CN209752011U - Adjustable telescopic arm component - Google Patents
Adjustable telescopic arm component Download PDFInfo
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- CN209752011U CN209752011U CN201920399034.0U CN201920399034U CN209752011U CN 209752011 U CN209752011 U CN 209752011U CN 201920399034 U CN201920399034 U CN 201920399034U CN 209752011 U CN209752011 U CN 209752011U
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- telescopic arm
- flexible arm
- sliding block
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Abstract
the utility model relates to a flexible arm technical field, especially a flexible arm subassembly with adjustable, through setting up outer flexible arm and interior flexible arm, interior flexible arm cup joints and just can follow on the inner wall of outer flexible arm stretches out and draws back, is provided with a plurality of through-holes on the outer flexible arm, and flexible arm subassembly with adjustable still includes a plurality of sliders and installation piece, and the slider passes through the installation piece to be fixed on outer flexible arm, and the slider passes the through-hole and contacts with the outer wall of interior flexible arm during fixed, and slider and installation piece include three at least groups, are used for increasing the adjustment pad of slider thickness between slider and installation piece. During operation, the adjusting pad that increases can increase the slider and be in outer flexible arm and the thickness that interior flexible arm extends the part, and this kind of structure has replaced traditional adoption and has attacked on the slider structure that the external screw thread adjusted with the number of turns of screw thread and extend thickness, has solved the diameter restriction of external screw thread slider shape and area of contact, thereby what lead to the problem that the connecting plate is out of shape easily.
Description
Technical Field
the utility model relates to a flexible arm technical field, especially a flexible arm component with adjustable.
background
At present, a lifting fire truck mostly adopts a synchronous telescopic boom structure form, a fixed slide block is adopted between a boom and the boom for limiting, and the telescopic inner telescopic boom is limited to shake in the horizontal and vertical directions; because the unable accurate assurance of manufacturing precision, there is the error actual cantilever crane cross sectional dimension with design cantilever crane cross sectional dimension, so the slider of arranging just needs to possess the adjustment function in clearance, wherein, the main part with outer telescopic boom is divided into four faces, the bottom plate face promptly, left side ventral plate face, right side ventral plate face and roof face, the bottom slider that corresponds, side slider and top slider, under general conditions, do not carry out clearance adjustment to the bottom slider that sets up in the bottom, the bottom slider only need be fixed in outer telescopic boom the bottom plate can, and side slider and top slider then need play the effect of the adjustment in clearance, current conventional art probably can be divided into two types:
The first conventional technology is as follows: as shown in fig. 1, in the installation of the sliding block and the adjustment of the gap in fig. 1, the telescopic boom needs to be preassembled firstly, then the gap between the boom support and the boom support is measured, the adjusting pad 10 with a certain thickness is additionally installed between the outer telescopic boom 1 and the side sliding block 14 according to the gap, the adjusting pad 10 is added after the inner telescopic boom 2 is taken out when the gap adjustment of the sliding block is carried out each time, and the inner telescopic boom 2 needs to be repeatedly disassembled when the thickness of the adjusting pad 10 is not proper until the gap adjustment is proper;
The disadvantages are as follows: in the slider mounting and gap adjusting mode in fig. 1, the operation of increasing or decreasing the thickness of the adjusting pad 10 is inconvenient, the gap adjusting precision is poor, and the debugging workload is large;
the second conventional technique is: as shown in fig. 2, the top slider in fig. 2 is mounted and adjusted with a gap in the same way as the side slider 14 in fig. 1, but the sliders on both sides are cylindrical sliders 15 and are mounted with a screw thread to adjust the gap. The specific installation and clearance adjustment mode is as follows: the inner telescopic arm comprises a left web plate, a right web plate, a cylindrical sliding block 15, an inner telescopic wall and an outer telescopic arm 1, wherein inner threaded holes are formed in the web plate edge close to the joint of the plates and the web plate edge close to the outer telescopic arm 1;
the disadvantages are as follows: installation and clearance adjustment mode of side slider 14 are simple in fig. 2, but need attack the external screw thread on cylindrical slider 15 or the installed part that corresponds, manufacturing procedure is more complicated, be limited to cylindrical slider 15 shape for circular, cylindrical slider 15 is little with the contact surface area of interior telescopic arm 2, the diameter of contact surface is only the same with the thread diameter, can't increase cylindrical slider 15 and the interior telescopic arm 2 web area that is close to roof or bottom plate department as far as possible, the small size atress is big simultaneously, also make interior telescopic arm 2 web pressurized too big easily, lead to the web to warp.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: to attack the external screw thread on the slider for telescopic boom clearance adjustment among the prior art, manufacturing procedure is complicated, and the diameter of external screw thread has restricted slider shape and area of contact, causes web or roof to warp easily to lead to telescopic boom work to rock unstable problem, provide a telescopic boom subassembly with adjustable.
