CN209632046U - Heavy dies transport double-U-shaped trolley and fast replacement system - Google Patents

Heavy dies transport double-U-shaped trolley and fast replacement system Download PDF

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Publication number
CN209632046U
CN209632046U CN201822113562.3U CN201822113562U CN209632046U CN 209632046 U CN209632046 U CN 209632046U CN 201822113562 U CN201822113562 U CN 201822113562U CN 209632046 U CN209632046 U CN 209632046U
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trolley
shaped trolley
shaped
double
mold
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郭玉玺
张利
陈海山
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NANJING DEVELOP HIGH-END MANUFACTURING Co Ltd
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NANJING DEVELOP HIGH-END MANUFACTURING Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The utility model discloses heavy dies to transport double-U-shaped trolley and fast replacement system, the double-U-shaped trolley includes two U-shaped trolleies connected by several dumpling pin devices, each U-shaped trolley is mounted on several wheels, wherein at least having pair of wheels is adhesion wheel, by variable-frequency motor-gear assembly driving operation, stroke control is carried out by encoder;Each U-shaped trolley is provided with hydraulic power unit, mold jacking short stroke hydraulic cylinder and taper pin positioning device for use;The fast replacement system includes the longitudinal rail assemblies being arranged in below double-U-shaped trolley, the orthogonal cross track of several groups is provided on the long rails, the cross track extends respectively into mold assembly platform position, several preheating furnace positions and hydraulic seat in the plane, double-U-shaped trolley can be made to carry the heavy dies of 100t or more longitudinal automatic transportation and automatic loading and unloading before each corresponding position, accurate positioning, handling are reliable, and replacement is quick, manual operation labor intensity is reduced, efficiency is improved.

Description

Heavy dies transport double-U-shaped trolley and fast replacement system
Technical field
The utility model relates to heavy dies to transport double-U-shaped trolley and fast replacement system, belong to metal forming liquid Technical field of pressing machine.
Background technique
The mold of large-scale stamp forging hydraulic press or multidirectional double acting hydraulic extrusion press is the tool for shaping precision workpiece, is into The shape of shape metal material and a kind of processing for changing its mechanical property are known as the title of " industry is female ".When work, need first by mould Tool is preheating to certain temperature, then, the metal material of heating is put into wherein, die forging or extrusion molding are carried out.
Simplest die forging is up or down monolithic mold with mold, and complicated is then sectional die, or includes punching Head and mandril.Multidirectional double acting extrusion die is then increasingly complex, when vertical molding, other than up or down vertical mold, also includes Lateral extrusion mold and horizontal perforated die;When level molding, other than left or right lateral extrusion mold, also squeezed comprising vertical Compression mould and vertical perforated die.Therefore, the assembly of mold, preheating and replacement operation are put forward higher requirements.
Currently, the dress of the mold of large-scale stamp forging hydraulic press/to tear open be manual mode of operation by means of suspender mostly, mold is pre- Heat is usually to carry out after installing in machine, is heated to red heat by manually utilizing the preheating of flame heating method, or by one piece Bloom is placed between upper/lower die and preheats;Some preheats in the preheating furnace outside machine, is hung in mold using driving lifting method In mobile work platform, by manually installed;Also some transports mold using electric flatbed tricycle, but mold preheating and lifting are still by driving It carries out, has a single function, be manually operated, efficiency is very low.The assembly of these molds, preheating and substitute mode are all relatively backward, preheating Temperature is very uneven, and die change fills/tear open large labor intensity, low efficiency, and the large-scale die forging that cannot be adapted to scale is continuously given birth to The productivity requirement of producing line less adapts to preheating and quick-replaceable requirement that weight reaches the heavy dies of 100t or more.For The multidirectional double acting Compound Extrusion hydraulic press of large size of small mount, multi items vertically and horizontally double acting mold while replace, there are no elder generations Example can be followed.
Utility model content
To solve the above problems, the utility model discloses a kind of double-U-shaped trolley of heavy dies transport and fastly Fast replacement system, specific technical solution are as follows:
Heavy dies transport double-U-shaped trolley, the rail heavy duty trolley including two U-shaped lead frame structures, respectively 1# Parking stall trolley and the parking stall 2# trolley, maximum load-carrying capacity are respectively 120t.Two U-shaped trolleies are connected by several dumpling pin devices One entirety in m shape.
