CN204458796U - A kind of pressure-bearing type joint and crawler crane boom system thereof - Google Patents
A kind of pressure-bearing type joint and crawler crane boom system thereof Download PDFInfo
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- CN204458796U CN204458796U CN201520063053.8U CN201520063053U CN204458796U CN 204458796 U CN204458796 U CN 204458796U CN 201520063053 U CN201520063053 U CN 201520063053U CN 204458796 U CN204458796 U CN 204458796U
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Abstract
A kind of pressure-bearing type joint, comprise pressure-bearing list joint, pressure-bearing twin adapter and bearing pin, pressure-bearing list joint comprises the first base plate and the first otic placode perpendicular to the first base plate, the surface that first base plate accepts the first otic placode is the first plane, pressure-bearing twin adapter comprises the second base plate and the second otic placode perpendicular to the second base plate, the surface of the free end of the second otic placode is the second plane fitted with the first plane of the first base plate, many one of the quantity of number ratio first otic placode of the second otic placode, and the second otic placode and the first otic placode interval are arranged, first otic placode, second otic placode is equipped with pin shaft hole, bearing pin runs through pin shaft hole and connects the first otic placode, second otic placode.A kind of pressure-bearing type joint that the utility model provides, cooperatively interacted by the first plane and the second plane and be close to, the two rigid contact bears pressure, simultaneously, use the crawler crane boom system of this pressure-bearing type joint, the boundary dimension of this boom system can be reduced, save parking space and cost of transportation.
Description
Technical field
The utility model belongs to technical field of crane equipment, is specifically related to a kind of pressure-bearing type joint and crawler crane boom system thereof.
Background technique
In engineering reality, the flexible connection of crawler crane boom system parts much all adopts and is articulated and connected.At present, the joint be connected for two parts has following three kinds, the first is the generic connectivity joint shown in accompanying drawing 1, this kind of joint both can bear pressure stress, also can bear pulling force, this kind of joint carrys out bearing load mainly through bearing pin, and load is delivered to next connecting end by the otic placode of joint both sides, to bearing pin and jointing requirements higher, accompanying drawing 2 is its open mode; The second is knuckle joint shown in accompanying drawing 3, the bearing pin overlapping otic placode by the arc recess of jaw and fork adapts and bears pressure, only be suitable for the occasion of only bearing unidirectional pressurized in work, this kind of joint bears pressure loading mainly through bearing pin, and load is delivered to next connecting end by the otic placode of joint both sides, to bearing pin and jointing requirements higher, and be connected two parts without being fixedly connected with, accompanying drawing 4 is its open mode; The third is the bolt type jointing shown in accompanying drawing 5, connects, be mainly used in jib vertical direction and bear normal load operating mode for flange pressure-bearing.
There is following problem in above three kinds of joints: 1, only relies on bearing pin to carry out bearing load and transmitted load, bearing mode is curved surface carrying, as shown in Figure 6, because bearing pin stress area is limited, the stress produced under equal conditions is larger, and discontinuity, the generation that easily to cause that stress is concentrated etc. on-the-spot, higher to the requirement of bearing pin and joint; 2, rely on bearing pin to bear and special delivery load, can produce larger shearing stress, shearing stress is the major way destroying bearing pin; 3, strengthened by pin diameter in Practical Project, material is strengthened, and bearing pin weight can be caused like this to increase, and cost increases; Pin diameter increase also can cause joint dimension to increase, and weight increases, and cost increases; 4, the joints size that the profile transportation clearance of crawler crane boom system is used by it determines, the increase of joint dimension can cause the boundary dimension of integral arms frame system to increase, and increases and places and transport difficulty, increases cost of transportation; 5, only rely on shaft hole matching to bear and transmitted load to the quality of fit of bearing pin and pin shaft hole and tolerance higher, the difficulty of processing of bearing pin and pin shaft hole increases, and cost increases, and quality of fit is high simultaneously causes assembling more difficult.
It can thus be appreciated that existing joint connection scheme, only relies on bearing pin to bear and transmitted load, higher to the requirement of bearing pin and joint, because bearing pin stress area is limited, be easy to cause discontinuity, the on-the-spot generation such as stress is concentrated.Done by pin diameter greatly in Practical Project, material is strengthened, and the boundary dimension of structural member can be made like this to strengthen, and weight increases, and produces the increase of cost.And in some cases, bearing pin mainly bears pressure at work, higher to the requirement of bearing pin.
