CN114414269B - Sand-resistant test bench for bulldozer cab - Google Patents
Sand-resistant test bench for bulldozer cab Download PDFInfo
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- CN114414269B CN114414269B CN202210321112.1A CN202210321112A CN114414269B CN 114414269 B CN114414269 B CN 114414269B CN 202210321112 A CN202210321112 A CN 202210321112A CN 114414269 B CN114414269 B CN 114414269B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The invention relates to the technical field of engineering mechanical equipment, in particular to a sand-resistant test bench for a bulldozer cab, which comprises a torque output device, a cab assembly fixing device and a sand blasting device, the sand blasting device comprises a gas injection system and a sand dust circulating system, can perform torsion input on a cab assembly of the bulldozer, simultaneously simulate the working condition of the bulldozer to detect the sand resistance of the cab assembly, and the mutually perpendicular transmission shafts and the cross rods ensure that the torsion output device can apply torsion on the front two fixed points of the cab assembly and can also apply torsion on the rear two fixed points on the premise of not changing the direction of the cab assembly, so as to avoid the need of changing the position of the cab assembly once by using the travelling crane when the test point position is changed, the operation of changing the position of the cab assembly twice can be reduced when the six-point cab assembly is tested.
Description
Technical Field
The invention relates to the technical field of engineering mechanical equipment, in particular to a sand-resistant test bench for a bulldozer cab.
Background
A bulldozer is an earthwork machine capable of excavating, transporting and discarding rock and soil, and has wide application in open-pit mines. For example, for construction of refuse dumps, levelling of automobile refuse dumps, accumulation of dispersed rock, levelling of work pans, construction sites, etc. It is not only used for auxiliary work, but also for main mining work. For example, stripping and mining of sand deposits, towing and boosting of scrapers and plows, lowering of stripping step heights in cooperation with other earth moving machines in non-transport mining methods, and the like.
The dust invasion into the cab of the existing domestic bulldozer is a chronic disease and can not be solved for a long time.
Compared with other engineering machines, the bulldozer has the greatest difference that the walking part of the bulldozer still needs to work when the bulldozer works, namely the bulldozer works while walking, so that the frame of the bulldozer needs to bear the force transmitted by the blade and the force transmitted by the walking system when the bulldozer works.
The cab assembly of bull-dozer comprises the floor frame of fixing on the frame and the cab of fixing on the floor frame, when the bull-dozer at the during operation, the scraper blade can exert a torsion for cab assembly bottom with running gear atress simultaneously, the cab assembly is being twisted and is producing deformation, because the deformation of floor frame and cab is asynchronous, the entrance that the combination department of floor frame and cab can become the sand and dust invasion, how detect out different cabs under different torsion the condition that sand and dust invaded from floor frame and cab combination department becomes the problem that needs to solve urgently.
Disclosure of Invention
The purpose of the invention is: the defects in the prior art are overcome, and the sand-resistant test bench for the bulldozer cab is provided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a sand-resistant test bench for a bulldozer cab comprises a torque output device, a cab assembly fixing device and a sand blasting device, wherein the sand blasting device comprises an air injection system and a sand and dust circulating system, the torque output device comprises a first fixing frame, the torque output device is fixed through the first fixing frame, the torque output device comprises a power end and a force application end, and the force application end and the power end are respectively positioned on two sides of the first fixing frame;
the cab assembly fixing device comprises a first T-shaped groove fixing plate, a plurality of connecting columns are detachably connected to the first T-shaped groove fixing plate, the first T-shaped groove fixing plate is located below the force application end, and the upper surface and the lower surface of the first T-shaped groove fixing plate are communicated through a T-shaped groove of the first T-shaped groove fixing plate;
the sand-dust circulating system comprises a filter screen, a sand hopper and a plurality of sand spraying pipes, the filter screen is connected to the upper opening of the sand hopper, the T-shaped groove fixing plate is connected to the upper surface of the filter screen, and the lower opening of the sand hopper is communicated with one end of each sand spraying pipe;
the air injection system comprises an air pump and a plurality of air pipes, the number of the air pipes is equal to that of the sand blasting pipes, the air pump is connected with one end of the air pipe, the other end of the air pipe is communicated with a first connector and a second connector of a tee joint respectively, a third connector of the tee joint is connected with a nozzle, and the tee joint comprises a nozzle connected to the tee joint, wherein the nozzle is arranged on the tee joint, and the sand blasting pipes reach the air pipes are sand blasting units.