Several wheels are mounted below each U-shaped trolley, the rolling-operation on corresponding track.Two U-shaped trolleies All wheels at least pair of wheels be adhesion wheel, connect with motor-gear transmission device, other are then from motor-car Wheel.
Each U-shaped trolley is provided with hydraulic power unit, several molds on corresponding U-shaped trolley is driven to jack short row Journey hydraulic cylinder and parking stall positioning hydraulic cylinders.
Each U-shaped trolley is respectively provided with there are four mold jacking short stroke hydraulic cylinder, is used for die center, jacking and holding.
Each U-shaped trolley is provided with taper pin positioning device for use, is determined by mold jacking short stroke hydraulic cylinder driving cone pin Position device extend vertically down, be inserted into be fixed on track foundation frame in the matched positioning orifice plate of taper pin positioning device for use, The machinery positioning before hydraulic press, preheating furnace and mold assembling position is operated in for corresponding parking stall.
Each U-shaped trolley is mounted on two two-wheel edge that diameter is 450-630mm and is oriented to heavily loaded adhesion wheel and two Heavily loaded driven wheel, is respectively connected to gear-box by a synchronizing shaft, and U-shaped trolley is driven using the motor-gear of frequency control The direct wheel drive of device and self-propelled operation.
It is coaxially installed with encoder with motor-gear transmission device, the stroke for double-U-shaped trolley controls, can be hydraulic It is automatically positioned before machine, preheating furnace and mold assembling position.
The hydraulic power unit includes high-pressure pump, fuel tank, valve, part flow arrangement, filter, pipeline, the hose of compact With nipple and air cleaner, part flow arrangement keeps the jacking short stroke hydraulic cylinder of four molds on each U-shaped trolley same Step movement.
When hydraulic cylinder is in extreme lower position, mold assembly platform, furnace bottom and mobile station either carry mold or sky Load can free in and out the parking stall 1# and the parking stall 2#, when hydraulic cylinder is in extreme higher position, can jack up mold, in favor of mold Assembly platform, furnace bottom and mobile station exit the corresponding parking stall 1# or the parking stall 2#, when hydraulic cylinder heads on mold from extreme higher position backhaul To during extreme lower position, mold can be unloaded in mold assembly platform, furnace bottom or mobile station, it is only flat in mold assembling Under platform, furnace bottom and the equal exit criteria of mobile station, double-U-shaped trolley just can energy free-running operation in orbit.
At least one described U-shaped trolley is provided with power supplier and electric control gear, and the power supplier includes Power switch cabinet, cable drag chain device;The electric control gear is arranged in the control cabinet of U-shaped trolley, the behaviour with forging operation room Make platform and wirelessly or non-wirelessly connected with vehicle controller, is operated by the station of operating room and with vehicle controller.
The left and right ends of U-shaped trolley are also equipped with the orbital plane cleaning device of limit journey protective device and spinning.
The fast replacement system of heavy dies further includes being arranged below double-U-shaped trolley including above-mentioned double-U-shaped trolley 2 longitudinal rail assemblies;Longitudinal rail assemblies include track foundation frame, track, rail pressing plate, washer and bolt, track end Portion's elastic buffer, and be fixed on track foundation frame and the № 1 and the matched location hole of 2 cone pin of № on double-U-shaped trolley Plate.
The orthogonal cross track of several groups is provided on long rails, which extends respectively into mold assembling Platform position, several preheating furnace positions and hydraulic seat in the plane are respectively used to handling and axial transport of the mold in each corresponding position;It is longitudinal The both ends length of track should all be more than the length of at least one U-shaped trolley on the cross track of respective end, it is ensured that double-U-shaped trolley Two parking stalls can be docked with cross track;The both ends of the long rails are provided with mechanical stop limiter, machinery limit Position device and stroke control protective unit cooperate, and can prevent double-U-shaped trolley from slipping from long rails.
