CN217555620U - Girder structure reinforcing back bow before bridge crane - Google Patents
Girder structure reinforcing back bow before bridge crane Download PDFInfo
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- CN217555620U CN217555620U CN202221513136.9U CN202221513136U CN217555620U CN 217555620 U CN217555620 U CN 217555620U CN 202221513136 U CN202221513136 U CN 202221513136U CN 217555620 U CN217555620 U CN 217555620U
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Abstract
The utility model provides a girder structure strengthens back of body bow before bridge crane for girder head cantilever end and preceding girder pull rod medial extremity before fixed connection, include: the back bow support is fixedly arranged on a cross beam connected with the cantilever end of the head of the front girder and the inner side end of the pull rod of the front girder; and the connecting rods are positioned on two sides of the back bow support, one end of each connecting rod is connected with two ends of the back bow support, and the other end of each connecting rod is fixedly connected with the cantilever end of the head of the front girder and the inner side end of the pull rod of the front girder. According to the utility model discloses girder structure strengthens back of the body bow before the bridge crane, only need install in bridge crane pull rod junction, can effectively disperse the load that slows down preceding girder head cantilever end, realizes the long bridge crane preceding girder structure of extension length and strengthens, and the operation construction is convenient, and the installation is reliable, and the safety risk is little.
Description
Technical Field
The utility model relates to a harbour hoist and mount technical field, concretely relates to girder structure strengthens back of body bow before bridge crane.
Background
At present, due to the fact that a large number of in-service shore bridges cannot meet the loading and unloading requirements of ships due to large-scale ships, heightening, lengthening and modifying of an existing shore container crane (called a shore bridge for short) become an urgent choice for a plurality of wharfs. After the front girder of the shore bridge is lengthened, the strength of the front girder structure is inevitably weakened and the deformation of the free end is increased, and even the deformation and the cracking of the front girder structure are seriously caused, so that the problem that the reinforcement of the front girder structure is urgently needed to be solved is solved.
The method for strengthening the front girder structure commonly used in the current market comprises the following steps: firstly, a partition plate and an angle steel reinforcing rib are added in a front girder box body; and secondly, carrying out plate pasting or plate replacement treatment on the local weak part.
The method for reinforcing the front girder structure has the following disadvantages:
1. the welding workload is large, the welding risk in the box body is large, and extra ventilation equipment needs to be installed;
2. the reinforcing effect is limited, and the reinforcing structure is only suitable for the condition that the lengthened length of the front girder is shorter, and generally does not exceed 3 m;
3. the bottom of the box body is strengthened by the flitch, a scaffold needs to be erected at high altitude, construction difficulty is high, and safety risk is high.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a girder structure strengthens back of body bow before bridge crane through set up the less back of body bow form connecting piece of structure volume before bridge crane between girder head cantilever end and preceding girder pull rod medial extremity to girder structure strengthens before realizing the longer bridge crane of extension length, and the operation construction is convenient, and the installation is reliable, and safe risk is little.
In order to solve the technical problem, the utility model discloses a following technical scheme:
according to the utility model discloses girder structure strengthens back of the body bow before bridge crane for girder head cantilever end and preceding girder pull rod medial extremity before fixed connection, include:
the back bow support is fixedly arranged on a cross beam connected with the cantilever end of the head of the front girder and the inner side end of the pull rod of the front girder;
and the connecting rods are positioned on two sides of the back bow support, one end of each connecting rod is connected with two ends of the back bow support, and the other end of each connecting rod is used for fixedly connecting the cantilever end at the head part of the front girder and the inner side end of the pull rod of the front girder.
Furthermore, the back bow support comprises a support body and a connecting plate, the support body is fixed on the cross beam, two ends of the connecting plate are respectively hinged to one end of the connecting rod, and the middle plate surface of the connecting plate is connected with the side surface of the support body.