Furthermore, the force application end comprises a transmission shaft, the transmission shaft is parallel to the ground, a cross rod is fixedly connected to the end portion of the transmission shaft, the cross rod is perpendicular to the transmission shaft, a first bolt and a second bolt are slidably connected to the cross rod, the first bolt and the second bolt are respectively located on two sides of the transmission shaft, the first bolt and the second bolt are parallel to each other and perpendicular to the cross rod, and the axis of the first bolt and the axis of the second bolt are coplanar with the axis of the cross rod and perpendicular to the transmission shaft.
Furthermore, a left long circular hole is formed in the left section of the cross rod, a right long circular hole is formed in the right section of the cross rod, the bolt is located in the left long circular hole and can slide along the left long circular hole, the bolt is located in the right long circular hole and can slide along the right long circular hole, and the direction of the left long circular hole is parallel to the direction of the cross rod.
Furthermore, the power end comprises a hydraulic motor and a speed reducer, and the transmission shaft is connected with the hydraulic motor through the speed reducer.
Further, the spliced pole is including fixed base angle, support column and bolt three, fixed base angle includes connecting plate and fixing bolt one, the perpendicular fixed connection of support column is in on the connecting plate, the opening of equidistance has four fixed orificess, four on the connecting plate the axis of fixed orifices extremely distance between the support column axis equals, the fixed bolt one has been inserted in the fixed orifices, the spliced pole passes through fixing bolt detachable to be fixed on T type groove fixed plate one, the upper surface of support column is opened there is the bolt hole, the connection of three detachable of bolt is in the bolt hole.
Furthermore, the support column is of a two-section structure and comprises an upper support column and a lower support column, the inner diameter of the lower support column is equal to the outer diameter of the upper support column, an upper retainer ring is arranged at the upper section of the upper support column, and a lower retainer ring is arranged at the upper section of the lower support column;
the connecting column further comprises a safety cover, the section of the safety cover is C-shaped, the minimum width of the gap of the safety cover is larger than or equal to the outer diameter of the upper supporting column, the upper end face of the safety cover is in contact connection with the lower end face of the upper retainer ring, and the lower end face of the safety cover is in contact connection with the upper end face of the lower retainer ring and used for limiting downward displacement of the upper supporting column; the outside of safety guard still be provided with the parallel enhancement strip of axis of safety guard, the quantity more than or equal to 2 of strengthening the strip, two outmost the contained angle more than or equal to 0 between the enhancement strip.
Further, it is connected with T type groove fixed plate two still to detachable between T type groove fixed plate one and the spliced pole, T type groove fixed plate two contains two T type grooves at least, T type groove length more than or equal to T type groove fixed plate one of T type groove fixed plate two the T type groove of T type groove fixed plate one with T type groove mutually perpendicular of T type groove fixed plate two, be connected with a plurality of connection feet on the lateral wall of T type groove fixed plate two, it has fixing bolt two to connect the foot interpolation, T type groove fixed plate two is fixed through two detachable of fixing bolt on the T type groove fixed plate one.
Furthermore, the plurality of sand blasting units are divided into four groups, wherein the four groups comprise a group I, a group II, a group III and a group IV, axes of air outlets of nozzles of the sand blasting units in each group are parallel to each other, the four groups of nozzles are respectively fixed on the fixing frame I, the fixing frame II, the fixing frame III and the fixing frame IV, a rectangular frame is formed by the fixing frame I, the fixing frame II, the fixing frame III and the fixing frame in a surrounding mode, the force application end is located in the rectangular frame, and the air outlets of the nozzles face the inner side of the rectangular frame.
Further, the inner surface of the rectangular frame is fixedly connected with a skin, and the transmission shaft penetrates through the skin and can rotate.