Model utility content
In order to solve the deficiencies in the prior art, the utility model provides a kind of pressure-bearing type joint, for mainly bearing the operating mode of pressure loading, comprise pressure-bearing list joint and pressure-bearing twin adapter two-part, by bearing pin, pressure-bearing list joint, pressure-bearing twin adapter are connected, on pressure-bearing list joint, on the first plane of the first base plate and pressure-bearing twin adapter, the second plane of the second otic placode free end cooperatively interacts and is close to, the two rigid contact bears pressure, and as joint bearing area, power is passed to next connecting end by the first plane, the second plane.Meanwhile, use the crawler crane boom system of this pressure-bearing type joint, the boundary dimension of this boom system can be reduced, save parking space and cost of transportation.
For solving the problem, the utility model specifically by the following technical solutions:
A kind of pressure-bearing type joint, it is characterized in that, comprise pressure-bearing list joint, pressure-bearing twin adapter and connection pressure-bearing list joint, the bearing pin of pressure-bearing twin adapter, described pressure-bearing list joint, pressure-bearing twin adapter is connected with connecting end corresponding separately respectively, described pressure-bearing list joint comprises the first base plate and the first otic placode perpendicular to the first base plate, the surface that described first base plate accepts the first otic placode is the first plane, described pressure-bearing twin adapter comprises the second base plate and the second otic placode perpendicular to the second base plate, the surface of the free end of described second otic placode is the second plane fitted with the first plane of the first base plate, many one of the quantity of number ratio first otic placode of described second otic placode, and the second otic placode and the first otic placode interval are arranged, described first otic placode, second otic placode is equipped with pin shaft hole, described bearing pin runs through pin shaft hole and connects the first otic placode, second otic placode.
Aforesaid a kind of pressure-bearing type joint, is characterized in that, described first otic placode is one, is vertically installed in the middle part of the first base plate.
Aforesaid a kind of pressure-bearing type joint, it is characterized in that, second otic placode corresponding with the first otic placode is two, is symmetrically distributed in the both sides of the first otic placode, and the distance between two the second otic placodes is more than or equal to the thickness of the first otic placode.
Aforesaid a kind of pressure-bearing type joint, is characterized in that, described first otic placode is two, is symmetricly set in the first plane of the first base plate.
Aforesaid a kind of pressure-bearing type joint, is characterized in that, second otic placode corresponding with the first otic placode is set to three, and when pressure-bearing list joint, pressure-bearing twin adapter connect, the first otic placode, the second otic placode are spaced.
Aforesaid a kind of pressure-bearing type joint, is characterized in that, the aperture of the pin shaft hole on described first otic placode, the second otic placode is greater than the diameter of bearing pin.
A kind of crawler crane boom system, is characterized in that, comprise a kind of pressure-bearing type joint as above, and described pressure-bearing type joint is connected with this crawler crane boom system by connecting end corresponding with pressure-bearing list joint, pressure-bearing twin adapter respectively.
The beneficial effects of the utility model: a kind of pressure-bearing type joint that the utility model provides, pressure is born by the end contact of pressure-bearing joint bearing area (i.e. the first plane, the second plane), and by bearing area, power is passed to next connecting end, change pin shaft hole coordinate curved surface bearing mode be planes carry, stressed evenly; Because the contact area of bearing area end face is comparatively large, can reduce the stress of generation under equal conditions, the generation of the phenomenon such as avoid discontinuity, stress is concentrated, improves the stressing conditions of joint; Bear also transmitted load by end face pressure-bearing and can not produce shearing stress, bearing pin is not re-used as main strength part simultaneously, and its stressing conditions is much improved, and pin diameter can reduce, and weight and cost also can reduce; The size of Practical Project middle joint is often determined by pin diameter, and because pin diameter reduces, joint dimension can correspondingly reduce, and weight reduces; The wide arc gap of pin shaft hole coordinates, and can reduce the difficulty of processing to pin shaft hole and bearing pin, easily assemble, and saves the installing/dismounting time, enhances productivity.In addition, the joints size that the profile transportation clearance of crawler crane boom system is used by it determines, the reduction of joint dimension can cause the monnolithic case size of boom system to reduce, and can reduce put area and transport difficulty, saves parking space and cost of transportation.
