A kind of dismantling device of connecting rob bushing and dismounting process thereof
Technical field
The present invention relates to lining dismounting technical field, particularly relate to a kind of dismantling device and dismounting process thereof of connecting rob bushing.
Background technology
Connecting rod and connecting rob bushing are more important part in engine, and the connecting rob bushing bore area is the softer metal material of one deck, and connecting rob bushing weares and teares easily at work, and the connecting rob bushing of wearing and tearing needs dismounting, and need to install new connecting rob bushing.In the prior art, generally be the unsettled placement of an end with connecting rod during the dismounting connecting rob bushing, adopt the method for beaing to come the dismounting lining.Because it is fixing that connecting rod does not have steadily to place, under the beaing of gravity, easily cause the small end endoporus of rod deformation and contusion connecting rod.In addition, because the wall of connecting rob bushing is thinner, between the small end endoporus of the outer surface of connecting rob bushing and connecting rod by interference fit, the magnitude of interference is larger, and the material of connecting rod and connecting rob bushing is different, so that both coefficient of expansion difference are larger, connecting rod and connecting rob bushing are in use through after being heated and cooling off repeatedly, both distortion are also different, and therefore, the common instrument of difficult employing disassembles or assemble new connecting rob bushing with connecting rob bushing from the small end endoporus of connecting rod.For the connecting rob bushing of some big-block engines, its diameter is generally larger, and external form is often irregular, therefore, dismantles connecting rob bushing or new lining is installed just more difficult from the small end endoporus of connecting rod.
Summary of the invention
The object of the invention is to provide for weak point of the prior art a kind of dismantling device of connecting rob bushing, the dismantling device of this connecting rob bushing can be dismantled relatively easily connecting rob bushing or new lining is installed from the small end endoporus of connecting rod.
For achieving the above object, the present invention is achieved through the following technical solutions.
A kind of dismantling device of connecting rob bushing, comprise dismantling device main body and link supports frame, described dismantling device main body and link supports frame are separate, and described dismantling device main body comprises that base for supporting, pressure head, first support pressing plate, hydraulic jack, standing screw and the second support pressing plate;
The middle part of described base for supporting is provided with base holes; Described standing screw is two, and described two standing screws are individually fixed in the both ends of base for supporting;
Described first supports pressing plate is set in described standing screw, and described first supports pressing plate can move up and down along described standing screw; Described second supports pressing plate is set in described standing screw, and described second supports the upper end that pressing plate is fixed in described standing screw; Described second supports the top that pressing plate is arranged at described the first support pressing plate;
Described hydraulic jack be positioned over described first support pressing plate above; Described hydraulic jack is arranged at first and supports between pressing plate and the second support pressing plate;
Described pressure head is arranged at described base for supporting and described first and supports between the pressing plate.
The described first both ends of supporting pressing plate and the second support pressing plate respectively are provided with a circular hole, and described the first support pressing plate and second supports pressing plate and utilizes respectively described circle hole sleeve to be loaded on described standing screw.
Described second supports pressing plate is fixed in described standing screw by nut upper end.
The both ends of described base for supporting respectively are provided with a screw, and described standing screw is bolted in described screw.
Described standing screw is fixed in described base for supporting by nut.
Described pressure head comprises the large end of pressure head and pressure head small end, and the upper end of described pressure head small end is fixed by socket in the inner chamber of the large end of described pressure head.
The bottom cross section of the large end of described pressure head is the inclined-plane.
Described link supports frame comprises connecting rod lower supporting plate and connecting rod upper backup pad, and described connecting rod upper backup pad is fixed in the upper surface of described connecting rod lower supporting plate.
Described connecting rod upper backup pad is fixed in the middle part of the upper surface of described connecting rod lower supporting plate by screw.