The heavy dies quick change method of multidirectional double acting hydraulic extrusion press, the quick change method are based on quick-replaceable system System, specifically includes the following steps:
Step 1: assembly mold: assembling position in mold, by manually mold is assembled on platform, the platform is by motor gear Device driving, runs to the center of the parking stall double-U-shaped trolley 1# before having been located at mold assembling position, and is automatically positioned;By 1# Parking stall jacking apparatus jacks up the mold on platform, and then, platform assembles position back to mold by the driving of motor gear device;
Step 2: transport mold: carrying the parking stall double-U-shaped trolley 1# of mold, under walking system driving, runs to any It is automatically positioned before preheating furnace;The furnace bottom of preheating furnace is driven by motor gear device, runs to the parking stall double-U-shaped trolley 1# center die Lower section, and be automatically positioned, the parking stall 1# jacking apparatus drops to mold on furnace bottom, and then, furnace bottom carries mold by motor tooth Back to automatic positioning in preheating furnace, fire door, which is closed, starts preheated mold for wheel apparatus driving;
Step 3: after mold is preheating to set temperature in preheating furnace, furnace bottom carries mold and is driven by motor gear device, The parking stall the double-U-shaped trolley 1# center before having been located at preheating furnace is run to, and is automatically positioned, by the parking stall 1# jacking apparatus by mould Tool jacks up, and then, furnace bottom is returned in preheating furnace by the driving of motor gear device;
Step 4: the parking stall 1# of double-U-shaped trolley carries the mold after preheating, under walking system driving, runs the parking stall 2# It is automatically positioned before to hydraulic press;
Step 5: the horizontal or vertical mold that hydraulic press will be replaced is in setting position, the automatic clamping device point of mold Not Song Kai mold, mobile station clamping device unclamps mobile station, and mobile station rises automatically, driven by oil motor, run to double-U-shaped The parking stall trolley 2# center, and be automatically positioned, replaced mold is jacked up by the parking stall 2# jacking apparatus, then, mobile station exists Oil motor driving is lower to return to hydraulic press center;
Step 6: the parking stall 2# of double-U-shaped trolley carries replaced mold, under walking system driving, makes to carry preheating It before the parking stall 1# of mold afterwards runs to hydraulic press, and is automatically positioned, mobile station is driven by oil motor, runs to double-U-shaped trolley The lower section of the parking stall 1# center die, and be automatically positioned, the mold after preheating is dropped in mobile station by the parking stall 1# jacking apparatus, Then, mobile station carries the mold after preheating under oil motor driving back to hydraulic press center;
Step 7: carrying the parking stall double-U-shaped trolley 2# of replaced mold, under walking system driving, run to any Before platform preheating furnace, need preheating furnace furnace bottom for mold and transport furnace inside holding back, to use next time, or runs to mold assembling position Before, there is pedestal to be assembled to transport mold the dismantling of back assembling position;
Step 8: mobile station carries the mold after preheating at hydraulic press center, and after being positioned by key, by the folder in lower beam Tight device is fixed and is clamped on lower bolster, and then, the automatic clamping device of each corresponding mechanism is clamped respectively respectively by program Mold, so far complete mold installation and quick-replaceable.
The beneficial effects of the utility model are:
The heavy dies of the multidirectional double acting hydraulic extrusion press of the utility model transport double-U-shaped trolley and fast replacement system, The phloem-xylem transport of the heavy dies of 100t or more can be achieved, and can be automatic before hydraulic seat in the plane, preheating furnace position and mold assemble position It is accurately positioned, automatic reliable handling mold realizes new and old two mold in the quick-replaceable of hydraulic press, in the fast of die preheating furnace Quick-mounting is come out of the stove, and is assembled position quick despatch in mold, is reduced manual operation labor intensity, improve efficiency.
Detailed description of the invention
Fig. 1 is the double-U-shaped vehicle structure schematic diagram of the utility model,
Wherein: Fig. 1 (a) is the front view of double-U-shaped trolley,
Fig. 1 (b) is the top view of double-U-shaped trolley,
Reference signs list: 311-1#U type parking stalls, the U-shaped parking stall 312-2#, 313-dumpling pin devices, 314-gears Case, 315-variable-frequency motors-gear assembly, 316-hydraulic power units, 317-molds jack short stroke hydraulic cylinder, 318-taper pin positioning device for use, 319-power suppliers, 320-with vehicle controller, and 321-strokes control encoder dress It sets;
Fig. 2 is the fast replacement system top view of the utility model,
Reference signs list: 1-mold automatic clamping device, 2-mold mobile station apparatus, the transport of 3-molds are double-U-shaped small Vehicle,
4-die preheating furnace bottom devices, 5-mold assembly platforms, the longitudinal rail assemblies of 6-double-U-shaped trolleies.