Accompanying drawing explanation
Fig. 1 is the structural representation of generic connectivity joint in prior art;
Fig. 2 be in prior art generic connectivity joint open schematic diagram;
Fig. 3 is the structural representation of knuckle joint in prior art;
Fig. 4 be in prior art knuckle joint open schematic diagram;
Fig. 5 is the structural representation of bolt type jointing in prior art;
Fig. 6 is the curved surface bearing capacity distribution map of prior art middle joint;
Fig. 7 is the structural representation of pressure-bearing type joint of the present utility model;
Fig. 8 be pressure-bearing type joint of the present utility model open schematic diagram;
Fig. 9 is the structural representation of pressure-bearing twin adapter of the present utility model;
Figure 10 is the structural representation of pressure-bearing list joint of the present utility model;
Figure 11 is pressure-bearing type joint plane bearing capacity distribution map of the present utility model.
Reference character implication is as follows:
1: pressure-bearing list joint; 11: the first base plates; 12: the first otic placodes; 13: the first planes; 2: pressure-bearing twin adapter; 21: the second base plates; 22: the second otic placodes; 23: the second planes; 3: bearing pin; 4: pin shaft hole; 5: connecting end.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Fig. 7 to Figure 11, a kind of pressure-bearing type joint, comprise pressure-bearing list joint 1, pressure-bearing twin adapter 2 and connection pressure-bearing list joint 1, the bearing pin 3 of pressure-bearing twin adapter 2, described pressure-bearing list joint 1, pressure-bearing twin adapter 2 is connected with connecting end 5 corresponding separately respectively, described pressure-bearing list joint 1 comprises the first base plate 11 and the first otic placode 12 perpendicular to the first base plate 11, the surface that described first base plate 11 accepts the first otic placode 12 is the first plane 13, described pressure-bearing twin adapter 2 comprises the second base plate 21 and the second otic placode 22 perpendicular to the second base plate 21, the surface of the free end of described second otic placode 22 is the second plane 23 fitted with the first plane 13 of the first base plate 11, many one of the quantity of number ratio first otic placode 12 of described second otic placode 22, and the second otic placode 22 and the first otic placode 12 interval are arranged, described first otic placode 12, second otic placode 22 is equipped with pin shaft hole 4, described bearing pin 3 runs through pin shaft hole 4 and connects the first otic placode 12, second otic placode 22.
Further, described first otic placode 12 is one, is vertically installed in the middle part of the first base plate 11, and second otic placode 22 corresponding with the first otic placode 12 is two, be symmetrically distributed in the both sides of the first otic placode 12, and the distance between two the second otic placodes 22 is more than or equal to the thickness of the first otic placode 12.
Or described first otic placode is two, be symmetricly set in the first plane of the first base plate, second otic placode corresponding with the first otic placode is set to three, and when pressure-bearing list joint, pressure-bearing twin adapter connect, the first otic placode, the second otic placode are spaced.This kind of pressure-bearing type joint adopts the mode of two three joints connections to connect.The quantity of concrete otic placode carries out regulating according to actual needs.
Further, the aperture of the pin shaft hole 4 on described first otic placode 12, second otic placode 22 is greater than the diameter of bearing pin 3.
On pressure-bearing list joint 1, the first plane 13 of the first base plate 11 fits with the second plane 23 of the second otic placode 22 free end on pressure-bearing twin adapter 2, bearing area when meaning i.e. the second plane 23 of the first plane 13, second otic placode 22 free end of the first base plate 11 all uses as this pressure-bearing type joint, by carrying out processing process to the first plane 13, second plane 23, make these two bearing area completely can rigid contact.When using in work, on pressure-bearing twin adapter 2, the second plane 23 bearing area of the second otic placode 22 free end contacts with the first plane 13 bearing area of the first base plate 11 on pressure-bearing list joint 1, bear pressure by the rigid contact of contact area, and by this contact area, power is passed to next connecting end.
Simultaneously, aperture due to pin shaft hole 4 is greater than the diameter of bearing pin 3, therefore, bearing pin 3 be not as at present be clamped in pin shaft hole 4 inflexibly through common, but have certain distance with all sides of pin shaft hole 4, namely between pin shaft hole 4 and bearing pin 3, wide arc gap designs, usually, gap between pin shaft hole 4 and bearing pin 3 is 2-3mm, ensure bearing pin 3 not with pin shaft hole 4 tight friction.Realize bearing pin not pressure-bearing by the wide arc gap matching design of axis hole, and pressure-bearing surface first contacts; Bearing pin, as the connecting body of connection two parts, can bear certain pulling force simultaneously.Because bearing area area of contact is comparatively large, the phenomenon such as avoid discontinuity, stress is concentrated; The force way of end pressure-bearing can not produce shearing stress, improves bearing pin and joint stressing conditions.Certainly, in order to prevent bearing pin 3 from getting off from landing in pin shaft hole 4, be provided with plush copper in the end of bearing pin 3, these belong to prior art, do not repeat them here.