A kind of dismounting process of dismantling device of connecting rob bushing, it may further comprise the steps:
The first step, installation steps:
A, base for supporting is placed on the smooth workbench or ground;
B, the wrist-pin end of connecting rod with lining of connecting rod is placed on the base holes orifice edge of base for supporting, the connecting rod tip of connecting rod is placed on the link supports plate;
C, the pressure head small end of pressure head is put into connecting rob bushing, make the stress surface contact intact;
D, two standing screws are fixed on the base for supporting;
E, support the circle hole sleeve of pressing plate by its both ends with first and be loaded on two standing screws, and with first support pressing plate be placed on pressure head above;
F, with hydraulic jack be placed on first support pressing plate above;
G, two nuts are set with in two standing screws;
H, support the circle hole sleeve of pressing plate by its both ends with second and be loaded on two standing screws, and with second support pressing plate be placed on hydraulic jack above, make the second support pressing plate be parallel to first and support pressing plate, two other nut is set with in two standing screws, supports pressing plate by four nuts with second and be fixed in standing screw;
Second step, the demounting procedure of the lining that has damaged:
I, install by the method for the first step after, use hydraulic jack evenly toward pressing down, make the top of hydraulic jack withstand the second support pressing plate, at this moment connecting rob bushing slowly is forced out under the effect of power, until connecting rob bushing is forced out in the base holes of falling into base for supporting;
J, finish the dismounting of connecting rob bushing of connecting rod after, hydraulic jack is taken off, and takes off successively first and support pressing plate, pressure head, connecting rod and connecting rob bushing;
The 3rd step, the installation of new connecting rob bushing:
K, the connecting rod that takes off in the above-mentioned second step is placed on the smooth workbench or ground;
L, utilize the lining sleeve to entangle the new connecting rob bushing after, put the place, aperture that the wrist-pin end of connecting rod that is placed on above-mentioned connecting rod is taken out in cooling in the container of containing liquid nitrogen after five to six minutes into, trap from the upper end of lining sleeve is past with liner sleeve again, with connecting rob bushing ejector sleeve sleeve, make the connecting rob bushing of ejector sleeve sleeve be positioned at the upper end of the endoporus of wrist-pin end of connecting rod;
The wrist-pin end of connecting rod of the connecting rod of m, the connecting rob bushing of will having good positioning is placed on the base holes orifice edge of base for supporting, and the connecting rod tip of connecting rod is placed on the link supports plate;
N, the pressure head small end of pressure head is inserted in the connecting rob bushing of upper end of the above-mentioned endoporus that has been positioned at wrist-pin end of connecting rod;
O, then with first support pressing plate be placed on pressure head above;
P, with hydraulic jack be placed on first support pressing plate above, and make the top of hydraulic jack withstand second support pressing plate below;
Q, use hydraulic jack are evenly toward pressing down, until new connecting rob bushing is compressed into the hole of the wrist-pin end of connecting rod of connecting rod.
Beneficial effect of the present invention: the dismantling device of a kind of connecting rob bushing of the present invention, comprise dismantling device main body and link supports frame, dismantling device main body and link supports frame are separate, and the dismantling device main body comprises that base for supporting, pressure head, first support pressing plate, hydraulic jack, standing screw and the second support pressing plate; The middle part of base for supporting is provided with base holes; Standing screw is two, and two standing screws are individually fixed in the both ends of base for supporting; First supports pressing plate is set in standing screw, and first supports pressing plate can move up and down along standing screw; Second supports pressing plate is set in standing screw, and second supports the upper end that pressing plate is fixed in standing screw; Second supports the top that pressing plate is arranged at the first support pressing plate; Hydraulic jack be positioned over first support pressing plate above; Hydraulic jack is arranged at first and supports between pressing plate and the second support pressing plate; Pressure head is arranged at base for supporting and first and supports between the pressing plate.The present invention can dismantle relatively easily connecting rob bushing or new lining is installed from the small end endoporus of connecting rod.The present invention protects connecting rod not damaged when the dismounting connecting rob bushing well, so that connecting rod can reuse, thereby saves cost.And the present invention is more laborsaving and easy to operate when the dismounting connecting rob bushing.
Description of drawings
Fig. 1 is the structural representation of dismantling device main body of the embodiment 1 of the dismantling device of a kind of connecting rob bushing of the present invention and dismounting process thereof.