Furthermore, the second fixing frame, the third fixing frame and the fourth fixing frame are detachably fixed on the first T-shaped groove fixing plate.
The technical scheme adopted by the invention has the beneficial effects that:
1. the invention can carry out torsion input on the cab assembly of the bulldozer, and simulate the working condition of the bulldozer to detect the sand resistance of the cab assembly while carrying out torsion input.
2. The transmission shafts and the cross rods which are perpendicular to each other enable the torsion output device to apply torsion to the front two fixing points of the cab assembly and apply torsion to the rear two fixing points on the premise that the position of the cab assembly is not changed, so that the situation that the position of the cab assembly needs to be changed once by a travelling crane when a test point position is changed is avoided, and the operation of changing the position of the cab assembly twice can be reduced when the six-point cab assembly is tested.
3. The nozzles are arranged on all four sides, so that the working environment of the cab assembly can be simulated as much as possible, and the detection result has higher referential property.
4. The cab assembly of the bulldozer is large, so that the occupied area of the bulldozer is large, once individual parts fall into the sand hopper to cause sand blasting circulation failure, the maintenance is very difficult, the filter screen arranged below the T-shaped groove fixing plate can ensure that sprayed sand can smoothly enter the sand hopper to carry out next sand blasting circulation, and the phenomenon that workpieces fall into the sand hopper from the T-shaped groove to cause equipment failure can also be avoided.
5. The front hole distance and the rear hole distance of the fixed point positions of different bulldozer cab assemblies are different, the probability is not equal to the multiple of the T-shaped groove distance of the first T-shaped groove fixing plate, the fixing position of the cab assembly fixing device can be more flexible by arranging the second T-shaped groove fixing plate as the adjusting mechanism, and the bulldozer cab assembly fixing device can be suitable for more cab models.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of another angle after four fixing frames are hidden according to the present invention;
FIG. 3 is a side view of the present invention with four holders hidden;
FIG. 4 is a schematic structural relationship diagram of a T-shaped groove fixing plate I, a filter screen and an hourglass according to the invention;
FIG. 5 is a schematic view of the installation of the cab assembly fixing device and the torque output device of the present invention;
FIG. 6 is a schematic structural view of a cab assembly fixing device according to the present invention.
1. A cab assembly; 11. a floor frame; 12. a cab; 2. a torque output device; 21. a force application end; 211. a drive shaft; 212. a cross bar; 2121. a left slotted hole; 22. a first bolt; 23. a second bolt; 3. a cab assembly fixing device; 31. connecting columns; 311. a third bolt; 312. an upper support column; 3121. an upper retainer ring; 3122. bolt holes; 313. a lower support pillar; 3131. a lower retainer ring; 3132. a connecting plate; 31321. a fixing hole; 314. a safety shield; 3141. a notch; 3142. a reinforcing strip; 32. a first T-shaped groove fixing plate; 33. a second T-shaped groove fixing plate; 4. a sand blasting device; 41. filtering with a screen; 42. a sand hopper; 43. a sand blasting pipe; 44. a tee joint 45 and a nozzle; 5. fixing a first bolt; 61. a first fixing frame; 62. a second fixing frame; 63. a third fixing frame; 64. and a fourth fixing frame.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention. The present invention is described in detail by using schematic structural diagrams and the like, which are only examples and should not limit the protection scope of the present invention. In addition, the actual fabrication process should include three-dimensional space of length, width and depth.
Referring to fig. 1-6, a sand-resistant test bench for a bulldozer cab 12 comprises a torque output device 2, a cab assembly fixing device 3 and a sand blasting device 4, wherein the sand blasting device 4 comprises an air injection system and a sand and dust circulation system, the torque output device 2 comprises a first fixing frame 61, the torque output device 2 is fixed through the first fixing frame 61, the torque output device 2 comprises a power end and a force application end 21, and the force application end 21 and the power end are respectively positioned on two sides of the first fixing frame 61;
the cab assembly fixing device 3 comprises a first T-shaped groove fixing plate 32, a plurality of connecting columns 31 are detachably connected to the first T-shaped groove fixing plate 32, the first T-shaped groove fixing plate 32 is located below the force application end 21, and the upper surface and the lower surface of the first T-shaped groove fixing plate 32 are communicated through a T-shaped groove of the first T-shaped groove fixing plate 32;
the number of connecting columns 31 is selected to be 2 or 4, the number is selected to be 2 when the cab assembly 1 including the four-point floor frame 11 is tested, and the number is selected to be 4 when the cab assembly 1 including the six-point floor frame 11 is tested.