In order to realize the purpose, the utility model discloses a technical scheme be:
An adjustable telescopic arm assembly is characterized by comprising an outer telescopic arm and an inner telescopic arm, wherein the inner telescopic arm is sleeved on the inner wall of the outer telescopic arm and can be telescopic along the inner wall of the outer telescopic arm; each through hole is correspondingly provided with one sliding block, the sliding blocks are fixedly arranged on the outer telescopic arm through the mounting pieces, and the sliding blocks penetrate through the through holes to be in contact with the outer wall of the inner telescopic arm during fixing;
At least one adjusting pad is arranged between each sliding block and the corresponding mounting piece.
The utility model discloses a set up outer telescopic boom and interior telescopic boom, interior telescopic boom cup joints on the inner wall of outer telescopic boom and the said inner wall that can follow outer telescopic boom stretches out and draws back, outer telescopic boom includes bottom plate, left web, roof and right web, all be equipped with at least one through-hole on left web, roof and the right web, each said through-hole correspondence is equipped with a set of slider subassembly, each set of slider subassembly includes one said slider and an installation piece, the said slider passes through the said installation piece is fixed to be set up on the said outer telescopic boom, when fixed the said slider passes the said through-hole with the outer wall of interior telescopic boom contacts; and an adjustment pad between the slider and the mounting tab for increasing the thickness of the slider. When the adjusting device works, the thickness of the extending part of the sliding block between the outer telescopic arm and the inner telescopic arm can be increased through the added adjusting pad, the extending thickness of the sliding block is adjusted through the adjusting pad arranged between the mounting piece and the sliding block, the traditional structure that the extending thickness is adjusted through tapping external threads on the sliding block is replaced, the problem that the processing procedure is complex is solved, the horizontal direction gap between the outer telescopic arm and the inner telescopic arm is adjusted through adjusting the thickness of the sliding block on the left web plate and the right web plate, the vertical direction gap between the outer telescopic arm and the inner telescopic arm is adjusted through adjusting the thickness of the sliding block on the top plate, the adjustment of the gap is convenient and efficient, in addition, the external threads are not tapped on the sliding block, so the new structure can also increase the contact area between the sliding block and the inner telescopic arm, the contact area is not limited by the diameter of the thread any more, and the problem that the shape and the contact area of the sliding block are limited by the diameter of the external thread, so that the stress of the connecting plate is overlarge is solved; during the installation, will each group slider and installation piece set up respectively on the left web of outer telescopic boom, right web and the roof, will every slider and installation piece all set up on each connecting plate is close to the face of junction in the outer telescopic boom, solved because connecting plate center punishment long term atress is out of shape easily, the back of warping when producing concertina movement between outer telescopic boom and the interior telescopic boom, thereby interior telescopic boom can take place to rock and lead to the unstable problem of telescopic boom operation.
Through the increase area of contact between slider and the interior telescopic boom, solved the diameter of external screw thread in traditional slider structure and restricted slider shape and area of contact to lead to the connecting plate atress is too big, the unstable problem is rocked in telescopic boom during operation.
preferably, the adjustable telescopic arm assembly further comprises a bottom sliding block, and the bottom sliding block is fixed on the inner surface of the bottom plate through a bolt.
Preferably, the size of the adjusting pad is smaller than that of the sliding block, and the adjusting pad is fixed between the sliding block and the mounting piece through a first bolt.
Preferably, the mounting piece is fixed to the outer telescopic arm by a second bolt.
preferably, the slider is square, and the through hole is a square through hole.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
The utility model discloses a set up outer telescopic boom and interior telescopic boom, interior telescopic boom cup joints on the inner wall of outer telescopic boom and the said inner wall that can follow outer telescopic boom stretches out and draws back, outer telescopic boom includes bottom plate, left web, roof and right web, all be equipped with at least one through-hole on left web, roof and the right web, each said through-hole correspondence is equipped with a set of slider subassembly, each set of slider subassembly includes one said slider and an installation piece, the said slider passes through the said installation piece is fixed to be set up on the said outer telescopic boom, when fixed the said slider passes the said through-hole with the outer wall of interior telescopic boom contacts; and an adjustment pad between the slider and the mounting tab for increasing the thickness of the slider. When the adjusting device works, the thickness of the extending part of the sliding block between the outer telescopic arm and the inner telescopic arm can be increased through the added adjusting pad, the extending thickness of the sliding block is adjusted through the adjusting pad arranged between the mounting piece and the sliding block, the traditional structure that the extending thickness is adjusted through tapping external threads on the sliding block is replaced, the problem that the processing procedure is complex is solved, the horizontal direction gap between the outer telescopic arm and the inner telescopic arm is adjusted through adjusting the thickness of the sliding block on the left web plate and the right web plate, the vertical direction gap between the outer telescopic arm and the inner telescopic arm is adjusted through adjusting the thickness of the sliding block on the top plate, the adjustment of the gap is convenient and efficient, in addition, the external threads are not tapped on the sliding block, so the new structure can also increase the contact area between the sliding block and the inner telescopic arm, the contact area is not limited by the diameter of the thread any more, and the problem that the shape and the contact area of the sliding block are limited by the diameter of the external thread, so that the stress of the connecting plate is overlarge is solved; during the installation, will each group slider and installation piece set up respectively on the left web of outer telescopic boom, right web and the roof, will every slider and installation piece all set up on each connecting plate is close to the face of junction in the outer telescopic boom, solved because connecting plate center punishment long term atress is out of shape easily, the back of warping when producing concertina movement between outer telescopic boom and the interior telescopic boom, thereby interior telescopic boom can take place to rock and lead to the unstable problem of telescopic boom operation.