Fig. 2 is the decomposing schematic representation of dismantling device main body of the embodiment 1 of the dismantling device of a kind of connecting rob bushing of the present invention and dismounting process thereof.
Fig. 3 is the use view of embodiment 1 when the dismounting connecting rob bushing of dismantling device and the dismounting process thereof of a kind of connecting rob bushing of the present invention.
Fig. 4 is the structural representation of link supports frame of the embodiment 1 of the dismantling device of a kind of connecting rob bushing of the present invention and dismounting process thereof.
Fig. 5 is the structural representation of the connecting rod that connecting rob bushing is housed of the embodiment 1 of the dismantling device of a kind of connecting rob bushing of the present invention and dismounting process thereof.
Fig. 6 is the cutaway view of the connecting rod that connecting rob bushing is housed of the embodiment 1 of the dismantling device of a kind of connecting rob bushing of the present invention and dismounting process thereof.
Fig. 7 is the cutaway view of liner sleeve of the embodiment 2 of the dismantling device of a kind of connecting rob bushing of the present invention and dismounting process thereof.
Fig. 8 is the cutaway view of lining sleeve of the embodiment 2 of the dismantling device of a kind of connecting rob bushing of the present invention and dismounting process thereof.
The Reference numeral of Fig. 1 to Fig. 8:
101--dismantling device main body, 102--link supports frame, the 103--liner sleeve, 104--lining sleeve, 201-connecting rod, the 1--base for supporting, the 2--pressure head, 3--first supports pressing plate, the 4--hydraulic jack, the 5--standing screw, 6--second supports pressing plate, the 7--nut, the 8--base holes, the 9--screw, the large end of 10-pressure head, 11-pressure head small end, 21--connecting rod lower supporting plate, 22--connecting rod upper backup pad, 31--connecting rod middle-end, the 32--wrist-pin end of connecting rod, the 33--connecting rod tip, the 34--lining, the 53--screw, the 54--spring, the 55--steel ball.
The specific embodiment
The invention will be further described with the following Examples.
Embodiment 1.
See Fig. 1 to Fig. 6.The dismantling device of a kind of connecting rob bushing of present embodiment, comprise dismantling device main body 101 and link supports frame 102, dismantling device main body 101 and link supports frame 102 are separate, the dismantling device of this connecting rob bushing is in the process of dismounting connecting rob bushing 34, wrist-pin end of connecting rod 32 is connected in dismantling device main body 101, connecting rod tip 33 is connected in link supports frame 102, this link supports frame 102 mainly plays the large end 33 of support link when dismounting connecting rob bushing 34, thereby makes whole connecting rod 201 be in poised state.
In the present embodiment, the internal diameter size of connecting
rob bushing 34 is φ 85
Mm, the outside dimension of connecting
rob bushing 34 are φ 95
Mm, the endoporus of wrist-pin end of connecting
rod 32 is of a size of φ 95
Mm, the magnitude of interference that the endoporus of wrist-pin end of connecting
rod 32 cooperates with connecting
rob bushing 34 is 0.04~0.085 mm.
Dismantling device main body 101 comprises that base for supporting 1, pressure head 2, first support pressing plate 3, hydraulic jack 4, standing screw 5 and the second support pressing plate 6;
The middle part of base for supporting 1 is provided with base holes 8, the contour structures of base for supporting 1 is that the contour structures according to wrist-pin end of connecting rod 32 designs and processes, because the both ends of the surface of wrist-pin end of connecting rod 32 and connecting rob bushing 34 are the inclined-plane, therefore, the end face of the base holes 8 of base for supporting 1 need to be processed into according to the end face of wrist-pin end of connecting rod 32 and connecting rob bushing 34 end face of same size and angle.Base for supporting 1 mainly plays support link small end 32.In dismounting with during mounting bush 34, base for supporting 1 makes connecting rod 201 and lining 34 stressed even, thereby prevents that connecting rod 201 or lining 34 from producing local deformation because of unbalance stress.
