CN219565050U - Transfer trolley for short-distance transportation of crawler excavator - Google Patents
Transfer trolley for short-distance transportation of crawler excavator Download PDFInfo
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- CN219565050U CN219565050U CN202320379053.3U CN202320379053U CN219565050U CN 219565050 U CN219565050 U CN 219565050U CN 202320379053 U CN202320379053 U CN 202320379053U CN 219565050 U CN219565050 U CN 219565050U
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Abstract
The utility model relates to a transfer vehicle for short-distance transportation of a crawler excavator, which comprises a vehicle body, rubber tires, half shafts, pedals, a connecting rod mechanism and a braking system, wherein the vehicle body is provided with a plurality of wheels; the braking system is a band-type brake drum brake; the transfer trolley is provided with an automatic braking mechanism, and the automatic braking mechanism adopts a band-type brake drum type brake with a brake drum and a brake shoe matched with each other, so that the transfer trolley is large in braking force, not easy to damage, stable in work and more suitable for transferring of medium-sized and large-sized track excavators.
Description
Technical Field
The utility model relates to the technical field of crawler-type mechanical transportation, in particular to a transportation vehicle for short-distance transportation of a crawler-type excavator.
Background
An excavator is also called an excavating machine or an excavator, and is an earth moving machine which excavates materials higher or lower than a carrying surface by a bucket and loads the materials into a transport vehicle or discharges the materials to a storage yard. The materials excavated by the excavator are mainly soil, coal, silt and soil and rock after pre-loosening. At present, an excavator has become one of the most important engineering machines in engineering construction.
Conventional excavator structures include power units, work units, swing mechanisms, steering mechanisms, transmission mechanisms, running mechanisms, auxiliary facilities, and the like. The chassis is composed of crawler frame and running system, which can support the weight of excavator and transform the power transmitted by driving wheel into traction force to realize running of whole machine.
The crawler excavator is usually transported to a construction site by a flat trailer, namely long-distance transportation is needed, and the transportation cost of the flat trailer is higher when the crawler excavator is transported in a short distance or is transported to a transition place, and the crawler excavator is used for walking by the crawler excavator to be paved with rubber plates to prevent the pavement from being damaged. The crawler excavator has a slower running speed (3-5 km/h), and the rubber plate is paved more wastefully in time, manpower and material resources.
The Chinese patent application with application publication number 104176149A discloses an excavator transportation trailer truck, wherein a steel wire mesh bearing solid tire is arranged at one end of a crawler belt of the excavator, and a steel plate stamping and welding integrated bracket is arranged between the steel wire mesh bearing solid tire. The wheels are arranged on the track, and the engineering transport vehicle is used for transporting the excavator, so that the excavator can move faster and is safer, the installation is convenient, and a special transport truck or other equipment for the excavator is not required to be added. However, because the excavator is not provided with a brake system, the excavator is easy to move in the process of getting on the excavator in a aligned mode, and the excavator is not convenient to use.
The Chinese patent application with the application publication number of CN114379446A discloses a crawler-type excavator transport wheel pulley, which comprises a vehicle body platform, a compression bar locking mechanism, a hub connecting seat and a travelling wheel; the locking is realized through the compression bar locking mechanism, so that the running wheel is limited to rotate; after the crawler excavator is pressed on the car body platform, the pressure rod locking mechanism is driven to move through pressure, unlocking is achieved, and then the travelling wheel can rotate. The self-locking mechanism has a self-locking function and is convenient to use, but the compression bar locking mechanism adopts the locking shifting fork head to be inserted into the groove of the hub connecting seat to realize locking, the structure is relatively thin, the locking force is insufficient and is easy to damage, the working state is unstable, and the self-locking mechanism is only suitable for small-sized crawler excavators and is not suitable for medium-sized and large-sized crawler excavators.
