7 with the offset direction of running track when changing, due to shaft 1-7 and row Walk between wheel 1-8 for spline connect, running wheel 1-8 can along shaft 1-7 axial translation but can not be along the circumferential direction of shaft 1-7 Rotation, therefore the translational motion of running wheel 1-8 does not influence rotary course；When running wheel 1-8 slides on shaft 1-7 When, the spring 1-5 in glide direction, which is under pressure, generates biggish compression, so as to form the push to running wheel 1-8 Power, when running track restores straight, running wheel 1-8 just can be restored under the thrust of spring 1-5 to be turned The middle part of axis 1-7 prevents shaft 1-7 from deforming, extends service life so that the pressure that shaft 1-7 is subject to is equal；Spring 1-5 One end and running wheel 1-8 side is affixed, the other end is connected with thrust ball bearing 1-6, spring 1-5 can be made with row Friction when walking wheel 1-8 rotation between spring 1-5 and installation riser 1-4 is changed into the rolling friction of thrust ball bearing 1-6, subtracts The resistance that small running wheel 1-8 is subject in the process of running.

Claims (5)

1. the preventing gnawing rail running gear of a kind of gantry crane, it is characterized in that: including two groups of lateral and symmetrically arranged carts Lower beam (5) is equipped with the portal frame (6) with cart lower beam (5) Joint described in two groups in the top of cart lower beam (5)； Two groups of saddle beams (4) are connected in the bottom of cart lower beam (5), saddle beam (4) is symmetrical arranged about cart lower beam (5)；In saddle The bottom of beam (4) is connected with two groups of driving units and driving unit is symmetrical arranged about saddle beam (4)；Driving unit include and saddle beam (4) equalizer bar (2) of Joint and the two group wheel mechanisms (1) affixed in the bottom of equalizer bar (2), wheel mechanism (1) about Equalizer bar (2) is symmetrical arranged；It further include the driving motor (3) of drivable wheel mechanism (1) operation；

Wheel mechanism (1) includes the shell (1-1) with the bottom opening of equalizer bar (2) Joint, on the inside of shell (1-1) roof Face is connected with two groups of longitudinally disposed installation risers (1-4), further includes laterally setting and turns with installation riser (1-4) described in two groups The shaft (1-7) of dynamic connection, coaxial line is arranged with running wheel (1-8) on shaft (1-7), and running wheel (1-8) can be along turning The axial translation of axis (1-7) but can not rotating in a circumferential direction along shaft (1-7)；Two sides and installation riser in running wheel (1-8) It is equipped between (1-4) and is set in the spring (1-5) of shaft (1-7) outside, set between spring (1-5) and installation riser (1-4) Have thrust ball bearing (1-6), the outboard race and shaft (1-7) clearance fit, inboard race and shaft of thrust ball bearing (1-6) (1-7) interference fit, the outboard race and installation riser (1-4) Joint, inboard race and spring of thrust ball bearing (1-6) The end Joint of (1-5), the other end of spring (1-5) and the side Joint of running wheel (1-8).

2. the preventing gnawing rail running gear of gantry crane as described in claim 1, it is characterized in that: the installation described in two groups is vertical The bottom of plate (1-4) is connected with the bearing mounting base (1-2) for being equipped with rolling bearing (1-3) and bearing mounting base (1-2) is right Claim setting, shaft (1-7) is rotatablely connected by rolling bearing (1-3) and installation riser (1-4)；In bearing mounting base (1-2) Both ends are connected with end cap, and sealing element is equipped between end cap and shaft (1-7)；The outboard race of thrust ball bearing (1-6) with End cap Joint.

3. the preventing gnawing rail running gear of gantry crane as described in claim 1, it is characterized in that: in the outer of shaft (1-7) Circumferential surface is equipped with external splines, is offered on running wheel (1-8) along its axially extending internal spline, running wheel (1-8) it is interior The external splines of spline and shaft (1-7) is slidably matched.

4. the preventing gnawing rail running gear of gantry crane as described in claim 1, it is characterized in that: spring (1-5) and shaft (1-7) transition fit.

5. the preventing gnawing rail running gear of gantry crane as described in claim 1, it is characterized in that: driving motor (3) is at least Equipped with two groups, every group of driving motor (3) with one group of driving unit Joint；The output shaft of driving motor (3) passes through shaft coupling It is connect with one group of shaft (1-7) coaxial line in driving unit.