The both ends of base for supporting 1 respectively are provided with a screw 9, and standing screw 5 is two, and two standing screws 5 are bolted in respectively two screws 9.Two standing screws 5 also can be fixed in base for supporting 1 by two nuts respectively.
Pressure head 2 is to be processed by 45 steel through Quenching Treatment, and
pressure head 2 comprises the
large end 10 of pressure head and pressure head
small end 11, and the upper end of pressure head
small end 11 is fixed by socket in the inner chamber of the
large end 10 of pressure head.Pressure head
small end 11 is of a size of φ 85
Mm, the outside dimension of the
large end 10 of pressure head is φ 94
Mm, when dismounting
lining 34, pressure head
small end 11 is inserted in the hole of connecting rob bushing 34, plays the effect of guiding and radial location.Because the end face of connecting
rob bushing 34 is the inclined-plane, therefore need to be with the pressure head of
pressure head 2 the bottom cross section of
large end 10 be processed into the end face identical with angle with the size of connecting rob bushing 34 end faces, when dismounting and installing connecting
rods lining 34, the bottom inclined-plane of the
large end 10 of pressure head makes the end face of connecting rob bushing 34 stressed evenly, especially avoids new lining to produce distortion when new lining is installed.
Need to have less matched in clearance between the endoporus of pressure head small end 11 and connecting rob bushing 34, guarantee has preferably guidance quality, guaranteeing in dismounting and stressedly during installing connecting rods lining 34 evenly to avoid producing distortion, thus the assembly quality of assurance connecting rod 201 and connecting rob bushing 34.
Pressure head 2 is arranged at base for supporting 1 and first and supports between the pressing plate 3.
The first support pressing plate 3 is set in standing screw 5, the first support pressing plates 3 and can moves up and down along standing screw 5; Second supports pressing plate 6 is set in the upper end that standing screw 5, the second support pressing plates 6 are fixed in standing screw 5; Second supports the top that pressing plate 6 is arranged at the first support pressing plate 3; The first both ends of supporting pressing plate 3 and the second support pressing plate 6 respectively are provided with a circular hole, and the first support pressing plate 3 and second supports pressing plate 6 and utilizes respectively circle hole sleeve to be loaded on standing screw 5.Second supports pressing plate 6 is fixed in standing screw 5 by nut 7 upper end.
The first support pressing plate 3 and second supports pressing plate 6 and all passes through Quenching Treatment, supports hardness and the intensity that pressing plate 3 and second supports pressing plate 6 thereby increase by first, prevents that the first support pressing plate 3 and the second support pressing plate 6 from producing distortion when stressed.
In dismounting with during mounting bush 34, hydraulic jack 4 be positioned over first support pressing plate 3 above, hydraulic jack 4 is arranged at first and supports between pressing plate 3 and the second support pressing plate 6; By the stressed size after calculating connecting rod 201 and lining 34 interference fit, present embodiment selects the hydraulic jack 4 of 3T to be used for dismounting and mounting bush 34.
Link supports frame 102 comprises connecting rod lower supporting plate 21 and connecting rod upper backup pad 22, and connecting rod upper backup pad 22 is fixed in the middle part of the upper surface of connecting rod lower supporting plate 21 by screw.
Embodiment 2.