Disclosure of Invention
The utility model provides a transfer trolley for short-distance transportation of a crawler excavator, which is provided with an automatic braking mechanism (braking system), wherein the automatic braking mechanism adopts a band-type brake drum type brake with a brake drum matched with a brake shoe, and the transfer trolley is large in braking force, not easy to damage, stable in work and more suitable for transferring of medium-sized and large-sized crawler excavators.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
a transfer vehicle for short-distance transportation of a crawler excavator comprises a vehicle body, rubber tires, half shafts, pedals, a connecting rod mechanism and a braking system; the width of the vehicle body is larger than the width of a crawler belt of the excavator; rubber tires are respectively arranged on two outer sides of the rear end of the vehicle body along the running direction of the transfer vehicle, and are rotationally connected with side plates of the vehicle body through half shafts; a braking system is arranged between the half shaft and the rubber tire, and the braking system is a band-type brake drum brake; the rear part of the bottom plate of the vehicle body is provided with a pedal, and the pedal is connected with the corresponding 2 groups of braking systems through 2 groups of connecting rod mechanisms; when no load exists, the transfer trolley realizes self-locking through a brake system; during transportation, 2 tracks of the excavator respectively move to the vehicle bodies of the corresponding transportation vehicles, and after the tracks press down the pedals, the connecting rod mechanism drives the braking system to act so as to unlock the transportation vehicles.
Furthermore, the inclination angle of the vehicle body is 10-20 degrees when in no-load, and the front part of the bottom plate is provided with a horizontal section which is attached to the ground.
Further, a plurality of anti-skid barrier strips are arranged on the top surface of the bottom plate of the vehicle body along the longitudinal direction.
Further, the band-type brake drum brake comprises a brake bottom plate, an outer support brake shoe, a brake drum and a cam shaft; the half shaft is fixedly connected with a mounting hole on a side plate of the vehicle body through an expansion sleeve, the brake bottom plate is mounted on the half shaft through a shaft sleeve, 2 semicircular outer support brake shoes are radially and movably arranged at two ends of the brake bottom plate, and the 2 outer support brake shoes are elastically connected through tension springs; the brake drum is arranged at the periphery of the outer support brake shoes and fixedly connected with the hub of the rubber tire, and the cam shaft is arranged in one side opening of the 2 outer support brake shoes; when the cam shaft rotates under the action of the connecting rod mechanism, the 2 outer support brake shoes are outwards supported to be contacted with the brake drum to generate braking moment, so that braking is realized.
Further, the connecting rod mechanism consists of a connecting rod, a pull rod, a reset spring, a spring cylinder and a deflector rod; the rear end of the bottom plate of the vehicle body is provided with a rotating shaft, the pedal is arranged in the middle of the rotating shaft and can drive the rotating shaft to rotate, and two ends of the rotating shaft are respectively connected with connecting rods at corresponding ends; the pull rod and the reset spring are coaxially arranged, and the pull rod is driven to move towards the rear end direction of the vehicle body against the pulling force of the reset spring when the connecting rod rotates along with the rotating shaft; the outside of the reset spring is provided with a spring cylinder which is of a telescopic sleeve structure, and one end of the deflector rod is connected with the telescopic end of the spring cylinder and moves along with the telescopic end of the spring cylinder; the other end of the deflector rod is connected with the cam shaft and drives the cam shaft to rotate; when no load, the deflector rod, the spring cylinder, the pull rod, the connecting rod and the rotating shaft are all restored to the initial position under the action of the return spring.
Further, a connecting beam is arranged between the 2 side plates at the rear end of the vehicle body, and a lifting hook is arranged at the top of the connecting beam; and a hoisting iron chain is arranged on the side plate at the corresponding end.
Compared with the prior art, the utility model has the beneficial effects that:
the automatic braking mechanism adopts a band-type brake drum type brake with a brake drum matched with a brake shoe, has large braking force, is not easy to damage, works stably, and is more suitable for the transportation of medium-sized and large-sized track excavators.