The sand and dust circulating system comprises a filter screen 41, a sand hopper 42 and a plurality of sand spraying pipes 43, wherein the filter screen 41 is connected to the upper opening of the sand hopper 42, the first T-shaped groove fixing plate 32 is connected to the upper surface of the filter screen 41, and the lower opening of the sand hopper 42 is communicated with one ends of the sand spraying pipes 43;
preferably, the diameter of the circumcircle of the lower opening of the sand hopper is less than or equal to 500mm, so that maintenance personnel are prevented from falling into the sand hopper.
The air injection system comprises an air pump and a plurality of air pipes, the number of the air pipes is equal to that of the sand blasting pipes 43, the air pump is connected with one end of each air pipe, the other end of each air pipe is communicated with the first interface and the second interface of the tee joint 44, the third interface of the tee joint 44 is connected with a nozzle 45, and the tee joint 44 comprises a nozzle 45 connected to the tee joint 44, the sand blasting pipes 43 and the air pipes are a sand blasting unit.
The invention can carry out torsion input on the cab assembly 1 of the bulldozer, simulate the working condition of the bulldozer while carrying out the torsion input so as to detect the sand resistance of the cab assembly 1.
The cab assembly 1 of the bulldozer is large, so that the occupied area of the bulldozer is large, once individual parts fall into the sand hopper 42 to cause sand blasting circulation failure, the maintenance is very difficult, the filter screen 41 arranged below the first T-shaped groove fixing plate 32 can ensure that sprayed sand can smoothly enter the sand hopper 42 to carry out next sand blasting circulation, and a workpiece can be prevented from falling into the sand hopper 42 from a T-shaped groove to cause equipment failure.
Referring to fig. 1 to 3, the force application end 21 includes a transmission shaft 211, the transmission shaft 211 is parallel to the ground, a cross bar 212 is fixedly connected to an end of the transmission shaft 211, the cross bar 212 is perpendicular to the transmission shaft 211, a first bolt 22 and a second bolt 23 are slidably connected to the cross bar 212, the first bolt 22 and the second bolt 23 are respectively located on two sides of the transmission shaft 211, the first bolt 22 and the second bolt 23 are parallel to each other and perpendicular to the cross bar 212, and an axis of the first bolt 22 and an axis of the second bolt 23 are coplanar with an axis of the cross bar 212 and perpendicular to the transmission shaft 211. If the floor frame 11 is torsionally output by linear motion elements such as hydraulic cylinders and air cylinders, after the floor frame 11 is deformed, because the force application direction is not perpendicular to the upper and lower surfaces of the floor frame 11, the force actually received by the floor frame 11 is not equal to the force output by the force application device, which may cause measurement errors, and the force application to the cab assembly 1 through the cross rod 212 by using the transmission shaft 211 as the center of circle can eliminate the situation that the force received by the floor frame 11 is not equal to the applied force, so that the test result has better reference.
The mutually perpendicular transmission shaft 211 and the cross bar 212 enable the torque output device 2 to apply torque to the front two fixed points of the cab assembly 1 and apply torque to the rear two fixed points on the premise of not changing the direction of the cab assembly 1, so that the situation that the position of the cab assembly 1 needs to be changed once by using a traveling crane when a test point is changed is avoided, and the operation of changing the position of the cab assembly 1 twice can be reduced when the six-point cab assembly 1 is tested. That is, when the force application point position needs to be changed, the cab assembly 1 only needs to be lifted to move back and forth so as to fix the force application point to be measured with the cross rod 212, and the rest point positions are fixed through the connecting column 31 without changing the direction of the cab assembly 1.