A kind of crawler crane boom system, comprises a kind of pressure-bearing type joint described in the utility model.The joints size that the profile transportation clearance of crawler crane boom system is used by it determines, the reduction of joint dimension can cause the monnolithic case size of boom system to reduce, and can reduce put area and transport difficulty, saves parking space and cost of transportation.
More than show and describe basic principle of the present utility model, major character and advantage.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. a pressure-bearing type joint, it is characterized in that, comprise pressure-bearing list joint, pressure-bearing twin adapter and connection pressure-bearing list joint, the bearing pin of pressure-bearing twin adapter, described pressure-bearing list joint, pressure-bearing twin adapter is connected with connecting end corresponding separately respectively, described pressure-bearing list joint comprises the first base plate and the first otic placode perpendicular to the first base plate, the surface that described first base plate accepts the first otic placode is the first plane, described pressure-bearing twin adapter comprises the second base plate and the second otic placode perpendicular to the second base plate, the surface of the free end of described second otic placode is the second plane fitted with the first plane of the first base plate, many one of the quantity of number ratio first otic placode of described second otic placode, and the second otic placode and the first otic placode interval are arranged, described first otic placode, second otic placode is equipped with pin shaft hole, described bearing pin runs through pin shaft hole and connects the first otic placode, second otic placode.
2. a kind of pressure-bearing type joint according to claim 1, is characterized in that, described first otic placode is one, is vertically installed in the middle part of the first base plate.
3. a kind of pressure-bearing type joint according to claim 2, is characterized in that, second otic placode corresponding with the first otic placode is two, is symmetrically distributed in the both sides of the first otic placode, and the distance between two the second otic placodes is more than or equal to the thickness of the first otic placode.
4. a kind of pressure-bearing type joint according to claim 1, is characterized in that, described first otic placode is two, is symmetricly set in the first plane of the first base plate.
5. a kind of pressure-bearing type joint according to claim 4, is characterized in that, second otic placode corresponding with the first otic placode is set to three, and when pressure-bearing list joint, pressure-bearing twin adapter connect, the first otic placode, the second otic placode are spaced.
6. a kind of pressure-bearing type joint according to claim 3 or 5, is characterized in that, the aperture of the pin shaft hole on described first otic placode, the second otic placode is greater than the diameter of bearing pin.
7. a crawler crane boom system, it is characterized in that, comprise a kind of pressure-bearing type joint as claimed in claim 1, described pressure-bearing type joint is connected with this crawler crane boom system by connecting end corresponding with pressure-bearing list joint, pressure-bearing twin adapter respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520063053.8U CN204458796U (en) | 2015-01-29 | 2015-01-29 | A kind of pressure-bearing type joint and crawler crane boom system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520063053.8U CN204458796U (en) | 2015-01-29 | 2015-01-29 | A kind of pressure-bearing type joint and crawler crane boom system thereof |
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| CN204458796U true CN204458796U (en) | 2015-07-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282659A (en) * | 2020-10-14 | 2021-01-29 | 山东科瑞油气装备有限公司 | Manufacturing method of pin hole and end face combined connection type derrick |
| CN113173509A (en) * | 2021-05-14 | 2021-07-27 | 徐州重型机械有限公司 | Boom system and crane |
| CN115325015A (en) * | 2022-07-13 | 2022-11-11 | 太原重工股份有限公司 | Truss arm connecting hinge lug and manufacturing method thereof |
-
2015
- 2015-01-29 CN CN201520063053.8U patent/CN204458796U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282659A (en) * | 2020-10-14 | 2021-01-29 | 山东科瑞油气装备有限公司 | Manufacturing method of pin hole and end face combined connection type derrick |
| CN113173509A (en) * | 2021-05-14 | 2021-07-27 | 徐州重型机械有限公司 | Boom system and crane |
| CN115325015A (en) * | 2022-07-13 | 2022-11-11 | 太原重工股份有限公司 | Truss arm connecting hinge lug and manufacturing method thereof |
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