Drawings
Fig. 1 is an exterior view of the transfer vehicle according to the present utility model.
FIG. 2 is a schematic diagram of a braking system according to the present utility model.
FIG. 3 is a schematic diagram of a brake system according to the present utility model.
FIG. 4 is a schematic diagram of a brake system according to the present utility model.
In the figure: 1. the brake system comprises a vehicle body 2, a half shaft 3, a rubber tire 4, a lifting iron chain 5, a pin shaft 6, a brake system 7, a reset spring 8, a lifting screw 9, a cam shaft 10, a deflector rod 11, a spring barrel 12, a pin shaft 13, a rod end joint 14, a pull rod 15, a connecting rod 16, a pedal 17, a expansion sleeve 18, a brake bottom plate 19, a brake drum 20, a tension spring 21, an external support brake shoe 22, an oil seal 23, a bearing 24, a hub 25, a stop washer 26, a spindle head nut 27, a oil retainer 28, a hub cover 29 and an O-shaped sealing ring
Detailed Description
The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:
as shown in fig. 1 to 4, the transfer vehicle for short-distance transportation of the crawler excavator comprises a vehicle body 1, a rubber tire 3, a half shaft 2, a pedal 16, a connecting rod mechanism and a braking system; the vehicle body 1 consists of a bottom plate and 2 side plates, and the width of the vehicle body 1 is larger than the width of a crawler belt of the excavator; rubber tires 3 are respectively arranged on two outer sides of the rear end of the vehicle body 1 along the running direction of the transfer vehicle, and the rubber tires 3 are rotationally connected with side plates of the vehicle body 1 through half shafts 2; a braking system is arranged between the half shaft 2 and the rubber tire 3, and the braking system is a band-type brake drum brake; the rear part of the bottom plate of the vehicle body 1 is provided with a pedal 16, and the pedal 16 is connected with the corresponding 2 groups of braking systems through 2 groups of connecting rod mechanisms; when no load exists, the transfer trolley realizes self-locking through a brake system; during transportation, 2 tracks of the excavator respectively move to the vehicle body 1 of the corresponding transportation vehicle, and after the pedals 16 are pressed down by the tracks, the transportation vehicle is unlocked by driving a braking system to act through a connecting rod mechanism.
Furthermore, the inclination angle of the vehicle body 1 is 10-20 degrees when in no-load, and the front part of the bottom plate is provided with a horizontal section which is attached to the ground.
Further, a plurality of anti-skid barrier strips are arranged on the top surface of the bottom plate of the vehicle body 1 along the longitudinal direction.
Further, the band-type brake drum brake comprises a brake bottom plate 18, an outer support brake shoe 21, a brake drum 19 and a cam shaft 9; the half shaft 2 is fixedly connected with a mounting hole on a side plate of the vehicle body 1 through an expansion sleeve 17, the brake bottom plate 18 is mounted on the half shaft 2 through a shaft sleeve, 2 semicircular outer support brake shoes 21 are radially movably arranged at two ends of the brake bottom plate 18, and the 2 outer support brake shoes 21 are elastically connected through tension springs 20; the brake drum 19 is arranged on the periphery of the outer support brake shoes 21 and fixedly connected with the hub 24 of the rubber tyre 3, and the cam shaft 9 is arranged in one side opening of the 2 outer support brake shoes 21; when the cam shaft 9 rotates under the action of the connecting rod mechanism, the 2 outer support brake shoes 21 are outwards supported to be contacted with the brake drum 19, so that braking torque is generated, and braking is realized.