See Fig. 1 to Fig. 8.The dismounting process of the dismantling device of a kind of connecting rob bushing of present embodiment, it may further comprise the steps:
The first step, installation steps:
A, base for supporting 1 is placed on the smooth workbench or ground;
B, the wrist-pin end of connecting rod 32 with lining 34 of connecting rod 201 is placed on base holes 8 orifice edge of base for supporting 1, the connecting rod tip 33 of connecting rod 201 is placed on the link supports plate 102;
C, the pressure head small end 11 of pressure head 2 is put into connecting rob bushing 34, make the stress surface contact intact;
D, two standing screws 5 are fixed on the base for supporting 1;
E, support the circle hole sleeve of pressing plate 3 by its both ends with first and be loaded on two standing screws 5, and with first support pressing plate 3 be placed on pressure head 2 above;
F, with hydraulic jack 4 be placed on first support pressing plate 3 above;
G, two nuts 7 are set with in two standing screws 5;
H, support the circle hole sleeve of pressing plate 6 by its both ends with second and be loaded on two standing screws 5, and with second support pressing plate 6 be placed on hydraulic jack 4 above, make the second support pressing plate 6 be parallel to first and support pressing plate 3, two other nut 7 is set with in two standing screws 5, supports pressing plate 6 by four nuts 7 with second and be fixed in standing screw 5;
Second step, the demounting procedure of the lining that has damaged:
I, install by the method for the first step after, use hydraulic jack 4 evenly toward pressing down, make the top of hydraulic jack 4 withstand the second support pressing plate 6, at this moment connecting rob bushing 34 slowly is forced out under the effect of power, until connecting rob bushing 34 is forced out in the base holes 8 of falling into base for supporting 1;
J, finish the dismounting of connecting rob bushing 34 of connecting rod 201 after, hydraulic jack 4 is taken off, and takes off successively first and support pressing plate 3, pressure head 2, connecting rod 201 and connecting rob bushing 34;
The 3rd step, the installation of new connecting rob bushing:
K, the connecting rod 201 that takes off in the above-mentioned second step is placed on the smooth workbench or ground;
L, utilize lining sleeve 104 to entangle the new connecting rob bushing 34 after, put the place, aperture that the wrist-pin end of connecting rod 32 that is placed on above-mentioned connecting rod 201 is taken out in cooling in the container of containing liquid nitrogen after five to six minutes into, trap from the upper end of lining sleeve 104 is past with liner sleeve 103 again, with connecting rob bushing 34 ejector sleeve sleeves 104, make the connecting rob bushing 34 of ejector sleeve sleeve 104 be positioned at the upper end of the endoporus of wrist-pin end of connecting rod 32;
The wrist-pin end of connecting rod 32 of the connecting rod 201 of m, the connecting rob bushing 34 of will having good positioning is placed on base holes 8 orifice edge of base for supporting 1, and the connecting rod tip 33 of connecting rod 201 is placed on the link supports plate 102;
N, the pressure head small end 11 of pressure head 2 is inserted in the connecting rob bushing 34 of upper end of the above-mentioned endoporus that has been positioned at wrist-pin end of connecting rod 32;
O, then with first support pressing plate 3 be placed on pressure head 2 above;
P, with hydraulic jack 4 be placed on first support pressing plate 3 above, and make the top of hydraulic jack 4 withstand second support pressing plate 6 below;
Q, use hydraulic jack 4 are evenly toward pressing down, until new connecting rob bushing 34 is compressed into the hole of the wrist-pin end of connecting rod 32 of connecting rod 201.
In the present embodiment, the Main Function of lining sleeve 104 is to put new connecting rob bushing 34 into contain liquid nitrogen container to cool off, again cooled connecting rob bushing 34 is placed on the place, aperture of the wrist-pin end of connecting rod 32 of connecting rod 201, uses again liner sleeve 103 with connecting rob bushing 34 ejector sleeve sleeves 104.Lining sleeve 104 and liner sleeve 103 adopt aluminum profile extrusion to form, and the purpose that adopts aluminium mainly is for alleviating its weight, the convenient use.The bottom of lining sleeve 104 offers circular hole, and this circular hole is equipped with screw 53, spring 54 and steel ball 55, and screw 53 is spirally connected and is fixed in this circular hole, and an end of spring 54 is connected with screw 53, and the other end of spring 54 is connected with steel ball 55.The structures that screw 53, spring 54 and steel ball 55 connect to form mutually successively can be regulated the stressed size between the endoporus of lining sleeve 104 and connecting rob bushing 34.
Above embodiment only is used for technical scheme of the present invention being described but not limiting the scope of the invention; although with reference to preferred embodiment the present invention has been done detailed description; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement technical scheme of the present invention, and not break away from essence and the scope of technical solution of the present invention.