Further, the connecting rod is "worker" font, the both ends of connecting rod are equipped with a pair of parallel otic placode respectively, and are a pair of be formed with the breach between the otic placode, a pair of connecting rod one end the otic placode is connected respectively the both ends of connecting plate, the both ends of connecting plate are located respectively in the breach.
Furthermore, the other end of the connecting rod is further connected with a node plate, the pair of lug plates at the other end of the connecting rod is connected with the first end of the node plate, the first end of the node plate is arranged in the gap, and the second end of the node plate is used for being fixedly connected with the cantilever end of the head of the front girder and the inner side end of the pull rod of the front girder respectively.
Further, girder structure strengthens back of the body bow still includes round pin axle assembly before the bridge crane, the first end of gusset plate the both ends of connecting plate pass through round pin axle assembly respectively with the otic placode is connected, round pin axle assembly includes:
the pin shaft penetrates through the first end of the node plate and the two ends of the connecting plate and the lug plate respectively, and a radial groove is formed in the upper surface of a pin head extending section of the pin shaft;
the clamping shaft plate is rectangular, connecting holes are formed in the two ends of the clamping shaft plate, the clamping shaft plate is transversely arranged in the groove, and bolts penetrate through the connecting holes to fix the clamping shaft plate and the lug plate face.
Further, the distance between the groove and the tail of the pin shaft is larger than the thickness of the connecting rod.
Furthermore, the surface of the lug plate corresponding to the groove side of the pin shaft is provided with a screw hole, and the screw hole is matched with the connecting hole and used for screwing the bolt.
Furthermore, the lug plates, the two ends of the connecting plate and the side faces of the first ends of the node plates are respectively connected with a heavy plate, and the pin shaft penetrates through the heavy plate.
Furthermore, the span of the back bow support and the pair of connecting rods after being connected is 5-15 m.
Further, the connection angle between the back bow support and the connecting rod is 15-50 degrees.
The above technical scheme of the utility model one of following beneficial effect has at least:
1. the utility model discloses a back of the body bow design is exquisite, stable in structure, and the suitability is strong, only needs to install in the bridge crane pull rod junction, can effectively disperse the load that slows down preceding girder head cantilever end, preceding girder structural strength and rigidity after effective reinforcing extension.
2. The utility model discloses an on-the-spot welding operation work load is little, and can not destroy the original structure of bridging, easy to carry out, and is safe high-efficient.
Drawings
Fig. 1 is a schematic structural view of a reinforcing back bow of a girder structure before a bridge crane according to an embodiment of the present invention;
FIG. 2 is an enlarged view of the area A in FIG. 1;
fig. 3 is a top view of a reinforcing back bow of a girder structure before a bridge crane according to an embodiment of the present invention;
FIG. 4 is an enlarged view of the area B in FIG. 3;
fig. 5 is a left side view of a reinforcing back bow of a girder structure before a bridge crane according to an embodiment of the present invention;
FIG. 6 is an enlarged view of the area C in FIG. 5;
fig. 7 is a schematic structural view of a pin shaft of a reinforcing back bow of a girder structure before a bridge crane according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a back bow support of a bridge crane front girder structure reinforcing back bow according to an embodiment of the present invention;
fig. 9 is a schematic structural view of a connecting rod of a reinforcing back bow of a girder structure before a bridge crane according to an embodiment of the present invention;
fig. 10 is a top view of a connecting rod of a reinforcing back arch of a girder structure before a bridge crane according to an embodiment of the present invention;
fig. 11 is a schematic structural view of a gusset plate of a reinforcing back bow of a girder structure before a bridge crane according to an embodiment of the present invention;
fig. 12 is a schematic view illustrating a usage status of the reinforcing back bow of the girder structure before the bridge crane according to the embodiment of the present invention;
fig. 13 is a schematic view of another usage state of the reinforcing back bow of the girder structure before the bridge crane according to the embodiment of the present invention.