Further, the link mechanism consists of a link 15, a pull rod 14, a return spring 7, a spring cylinder 11 and a deflector rod 10; the rear end of the bottom plate of the vehicle body 1 is provided with a rotating shaft, a pedal 16 is arranged in the middle of the rotating shaft and can drive the rotating shaft to rotate, and two ends of the rotating shaft are respectively connected with a connecting rod 15 at the corresponding end; the pull rod 14 and the return spring 7 are coaxially arranged, and the pull rod 14 is driven to move towards the rear end direction of the vehicle body 1 against the pulling force of the return spring 7 when the connecting rod 15 rotates along with the rotating shaft; the outside of the reset spring 7 is provided with a spring cylinder 11, the spring cylinder 11 is of a telescopic sleeve structure, and one end of the deflector rod 10 is connected with the telescopic end of the spring cylinder 11 and moves along with the telescopic end; the other end of the deflector rod 10 is connected with the cam shaft 9 and drives the cam shaft 9 to rotate; when no load, the deflector rod 10, the spring cylinder 11, the pull rod 14, the connecting rod 15 and the rotating shaft are all restored to the initial positions under the action of the return spring 7.
Further, a connecting beam is arranged between the 2 side plates at the rear end of the vehicle body 1, and a lifting hook is arranged at the top of the connecting beam; and a hoisting iron chain 4 is arranged on the side plate at the corresponding end.
The transfer trolley for the crawler excavator short-distance transportation does not need to use a flat-bed transport vehicle as a transport tool when in short-distance transportation or equipment transfer, and has small site occupation and low transport cost; the two tracks of the excavator are respectively arranged on a transfer trolley, which is equivalent to putting on 'roller shoes' for the excavator, so that the tracks of the excavator are separated from the ground, and the dump truck is towed by the dump truck after the carriage of the dump truck is grabbed by the bucket. The transfer car (buggy) adopts rubber tyre, can prevent to damage the road surface, and the transfer car (buggy) has the brake function and can prevent swift current car when empty load, convenient to use. The brake mechanism adopts a band-type brake drum type brake with a brake drum and a brake shoe which are matched, the brake force is large, the brake mechanism is not easy to damage, the work is stable, and the brake mechanism is more suitable for the transportation of medium and large track excavators.
When the transfer trolley for the crawler excavator short-distance transportation is used, 2 transfer trolleys are placed in parallel according to the distance between 2 tracks of the excavator, and the phenomenon of sliding during loading of the excavator is avoided due to the self-locking function of the transfer trolleys when the transfer trolleys are unloaded. After all 2 tracks of the excavator move onto the transfer trolley, the corresponding pedals are respectively pressed down, so that the braking system is unlocked. Then the bucket of the excavator hooks the carriage bucket of the dump truck, so that the crawler belt leaves the ground, and the excavator moves by means of the rubber tires of the transfer truck under the traction of the dump truck.
The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present utility model, but the scope of the present utility model is not limited to the following examples. The methods used in the examples described below are conventional methods unless otherwise specified.
[ example 1 ]
As shown in fig. 1 to 4, in the present embodiment, a transfer vehicle for short-distance transportation of a crawler excavator includes a vehicle body 1, a half shaft 2, a brake system, a link mechanism, a rubber tire 3, and the like.
In this embodiment, automobile body 1 is welded by low alloy high strength structural steel, is whole again through machining to make, and automobile body 1 comprises bottom plate and 2 curb plates, along the transfer car (buggy) direction of traveling, and the horizontal segment that one section length is 500mm is established to the rear end lower part of bottom plate, and the horizontal segment can laminate completely with ground when the transfer car (buggy) is empty, is convenient for provide sufficient frictional force and good support when the excavator loads.