through the increase area of contact between slider and the interior telescopic boom, solved the diameter of external screw thread in traditional slider structure and restricted slider shape and area of contact to lead to the connecting plate atress is too big, the unstable problem is rocked in telescopic boom during operation.
Drawings
FIG. 1 is a schematic diagram of a first conventional technique;
FIG. 2 is a schematic diagram of a second conventional technique;
FIG. 3 is a three-dimensional exploded view of an adjustable telescopic arm assembly;
FIG. 4 is a three-dimensional block diagram of an adjustable telescopic arm assembly;
figure 5 is a two-dimensional block diagram of an adjustable telescopic arm assembly.
the labels in the figure are: 1-outer telescopic arm, 2-inner telescopic arm, 3-through hole, 4-sliding block, 5-mounting piece, 6-bottom plate, 7-left web plate, 8-top plate, 9-right web plate, 10-adjusting pad, 11-bottom sliding block, 12-first bolt, 13-second bolt, 14-side sliding block and 15-cylindrical sliding block.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
as shown in fig. 1, in the operation schematic diagram of the first conventional technology, the installation of the side slider 14 and the adjustment of the gap both need to pre-assemble the inner telescopic arm 2 and the outer telescopic arm 1, then measure the gap between the outer surface of the inner telescopic arm 2 and the inner surface of the outer telescopic arm 1, according to the gap, add the adjustment pad 10 with a certain thickness between the outer telescopic arm 1 and the side slider 14, and the adjustment of the gap of the side slider 14 needs to be performed each time, and then the adjustment pad 10 is added after the inner telescopic arm 2 is taken out.
Referring to fig. 2, the second conventional art is shown in the schematic diagram, in fig. 2, the top slider is mounted and the gap is adjusted in the same way as the side slider 14 in fig. 1, but cylindrical sliders 15 are used on both sides, and the gap is adjusted by screw thread mounting. The specific installation and clearance adjustment mode is as follows: the inner telescopic arm structure is characterized in that inner threaded holes are formed in the web plate edge close to the joint of the plate and the web plate edge close to the outer telescopic arm 1, a cylindrical sliding block 15 is arranged, and outer threads corresponding to the inner threads are tapped on the cylindrical sliding block 15;
as shown in fig. 3, a three-dimensional exploded view of an adjustable telescopic arm assembly, comprising an outer telescopic arm 1 and an inner telescopic arm 2, the inner telescopic arm 2 is sleeved on the inner wall of the outer telescopic arm 1 and can be telescopic along the inner wall of the outer telescopic arm 1, the outer telescopic arm 1 comprises a bottom plate 6, a left web 7, a top plate 8 and a right web 9, at least one through hole 3 is formed in each of the left web 7, the top plate 8 and the right web 9, each through hole 3 is correspondingly provided with a group of sliding block assemblies, each group of sliding block assemblies comprises a sliding block 4 and a mounting piece 5, one sliding block 4 is correspondingly arranged in one through hole 3, the sliding block 4 is fixedly arranged on the outer telescopic arm 1 through the mounting piece 5, and the sliding block 4 penetrates through the through hole 3 to be in contact with the outer wall of the inner telescopic arm 2 during fixing;
The outer telescopic boom 1 is formed by sequentially connecting 4 connecting plates, namely a bottom plate 6, a left web 7, a top plate 8 and a right web 9, the sliding block assemblies comprise at least three groups which are respectively arranged on the left web 7, the right web 9 and the top plate 8 of the outer telescopic boom 1, each group of sliding block assemblies comprises one sliding block 4 and one mounting piece 5, and each group of sliding block assemblies is arranged on the plate surface of each connecting plate in the outer telescopic boom 1 close to the joint;
When only one through hole 3 is arranged on the connecting plate, the length of the sliding block 4 is larger than one half of the width of the plate surface of the corresponding connecting plate; when the number of the through holes on the connecting plate is not less than two, the length of the sliding block 4 is less than one half of the width of the plate surface of the corresponding connecting plate.