Reference numerals: 100. a back bow support; 110. a support body; 120. a connecting plate;
200. a connecting rod; 210. an ear plate; 220. a notch;
300. a gusset plate; 310. a gusset plate first end; 320. a gusset plate second end;
400. a heavy duty plate;
500. a pin assembly; 510. a pin shaft; 511. a groove; 520. a shaft clamping plate;
600. the inner side end of the front girder pull rod; 610. a front girder pull rod;
700. a cantilever end at the head of the front girder;
800. a cross beam;
900. and a multi-box-position lengthening section.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and the like in the description of the invention does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
The reinforced back bow of the girder structure before the bridge crane according to the embodiment of the present invention will be described first in detail with reference to the accompanying drawings.
The utility model discloses girder structure strengthens back of body bow before bridge crane for girder head cantilever end 700 and preceding girder pull rod medial extremity 600 before fixed connection, include: a back arch support 100 and a pair of links 200.
The back bow support 100 is fixedly mounted on a cross beam 800 connecting a front girder head cantilever end 700 and a front girder pull rod inner side end 600.
The connecting rods 200 are disposed at both sides of the back bow support 100, one end of each connecting rod is connected to both ends of the back bow support 100, and the other end of each connecting rod is used for fixedly connecting a front girder head cantilever end 700 and a front girder pull rod inner side end 600.
As an example, as shown in fig. 12 and 13, a back bow support 100 of a reinforcing back bow of a front girder structure of a bridge crane is fixedly arranged on a cross beam 800 which is connected with a front girder head cantilever end 700 and a front girder pull rod inner side end 600, a pair of connections 200 are respectively arranged on two sides of the back bow support 100, so that two ends of the back bow support 100 are respectively connected with the front girder head cantilever end 700 and the front girder pull rod inner side end 600 in a diagonal manner to form a whole, and on the premise that the front girder pull rod 310 is in a diagonal manner to the front girder head cantilever end 700, a back bow structure is added near the pull rod, so that partial load of the cantilever end can be effectively transmitted to a front girder body on the inner side of the pull rod, thereby the structural rigidity and strength of the front girder head cantilever end 700 after a multi-box extension section 900 is added are enhanced, and the deformation problem of the front girder extension rear head cantilever end structure is effectively solved.
Further, the back bow support 100 comprises a support body 110 and a connecting plate 120, the support body 110 is fixed on the cross beam 800, two ends of the connecting plate 120 are respectively hinged to one end of the connecting rod 200, and a middle plate surface of the connecting plate 120 is connected to a side surface of the support body 110.
As an example, as shown in fig. 8, the back bow support 100 is provided as two parts of a support body 110 and a connecting plate 120, the support body 110 is fixedly provided on a cross beam to form a fixed position, the connecting plate 120 is provided on a side surface of the support body 110, and both sides of the connecting plate 120 are respectively connected with a connecting rod 200, so that when the back bow support 100 is installed, the support body 110 is installed inside the cross beam 800, the connecting rods 200 are respectively connected with both ends of the connecting plate 120 outside the support body 110, and at this time, the other end of the connecting rod 200 is connected with a front cross beam, and the stress stability is good.
In addition, the hinge angle between the connecting rod 200 and the connecting plate 120 is adjustable, so that the whole span and the stress angle of the reinforced back arch can be adjusted conveniently, and the adaptability of the reinforced back arch is improved.
Further, the connecting rod 200 is in an i shape, two ends of the connecting rod 200 are respectively provided with a pair of parallel ear plates 210, a gap 220 is formed between the pair of ear plates 210, the pair of ear plates 210 at one end of the connecting rod 200 are respectively connected with two ends of the connecting plate 120, and two ends of the connecting plate 120 are respectively arranged in the gap 220.
Further, the other end of the connecting rod 200 is further connected with a node plate 300, a pair of ear plates 210 at the other end of the connecting rod 200 is connected with a first end of the node plate 300, the first end of the node plate 300 is arranged in the gap, and a second end of the node plate 300 is used for fixedly connecting the front girder head cantilever end 700 and the front girder pull rod inner side end 600 respectively.