In this embodiment, 2 half shafts 2 are respectively mounted on both sides of the vehicle body 1, and are fastened to the hub 24 of the rubber tire 3 through the expansion sleeve 17. The brake system adopts a traditional band-type brake drum brake system (one specific structural form is shown in fig. 4), the band-type brake drum brake system consists of a brake drum 19, an outer support brake shoe 21, a cam shaft 9, a tension spring 20, a shaft end sealing structure and the like, 2 semicircular outer support brake shoes 21 are elastically connected through the tension spring 20, the cam shaft 9 is used for expanding the outer support brake shoe 21 outwards under the action of external force, and the brake drum 19 is matched with the outer support brake shoe 21 to realize braking; the bearing 23 is arranged between the brake drum 19 and the hub 24 and the half shaft 2, the oil seal 22 is arranged at the inner side of the brake drum 19 corresponding to the bearing 23, the oil retainer 27, the stop washer 25 and the spindle head nut 26 are arranged at the outer side of the hub 24 corresponding to the bearing 23, the outer side of the hub 24 is sealed by the hub cover 28, and the O-shaped sealing ring 29 is arranged between the hub cover 28 and the hub 24 for sealing. The inside of the hub 24 is enabled to achieve the dustproof and leak-proof effects through the shaft end sealing structure, and lubricating grease is also required to be smeared inside the hub 24.
In this embodiment, the link mechanism includes a link 15, a pull rod 14, a return spring 7, a shift lever 10, etc., where the return spring 7 is installed in a spring barrel 11, the spring barrel 11 is of a telescopic sleeve structure, two ends of the spring barrel 11 are respectively provided with a suspension bolt 8, one suspension bolt 8 is connected with a fixed plate disposed outside a side plate of the vehicle body 1, the other suspension bolt 8 is connected with a pin shaft seat, and the pin shaft seat is connected with a rod end joint 13 of the pull rod 14 through a pin shaft 12. The connecting rod 15 is welded and fixed with the rotating shaft, the pedal 16 is welded and fixed with the rotating shaft, and the cam shaft 9 is fixed with the deflector rod 10 through bolts.
After the excavator is loaded on the transfer trolley, the track presses down the pedal 16, the connecting rod 15 and the pull rod 14 overcome the tension of the return spring 7 to drive the deflector rod 10 to move, and the deflector rod 10 is utilized to rotate the cam shaft 9, so that the braking system is unlocked. When no load is applied, the brake system is brought back into the braked state by pulling the shift lever 10 by the return spring 7.
[ example 2 ]
In this embodiment, a basic structure of a transfer truck for short-distance transportation of a crawler excavator is the same as that of embodiment 1. On this basis, a hoisting structure is additionally arranged, so that the hoisting and carrying of the transfer trolley are facilitated.
The hoisting structure comprises hoisting iron chains 4 and lifting lugs, which are all arranged at the rear end of the transfer car body 1, wherein the number of the hoisting iron chains 4 is 1, and the two ends of the hoisting iron chains are respectively connected with corresponding side plates of the car body 1 through corresponding pin shafts 5. The number of lifting lugs is 2, and the lifting lugs are arranged on the connecting beams connected between the side plates of the vehicle body 1.
In this embodiment, the rubber tire 3 is an international standard general-purpose tire, which can provide sufficient bearing capacity, and is safe and reliable. The steel ring of the rubber tyre 3 is arranged outside the mounting flange of the braking system and is fixedly connected through bolts.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme and the concept of the present utility model, and should be covered by the scope of the present utility model.
Claims (6)
1. The transfer trolley for the short-distance transportation of the crawler excavator is characterized by comprising a trolley body, rubber tires, half shafts, pedals, a connecting rod mechanism and a braking system; the width of the vehicle body is larger than the width of a crawler belt of the excavator; rubber tires are respectively arranged on two outer sides of the rear end of the vehicle body along the running direction of the transfer vehicle, and are rotationally connected with side plates of the vehicle body through half shafts; a braking system is arranged between the half shaft and the rubber tire, and the braking system is a band-type brake drum brake; the rear part of the bottom plate of the vehicle body is provided with a pedal, and the pedal is connected with the corresponding 2 groups of braking systems through 2 groups of connecting rod mechanisms; when no load exists, the transfer trolley realizes self-locking through a brake system; during transportation, 2 tracks of the excavator respectively move to the vehicle bodies of the corresponding transportation vehicles, and after the tracks press down the pedals, the connecting rod mechanism drives the braking system to act so as to unlock the transportation vehicles.