Referring to fig. 5, a left long circular hole 2121 is formed in the left section of the cross bar 212, a right long circular hole is formed in the right section of the cross bar, the first bolt 22 is located in the left long circular hole 2121 and can slide along the left long circular hole 2121, the second bolt 23 is located in the right long circular hole and can slide along the right long circular hole, and the directions of the left long circular hole 2121 and the right long circular hole are parallel to the direction of the cross bar 212. The oblong holes enable the distance between the first bolt 22 and the second bolt 23 to be adjustable, so that the torque output device 2 can be tested not only at different positions of the cab assembly 1, but also for various brands and models of cab assemblies 1.
Referring to fig. 1-6, the power end includes a hydraulic motor and a reducer, and the transmission shaft 211 is connected to the hydraulic motor through the reducer. The reduction gear can be effectual with hydraulic motor's torsion increase to increase measuring range.
Referring to fig. 6, the connection column 31 includes a fixed base angle, a support column and a third bolt 311, the fixed base angle includes a connection plate 3132 and a first fixing bolt 5, the support column is vertically and fixedly connected to the connection plate 3132, four fixing holes 31321 are formed on the connection plate 3132 at equal angles, distances between axes of the four fixing holes 31321 and axes of the support column are equal, the first fixing bolt 5 is inserted into the fixing hole 31321, the connection column 31 is detachably fixed on the first T-shaped groove fixing plate 32 through the first fixing bolt 5, a bolt hole 3122 is formed on the upper surface of the support column, and the third bolt 311 is detachably connected to the bolt hole 3122.
Referring to fig. 6, the support column has a two-section structure and includes an upper support column 312 and a lower support column 313, the inner diameter of the lower support column 313 is equal to the outer diameter of the upper support column 312, an upper retaining ring 3121 is disposed on the upper section of the upper support column 312, and a lower retaining ring 3131 is disposed on the upper section of the lower support column 313; preferably, the upper support column 312 is screwed to the lower support column 313 and the distance is adjusted, so as to further increase the stability of the connecting column 31.
The connecting column 31 further comprises a safety cover 314, the cross section of the safety cover 314 is C-shaped, the minimum width of the notch 3141 of the safety cover 314 is greater than or equal to the outer diameter of the upper supporting column 312, the upper end surface of the safety cover 314 is in contact connection with the lower end surface of the upper retaining ring 3121, and the lower end surface of the safety cover 314 is in contact connection with the upper end surface of the lower retaining ring 3131, so as to limit the downward displacement of the upper supporting column 312; the outer side of the safety cover 314 is further provided with reinforcing strips 3142 parallel to the axis of the safety cover 314, the number of the reinforcing strips 3142 is greater than or equal to 2, and the included angle between the two outermost reinforcing strips 3142 is greater than or equal to 0 degree. Safety guard 314 can further increase the stability of spliced pole 31, can increase one protection barrier when personnel are close to, avoid spliced pole 31 to shrink suddenly, the danger that driver's cabin assembly 1 dropped the cause.
Referring to fig. 5, a T-shaped groove fixing plate two 33 is detachably connected between the T-shaped groove fixing plate one 32 and the connecting column 31, the T-shaped groove fixing plate two 33 at least comprises two T-shaped grooves, the length of the T-shaped groove fixing plate two 33 is greater than or equal to twice the groove distance of the T-shaped groove fixing plate one 32, the T-shaped groove of the T-shaped groove fixing plate one 32 is perpendicular to the T-shaped groove of the T-shaped groove fixing plate two 33, a plurality of connecting pins are connected to the side wall of the T-shaped groove fixing plate two 33, fixing bolts two 23 are inserted into the connecting pins, and the T-shaped groove fixing plate two 33 is detachably fixed to the T-shaped groove fixing plate one 32 through the fixing bolts two 23.
The distances between the front holes and the rear holes of the fixing points of different bulldozer cab assemblies 1 are different, the probability is not equal to the multiple of the distance between the T-shaped grooves of the first T-shaped groove fixing plate 32, and the fixing position of the cab assembly fixing device 3 can be more flexible by arranging the second T-shaped groove fixing plate 33 as an adjusting mechanism, so that the bulldozer cab assembly fixing device is suitable for more types of cabs 12.