Specific embodiment
With reference to the accompanying drawings and detailed description, the utility model is furtherd elucidate.It should be understood that following specific embodiment parties Formula is merely to illustrate the utility model rather than limitation the scope of the utility model.
Fig. 1 is the double-U-shaped vehicle structure schematic diagram of the utility model, in conjunction with attached drawing as it can be seen that this double-U-shaped trolley is 2 U-shaped The rail heavy duty trolley of lead frame structure, including two parking stalls, the respectively parking stall 1# and the parking stall 2#, maximum load-carrying capacity are respectively 120t connects into the entirety in m shape by dumpling pin device.
Each U-shaped trolley equipped with 2 two-wheel edge that diameter is 450-630mm be oriented to heavily loaded adhesion wheel and 2 heavy duties from Motor car wheel is respectively connected to gear-box by 1 synchronizing shaft, using the direct wheel drive of motor-gear transmission device of frequency control It is run with self-propelled.It is coaxially installed with encoder with motor-gear transmission device, the stroke for double-U-shaped trolley controls, can It is automatically positioned before hydraulic press, preheating furnace and mold assembling position.
Each U-shaped trolley carries 1 set of hydraulic power unit, high-pressure pump, fuel tank comprising compact, valve, part flow arrangement, mistake Filter, pipeline, hose and nipple and air cleaner, for the jacking of mold and the machinery positioning of parking stall.
Each U-shaped small car is provided with 4 mold jacking short stroke hydraulic cylinders, moves synchronously it by part flow arrangement, For die center, jacking and holding.When trolley positioning short stroke hydraulic cylinder is in extreme lower position, mold assembly platform, furnace Bottom or mobile station, which either carry mold or zero load, can free in and out the parking stall 1# or 2#;When trolley positions short stroke liquid When cylinder pressure is in extreme higher position, mold can be jacked up, so that mold assembly platform, furnace bottom or mobile station exit 1# or 2# Parking stall;It, can be by mold during trolley positioning short stroke hydraulic cylinder heads on mold from extreme higher position backhaul to extreme lower position It unloads in mold assembly platform, furnace bottom or mobile station;Only in mold assembly platform, furnace bottom and the equal exit criteria of mobile station Under, double-U-shaped trolley just can longitudinal free-running operation.
Each U-shaped trolley is provided with 1 set of taper pin positioning device for use, drives cone pin by trolley positioning short stroke hydraulic cylinder It extends vertically down, is inserted into and is fixed on track foundation frame in the matched positioning orifice plate of cone pin, be used for corresponding parking stall Operate in the machinery positioning before hydraulic press, preheating furnace and mold assembling position.
Double-U-shaped trolley has 1 set of power supplier and 1 set of electric control gear, overhead comprising 1 power switch cabinet and 1 Cable drag chain device;Electric control gear is arranged in the control cabinet of trolley, with the station of forging operation room and with vehicle controller It wirelessly or non-wirelessly connects, and can be operated by the station of forging operation room and with vehicle controller.
The two sides of double-U-shaped trolley are also equipped with the orbital plane cleaning device of limit journey protective device and spinning.
2 longitudinal rail assemblies are provided with below double-U-shaped trolley, include track foundation frame, track, rail pressing plate, washer With bolt, rail end elastic buffer, and it is fixed on track foundation frame and 2 cone pin of № 1 and № on double-U-shaped trolley Matched positioning orifice plate.
The orthogonal cross track of several groups is provided on long rails, which extends respectively into set of molds Assembling platform position, several preheating furnace positions and hydraulic seat in the plane are respectively used to handling and axial transport of the mold in each corresponding position.
The both ends length of the long rails should all be more than the length of at least one U-shaped trolley on the cross track of respective end Degree, it is ensured that two parking stalls of double-U-shaped trolley can be docked with cross track.