2. The transfer vehicle for short-distance transportation of the crawler excavator according to claim 1, wherein the inclination angle of the vehicle body is 10-20 degrees when the crawler excavator is in no-load state, and the front part of the bottom plate is provided with a horizontal section which is attached to the ground.
3. The transfer vehicle for short haul transport of a track excavator of claim 1 wherein the floor top surface of the vehicle body is provided with a plurality of anti-skid bars longitudinally.
4. The transfer vehicle for short haul transport of a track excavator of claim 1 wherein the band brake drum brake comprises a brake bed, an outer strut brake shoe, a brake drum and a cam shaft; the half shaft is fixedly connected with a mounting hole on a side plate of the vehicle body through an expansion sleeve, the brake bottom plate is mounted on the half shaft through a shaft sleeve, 2 semicircular outer support brake shoes are radially and movably arranged at two ends of the brake bottom plate, and the 2 outer support brake shoes are elastically connected through tension springs; the brake drum is arranged at the periphery of the outer support brake shoes and fixedly connected with the hub of the rubber tire, and the cam shaft is arranged in one side opening of the 2 outer support brake shoes; when the cam shaft rotates under the action of the connecting rod mechanism, the 2 outer support brake shoes are outwards supported to be contacted with the brake drum to generate braking moment, so that braking is realized.
5. The transfer vehicle for short-distance transportation of a crawler excavator according to claim 1 or 4, wherein the link mechanism comprises a connecting rod, a pull rod, a return spring, a spring cylinder and a deflector rod; the rear end of the bottom plate of the vehicle body is provided with a rotating shaft, the pedal is arranged in the middle of the rotating shaft and can drive the rotating shaft to rotate, and two ends of the rotating shaft are respectively connected with connecting rods at corresponding ends; the pull rod and the reset spring are coaxially arranged, and the pull rod is driven to move towards the rear end direction of the vehicle body against the pulling force of the reset spring when the connecting rod rotates along with the rotating shaft; the outside of the reset spring is provided with a spring cylinder which is of a telescopic sleeve structure, and one end of the deflector rod is connected with the telescopic end of the spring cylinder and moves along with the telescopic end of the spring cylinder; the other end of the deflector rod is connected with the cam shaft and drives the cam shaft to rotate; when no load, the deflector rod, the spring cylinder, the pull rod, the connecting rod and the rotating shaft are all restored to the initial position under the action of the return spring.
6. The transfer vehicle for short-distance transportation of a crawler excavator according to claim 1, wherein a connecting beam is arranged between 2 side plates at the rear end of the vehicle body, and a lifting hook is arranged at the top of the connecting beam; and a hoisting iron chain is arranged on the side plate at the corresponding end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320379053.3U CN219565050U (en) | 2023-03-03 | 2023-03-03 | Transfer trolley for short-distance transportation of crawler excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320379053.3U CN219565050U (en) | 2023-03-03 | 2023-03-03 | Transfer trolley for short-distance transportation of crawler excavator |
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| Publication Number | Publication Date |
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| CN219565050U true CN219565050U (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320379053.3U Active CN219565050U (en) | 2023-03-03 | 2023-03-03 | Transfer trolley for short-distance transportation of crawler excavator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117819035A (en) * | 2024-03-04 | 2024-04-05 | 长春汽车工业高等专科学校 | Short-distance transportation equipment |
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2023
- 2023-03-03 CN CN202320379053.3U patent/CN219565050U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117819035A (en) * | 2024-03-04 | 2024-04-05 | 长春汽车工业高等专科学校 | Short-distance transportation equipment |
| CN117819035B (en) * | 2024-03-04 | 2024-05-14 | 长春汽车工业高等专科学校 | Short-distance transportation equipment |
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