For example, as shown in fig. 9 and 10, the connecting rod 200 has an i-shape, and a pair of parallel ear plates 210 are formed at both ends of the connecting rod, respectively, and a gap 220 is formed between the ear plates 210. As shown in fig. 1, 3, 5, and 11, one end of the connecting rod 200 is connected to two ends of the connecting plate 120 respectively, so that two ends of the connecting plate 120 are disposed in the gap 220 and connected to the ear plate 210 at the end of the connecting rod 200, the other end of the connecting rod 200 is connected to the node plate 300 through the ear plate 210, the first end 310 of the node plate is disposed in the gap 220 and hinged to the ear plate 210, and the second end 320 of the node plate is welded to fix the front girder head cantilever end 700 and the front girder pull rod inner end 600, i.e., the other end of the connecting rod 200 is transitionally connected to the front girder through the node plate 300, thereby protecting the connecting end of the connecting rod 200 and improving the reliability of welding.
Furtherly, girder structure strengthens back of the body bow still includes round pin axle assembly 500 before the bridge crane, and the first end of gusset plate 300, the both ends of connecting plate 120 are connected with otic placode 210 respectively through round pin axle assembly, and round pin axle assembly 500 includes: a pin 510 and a snap plate 520.
the shaft clamping plate 520 is rectangular, connecting holes are formed in two ends of the shaft clamping plate 520, the shaft clamping plate 520 is transversely arranged in the groove 511, and bolts penetrate through the connecting holes to fixedly connect the shaft clamping plate 520 with the surface of the lug plate 210.
As shown in fig. 2, 4 and 6, for example, the pin 510 of the pin assembly 500 passes through a pair of ear plates 210 to complete the hinge fastening of the corresponding components, while the upper surface of the pin head section of the pin 510 extending out of the surfaces of the ear plates 210 is provided with a groove 511 for accommodating the shaft clamping plate 520, and the shaft clamping plate 520 is disposed in the groove 511 and fixes the two end sides thereof to the corresponding surfaces of the ear plates 210, thereby completing the hinge locking of the pin assembly 500 to the corresponding components and improving the stability of the connection of the components.
Further, the distance between the groove 511 and the shaft tail of the pin 510 is larger than the thickness of the connecting rod 200. That is, this allows the shaft engaging plate 520 to be disposed in the groove 511 to firmly and securely pass the shaft 510 through the pair of ear plates 210.
Furthermore, the surface of the ear plate 210 corresponding to the groove side of the pin 510 is provided with a screw hole, and the screw hole is matched with the connecting hole for screwing a bolt. That is, the surface of the ear plate 210 is provided with a screw hole and a bolt is inserted through the fastening plate 520 to effectively fix the ear plate 210.
Further, a weight plate 400 is connected to the side surfaces of the ear plate 210, both ends of the connection plate 120, and the first end of the gusset plate 300, respectively, and the pin 510 penetrates the weight plate 400.
As an example, as shown in fig. 3 and 5, a heavy plate 400 is attached to the side of the hinge of each component, so that the stressed area of the hole through which the pin 510 passes is increased, the bearing capacity of the overall structure is improved, and the overall structure is not prone to stress deformation.
Further, the span of the back bow support 100 and the pair of links 200 after connection is 5m to 15m.
Further, the connection angle between the back bow support 100 and the link 200 is 15-50 °.
According to as above parameter design application to through the structural analysis of finite element analysis software ANSYS, compare the structural rigidity and the intensity of the preceding girder head cantilever end that traditional approach strengthened, adopt the utility model discloses strengthen the back of the body bow and can make the downwarping value of preceding girder head cantilever end can reduce more than 15%, and the stress value of preceding girder head cantilever end can reduce more than 20%, and it is obvious to strengthen the effect.