Referring to fig. 1, the plurality of sand blasting units are divided into four groups, including a group one, a group two, a group three and a group four, axes of air outlets of the nozzles 45 of the sand blasting units in each group are parallel to each other, the four groups of nozzles 45 are respectively fixed on the fixing frame one 61, the fixing frame two 62, the fixing frame three 63 and the fixing frame four 64, the fixing frame one 61, the fixing frame two 62, the fixing frame three 63 and the fixing frame four 64 enclose a rectangular frame, the force applying end 21 is located in the rectangular frame, and the air outlets of the nozzles 45 face the inner side of the rectangular frame.
The nozzles 45 are arranged on four sides, so that the working environment of the cab assembly 1 can be simulated as much as possible, and the detection result is more referential.
Referring to fig. 1, a skin is fixedly connected to an inner surface of the rectangular frame, and the transmission shaft 211 penetrates the skin and is rotatable. The covering can prevent sand from flying out of the collection range of the sand hopper 42, which causes sand waste.
Referring to fig. 1, the second fixing frame 62, the third fixing frame 63 and the fourth fixing frame 64 are detachably fixed on the first T-shaped groove fixing plate 32. The distance between the nozzle 45 and the cab assembly 1 can be effectively adjusted by fixing the nozzle on the first T-shaped groove fixing plate 32, different working conditions can be simulated, and the distance between the four fixing frames can be adjusted to adapt to the cab assemblies 1 with different sizes.
The method comprises the following steps:
1. fixing the cab assembly on the cab fixing device 3 and the torque output device 2;
2. setting a torque upper limit, enabling the torque output device 2 to work, and enabling the sand blasting device 4 to work;
3. the torque output device 2 and the sand blasting device 4 stop working;
4. observing the accumulation condition of the dust in the cab;
5. record how much the dust is under different torques.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The utility model provides a bulldozer cab sand-resistance test bench which characterized in that: the device comprises a torque output device, a cab assembly fixing device and a sand blasting device, wherein the sand blasting device comprises an air injection system and a sand dust circulating system, the torque output device comprises a first fixing frame, the torque output device is fixed through the first fixing frame, the torque output device comprises a power end and a force application end, and the force application end and the power end are respectively positioned on two sides of the first fixing frame;
the cab assembly fixing device comprises a first T-shaped groove fixing plate, a plurality of connecting columns are detachably connected to the first T-shaped groove fixing plate, the first T-shaped groove fixing plate is located below the force application end, and the upper surface and the lower surface of the first T-shaped groove fixing plate are communicated through a T-shaped groove of the first T-shaped groove fixing plate;
the sand-dust circulating system comprises a filter screen, a sand hopper and a plurality of sand spraying pipes, the filter screen is connected to the upper opening of the sand hopper, the T-shaped groove fixing plate is connected to the upper surface of the filter screen, and the lower opening of the sand hopper is communicated with one end of each sand spraying pipe;
the air injection system comprises an air pump and a plurality of air pipes, the number of the air pipes is equal to that of the sand blasting pipes, the air pump is connected with one end of each air pipe, the other end of each air pipe and the other end of each sand blasting pipe are respectively communicated with a first connector and a second connector of a tee, a third connector of the tee is connected with a nozzle, and the tee comprises the nozzle connected to the tee, the sand blasting pipes and the air pipes and is a sand blasting unit;
the force application end comprises a transmission shaft, the transmission shaft is parallel to the ground, a cross rod is fixedly connected to the end portion of the transmission shaft, the cross rod is perpendicular to the transmission shaft, a first bolt and a second bolt are connected to the cross rod in a sliding mode, the first bolt and the second bolt are located on two sides of the transmission shaft respectively, the first bolt and the second bolt are parallel to each other and perpendicular to the cross rod, and the axis of the first bolt and the axis of the second bolt are coplanar with the axis of the cross rod and perpendicular to the transmission shaft.
2. The bulldozer cab sand resistance test bed according to claim 1, characterized in that: the left section of horizontal pole is opened there is left slotted hole, and the right section of horizontal pole is opened there is right slotted hole, bolt one is located left side slotted hole just can slide along left slotted hole, bolt two is located right side slotted hole just can slide along right slotted hole, left side slotted hole with the direction of right slotted hole is parallel with the horizontal pole direction.