The both ends of the long rails are provided with mechanical stop limiter.Mechanical stop limiter and stroke control protective unit Cooperation, can prevent double-U-shaped trolley from slipping from long rails.
The heavy dies quick change method of multidirectional double acting hydraulic extrusion press, the quick change method are based on quick-replaceable system System, specifically includes the following steps:
Step 1: assembly mold: assembling position in mold, by manually mold is assembled on platform, the platform is by motor gear Device driving, runs to the center of the parking stall double-U-shaped trolley 1# before having been located at mold assembling position, and is automatically positioned;By 1# Parking stall jacking apparatus jacks up the mold on platform, and then, platform assembles position back to mold by the driving of motor gear device;
Step 2: transport mold: carrying the parking stall double-U-shaped trolley 1# of mold, under walking system driving, runs to any It is automatically positioned before preheating furnace;The furnace bottom of preheating furnace is driven by motor gear device, runs to the parking stall double-U-shaped trolley 1# center die Lower section, and be automatically positioned, the parking stall 1# jacking apparatus drops to mold on furnace bottom, and then, furnace bottom carries mold by motor tooth Back to automatic positioning in preheating furnace, fire door, which is closed, starts preheated mold for wheel apparatus driving;
Step 3: after mold is preheating to set temperature in preheating furnace, furnace bottom carries mold and is driven by motor gear device, The parking stall the double-U-shaped trolley 1# center before having been located at preheating furnace is run to, and is automatically positioned, by the parking stall 1# jacking apparatus by mould Tool jacks up, and then, furnace bottom is returned in preheating furnace by the driving of motor gear device;
Step 4: the parking stall 1# of double-U-shaped trolley carries the mold after preheating, under walking system driving, runs the parking stall 2# It is automatically positioned before to hydraulic press;
Step 5: the horizontal or vertical mold that hydraulic press will be replaced is in setting position, the automatic clamping device point of mold Not Song Kai mold, mobile station clamping device unclamps mobile station, and mobile station rises automatically, driven by oil motor, run to double-U-shaped The parking stall trolley 2# center, and be automatically positioned, replaced mold is jacked up by the parking stall 2# jacking apparatus, then, mobile station exists Oil motor driving is lower to return to hydraulic press center;
Step 6: the parking stall 2# of double-U-shaped trolley carries replaced mold, under walking system driving, makes to carry preheating It before the parking stall 1# of mold afterwards runs to hydraulic press, and is automatically positioned, mobile station is driven by oil motor, runs to double-U-shaped trolley The lower section of the parking stall 1# center die, and be automatically positioned, the mold after preheating is dropped in mobile station by the parking stall 1# jacking apparatus, Then, mobile station carries the mold after preheating under oil motor driving back to hydraulic press center;
Step 7: carrying the parking stall double-U-shaped trolley 2# of replaced mold, under walking system driving, run to any Before platform preheating furnace, need preheating furnace furnace bottom for mold and transport furnace inside holding back, to use next time, or runs to mold assembling position Before, there is pedestal to be assembled to transport mold the dismantling of back assembling position;
Step 8: mobile station carries the mold after preheating at hydraulic press center, and after being positioned by key, by the folder in lower beam Tight device is fixed and is clamped on lower bolster, and then, the automatic clamping device of each corresponding mechanism is clamped respectively respectively by program Mold, so far complete mold installation and quick-replaceable.
Technological means disclosed in the utility model is not limited to the technical means disclosed in the above technical means, also Including technical solution consisting of any combination of the above technical features.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims Property range.

Claims (5)

1. heavy dies transport double-U-shaped trolley, it is characterised in that the rail heavy duty trolley including two U-shaped lead frame structures, The respectively parking stall 1# trolley and the parking stall 2# trolley, two U-shaped trolleies connect into one in m shape by several dumpling pin devices It is whole;
Several wheels are mounted below each U-shaped trolley, the rolling-operation on corresponding track, the institute of two U-shaped trolleies Have in wheel at least that pair of wheels is adhesion wheel, is connect with motor-gear transmission device, other are then driven wheel;
Each U-shaped trolley is provided with hydraulic power unit, several molds on corresponding U-shaped trolley is driven to jack short stroke liquid Cylinder pressure and parking stall positioning hydraulic cylinders;
Each U-shaped trolley is respectively provided with there are four mold jacking short stroke hydraulic cylinder, is used for die center, jacking and holding;
Each U-shaped trolley is provided with taper pin positioning device for use, by trolley positioning short stroke hydraulic cylinder driving taper finger setting dress It sets and extends vertically down, be inserted into and be fixed on track foundation frame in the matched positioning orifice plate of taper pin positioning device for use, be used for Corresponding parking stall operates in the machinery positioning before hydraulic press, preheating furnace and mold assembling position.