Furthermore, the utility model discloses a back of the body bow field weld work load is little, and the original structure and the paint of girder before the destruction that can not be by a large scale are at the box outer weld moreover, and is safe high-efficient, need not extra ventilation equipment.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a girder construction strengthens back bow before bridge crane for girder head cantilever end and preceding girder pull rod medial extremity before fixed connection, its characterized in that includes:
the back bow support is fixedly arranged on a cross beam connected with the cantilever end of the head of the front girder and the inner side end of the pull rod of the front girder;
and the connecting rods are positioned on two sides of the back bow support, one end of each connecting rod is connected with two ends of the back bow support, and the other end of each connecting rod is used for fixedly connecting the cantilever end at the head part of the front girder and the inner side end of the pull rod of the front girder.
2. The front girder structure reinforcing back arch of a bridge crane according to claim 1, wherein the back arch support comprises a support body and a connecting plate, the support body is fixed on the cross beam, two ends of the connecting plate are respectively hinged with one end of the connecting rod, and the middle plate surface of the connecting plate is connected with the side surface of the support body.
3. The front girder structural reinforcing back arch for a bridge crane according to claim 2, wherein the connecting rod is in an i shape, a pair of parallel ear plates are respectively disposed at two ends of the connecting rod, a gap is formed between the pair of ear plates, the pair of ear plates at one end of the connecting rod are respectively connected to two ends of the connecting plate, and two ends of the connecting plate are respectively disposed in the gap.
4. A reinforced back arch of a front girder structure of an bridge crane according to claim 3, wherein a gusset plate is further connected to the other end of the connecting rod, a pair of the ear plates at the other end of the connecting rod is connected to a first end of the gusset plate, the first end of the gusset plate is disposed in the notch, and a second end of the gusset plate is used for fixedly connecting the cantilever end of the head of the front girder and the inner end of the pull rod of the front girder, respectively.
5. The front girder structure reinforcing back arch of a bridge crane according to claim 4, further comprising a pin shaft assembly, wherein the first end of the gusset plate and the two ends of the connecting plate are respectively connected with the ear plates through the pin shaft assembly, and the pin shaft assembly comprises:
the pin shaft penetrates through the first end of the node plate and the two ends of the connecting plate and the lug plate respectively, and a radial groove is formed in the upper surface of a pin head extending section of the pin shaft;
the clamping shaft plate is rectangular, connecting holes are formed in the two ends of the clamping shaft plate, the clamping shaft plate is transversely arranged in the groove, and bolts penetrate through the connecting holes to fix the clamping shaft plate and the lug plate face.
6. A front girder structural reinforcing back arch for an axle crane according to claim 5, wherein the distance between the groove and the pin shaft tail is greater than the thickness of the connecting rod.
7. The front girder structure reinforcing back arch of a bridge crane according to claim 5, wherein the lug plate surface corresponding to the groove side of the pin shaft is provided with a screw hole, and the screw hole is matched with the connecting hole to be screwed with the bolt.
8. A front girder structure reinforcing back arch for a bridge crane according to claim 5, wherein heavy-duty plates are further connected to the side surfaces of the lug plates, the two ends of the connecting plate and the first end of the gusset plate, respectively, and the pin shaft penetrates through the heavy-duty plates.
9. A reinforced back arch of a girder structure before a bridge crane according to claim 1, wherein a span after the back arch support and the pair of connecting rods are connected is 5m to 15m.
10. A front girder structural reinforcing back arch for an industrial truck according to claim 1, wherein a connection angle between the back arch support and the connecting rod is 15 ° to 50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221513136.9U CN217555620U (en) | 2022-06-17 | 2022-06-17 | Girder structure reinforcing back bow before bridge crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221513136.9U CN217555620U (en) | 2022-06-17 | 2022-06-17 | Girder structure reinforcing back bow before bridge crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217555620U true CN217555620U (en) | 2022-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221513136.9U Active CN217555620U (en) | 2022-06-17 | 2022-06-17 | Girder structure reinforcing back bow before bridge crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217555620U (en) |
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2022
- 2022-06-17 CN CN202221513136.9U patent/CN217555620U/en active Active
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