3. The bulldozer cab sand resistance test bed according to claim 1, characterized in that: the power end comprises a hydraulic motor and a speed reducer, and the transmission shaft is connected with the hydraulic motor through the speed reducer.
4. The sand-resistant test bench for bulldozer cab according to claim 1, characterized in that: the spliced pole is including fixed base angle, support column and bolt three, fixed base angle includes connecting plate and fixing bolt one, the perpendicular fixed connection of support column is in on the connecting plate, the opening of equidistance has four fixed orificess, four on the connecting plate the axis of fixed orifices extremely distance between the support column axis equals, fixing bolt one has been inserted in the fixed orifices, the spliced pole passes through fixing bolt detachable to be fixed on T type groove fixed plate one, the upper surface of support column is opened there is the bolt hole, three detachable connections of bolt are in the bolt hole.
5. A bulldozer cab sand-resistance test bench as set forth in claim 4, characterized in that: the support column is of a two-section structure and comprises an upper support column and a lower support column, the inner diameter of the lower support column is equal to the outer diameter of the upper support column, an upper retainer ring is arranged at the upper section of the upper support column, and a lower retainer ring is arranged at the upper section of the lower support column;
the connecting column further comprises a safety cover, the section of the safety cover is C-shaped, the minimum width of the notch of the safety cover is larger than or equal to the outer diameter of the upper supporting column, the upper end face of the safety cover is in contact connection with the lower end face of the upper check ring, and the lower end face of the safety cover is in contact connection with the upper end face of the lower check ring and used for limiting downward displacement of the upper supporting column;
the outside of safety guard still be provided with the parallel enhancement strip of axis of safety guard, the quantity more than or equal to 2 of strengthening the strip, two outmost the contained angle more than or equal to 0 between the enhancement strip.
6. A bulldozer cab sand resistance test bench as set forth in claim 5, characterized in that: it is connected with T type groove fixed plate two still to detachable between T type groove fixed plate one and the spliced pole, T type groove fixed plate two contains two T type grooves at least, T type groove length more than or equal to T type groove fixed plate one of T type groove fixed plate two the T type groove of T type groove fixed plate one with T type groove mutually perpendicular of T type groove fixed plate two, be connected with a plurality of connection feet on the lateral wall of T type groove fixed plate two, it has fixing bolt two to connect the foot interpolation, T type groove fixed plate two is fixed through two detachable of fixing bolt on the T type groove fixed plate one.
7. The bulldozer cab sand resistance test bed according to claim 1, characterized in that: the plurality of sand blasting units are divided into four groups, wherein the four groups comprise a group I, a group II, a group III and a group IV, the axes of the air outlets of the nozzles of the sand blasting units in each group are parallel to each other, the four groups of nozzles are respectively fixed on the fixing frame I, the fixing frame II, the fixing frame III and the fixing frame IV, a rectangular frame is formed by the fixing frame I, the fixing frame II, the fixing frame III and the fixing frame in a surrounding mode, the force application end is located in the rectangular frame, and the air outlets of the nozzles face the inner side of the rectangular frame.
8. The bulldozer cab sand resistance test bed according to claim 7, wherein: the inner surface of the rectangular frame is fixedly connected with a covering, and the transmission shaft penetrates through the covering and can rotate.
9. A bulldozer cab sand resistance test bed according to claim 8, characterised in that: and the second fixing frame, the third fixing frame and the fourth fixing frame are detachably fixed on the first T-shaped groove fixing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210321112.1A CN114414269B (en) | 2022-03-30 | 2022-03-30 | Sand-resistant test bench for bulldozer cab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210321112.1A CN114414269B (en) | 2022-03-30 | 2022-03-30 | Sand-resistant test bench for bulldozer cab |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114414269A CN114414269A (en) | 2022-04-29 |
| CN114414269B true CN114414269B (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210321112.1A Active CN114414269B (en) | 2022-03-30 | 2022-03-30 | Sand-resistant test bench for bulldozer cab |
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