2. heavy dies according to claim 1 transport double-U-shaped trolley, it is characterised in that each U-shaped trolley is mounted on Two two-wheel edge are oriented to heavily loaded adhesion wheel and two heavily loaded driven wheels, are respectively connected to gear-box by a synchronizing shaft, U-shaped Trolley is run using the direct wheel drive of motor-gear transmission device and self-propelled of frequency control;
It is coaxially installed with encoder with motor-gear transmission device, the stroke for double-U-shaped trolley controls, can be in hydraulic press, pre- It is automatically positioned before hot stove and mold assembling position.
3. heavy dies according to claim 1 transport double-U-shaped trolley, it is characterised in that the hydraulic power unit includes High-pressure pump, fuel tank, valve, part flow arrangement, filter, pipeline, hose and the nipple and air cleaner of compact,
The part flow arrangement moves synchronously the jacking short stroke hydraulic cylinder of four molds on each U-shaped trolley.
4. heavy dies according to claim 1 transport double-U-shaped trolley, it is characterised in that at least one described U-shaped trolley It is provided with power supplier and electric control gear, the power supplier includes power switch cabinet, cable drag chain device, described Electric control gear is arranged in the control cabinet of U-shaped trolley, wirelessly or non-wirelessly connects with the station of forging operation room and with vehicle controller It connects, is operated by the station of operating room and with vehicle controller;
The left and right ends of U-shaped trolley are also equipped with the orbital plane cleaning device of limit journey protective device and spinning.
5. the fast replacement system of heavy dies, it is characterised in that including double-U-shaped trolley described in any of the above-described claim, also Including 2 longitudinal rail assemblies below double-U-shaped trolley are arranged in;
The longitudinal rail assemblies include track foundation frame, track, rail pressing plate, washer and bolt, rail end elastic buffer Device, and be fixed on track foundation frame and the matched positioning orifice plate of two cone pins on double-U-shaped trolley;
The orthogonal cross track of several groups is provided on the long rails, which extends respectively into mold assembling Platform position, several preheating furnace positions and hydraulic seat in the plane are respectively used to handling and axial transport of the mold in each corresponding position;
The both ends length of the long rails should all be more than the length of at least one U-shaped trolley on the cross track of respective end, Ensure that two parking stalls of double-U-shaped trolley can be docked with cross track;
The both ends of the long rails are provided with mechanical stop limiter, and mechanical stop limiter is matched with stroke control protective unit It closes, can prevent double-U-shaped trolley from slipping from long rails.
CN201822113562.3U 2018-12-17 2018-12-17 Heavy dies transport double-U-shaped trolley and fast replacement system Active CN209632046U (en)

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Application Number Priority Date Filing Date Title
CN201822113562.3U CN209632046U (en) 2018-12-17 2018-12-17 Heavy dies transport double-U-shaped trolley and fast replacement system

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109530597A (en) * 2018-12-17 2019-03-29 南京迪威尔高端制造股份有限公司 Heavy dies transport double-U-shaped trolley and fast replacement system and method
CN112896209A (en) * 2020-12-24 2021-06-04 沈枭 Heavy cargo bucket compartment traction and protection device based on field of high-speed heavy-load train

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109530597A (en) * 2018-12-17 2019-03-29 南京迪威尔高端制造股份有限公司 Heavy dies transport double-U-shaped trolley and fast replacement system and method
CN109530597B (en) * 2018-12-17 2023-12-19 南京迪威尔高端制造股份有限公司 Heavy-duty die transportation double-U-shaped trolley and quick replacement system and method
CN112896209A (en) * 2020-12-24 2021-06-04 沈枭 Heavy cargo bucket compartment traction and protection device based on field of high-speed heavy-load train

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