In this embodiment, the left web 7 and the right web 9 both include two through holes 3, i.e. two sets of the slider assemblies, and the through holes 3 on the top plate 8 are 1, i.e. only one set of the slider assemblies.
The adjustable telescopic arm assembly further comprises an adjusting pad 10, the adjusting pad 10 is fixedly arranged between the sliding block 4 and the mounting piece 5, the adjusting pad 10 is used for increasing the thickness of the sliding block 4, and all the sliding blocks 4 are used for realizing the non-contact relative sliding between the inner telescopic arm 2 and the outer telescopic arm 1;
The adjustable telescopic arm component further comprises a bottom sliding block 11, and the bottom sliding block 11 is fixed on the inner surface of the bottom plate 6 through bolts.
Threaded holes matched with the second bolts 13 in size need to be machined in the top plate 8, the left web plate 7 and the right web plate 9 of the outer telescopic arm 1.
The size of the adjusting pad is smaller than that of the sliding block 4, and the adjusting pad is fixed between the sliding block 4 and the mounting piece 5 through a first bolt 12.
The mounting piece 5 is fixed to the outer telescopic arm 1 by a second bolt 13.
the slider 4 is square, the through hole 3 is a square through hole, in this embodiment, a rectangular through hole in a square is taken as an example, the through hole 3 may be a rectangular through hole, and may also be a parallelogram through hole with four non-right angles. The slider 4 may also be circular.
as shown in fig. 3 and 4, in this embodiment, the slider assemblies on the left web 7 and the right web 9 are two sets, when the number of the through holes 3 on the surface of the connecting plate is not less than two, the length of the slider 4 in each set of slider assemblies is less than one half of the width of the surface of the corresponding connecting plate, two of the through holes 3 on the surface of the same connecting plate are symmetrically arranged with the central line of the corresponding connecting plate, and through symmetrical arrangement, each through hole 3 is arranged on the surface close to the joint, so that the problem that the operation of the inner telescopic arm 2 and the outer telescopic arm 1 is unstable due to the deformation of the left web 7 or the right web 9 caused by long-term stress in the middle of the left web 7 or the right web 9 when the slider 4 is arranged in the middle of the left web.
When the same connecting plate surface only comprises one through hole 3, namely only comprises one set of the sliding block assemblies, namely the sliding block assemblies on the top plate 8 are in one set as shown in fig. 3 and 4, the length of the sliding block 4 is larger than one half of the width of the top plate 8, the sliding block assemblies are adapted to the width of the corresponding connecting plate surface, and the top plate 8 is stressed uniformly.
The slider assembly is fixed by the first bolt 12 through the mounting piece 5.
Through the adjustment on left web 7 and the right web 9 the thickness adjustment of slider 4 the gap of horizontal direction between outer telescopic boom 1 and the interior telescopic boom 2, through the adjustment on the roof 8 the thickness adjustment of slider 4 the gap of vertical direction between outer telescopic boom 1 and the interior telescopic boom 2.
As shown in fig. 5, a two-dimensional structure diagram of an adjustable telescopic arm assembly is shown, wherein an outer telescopic arm 1 is sleeved on an inner telescopic arm 2, a main body of the outer telescopic arm 1 is composed of a plurality of connecting plates, namely a bottom plate 6, a left web 7, a top plate 8 and a right web 9 are sequentially connected, the top plate 8 is provided with a slider 4 with a length adapted to the width of the surface of the top plate 8, the left web 7 and the right web 9 are respectively provided with two groups of symmetrically arranged slider assemblies, and the deformation of the outer telescopic arm 1 caused by the stress of the slider 4 and an installation sheet 5 is avoided; the bottom slide block 11 is fixedly arranged on the bottom plate 6 of the outer telescopic arm 1.
Example 2
when roof 8, left web 7 and right web 9 all only include two through-holes 3, include six sets of slider assembly promptly, first set of slider assembly sets up on roof 8 near roof 8 and left web 7 junction, second set of slider assembly sets up on roof 8 near roof 8 and right web 9 junction, third set of slider assembly sets up on left web 7 near roof 8 and left web 7 junction, fourth set of slider assembly sets up on left web 7 near left web 7 and bottom plate 6 junction, fifth set of slider assembly sets up on right web 9 near roof 8 and right web 9 junction, sixth set of slider assembly sets up on right web 9 near right web 9 and bottom junction.
Wherein, the installation conditions of the third group of the slide assemblies and the fourth group of the slide assemblies on the left web 7 are the same as the installation conditions of the fifth group of the slide assemblies and the sixth group of the slide assemblies on the right web 9 in the left web 7 and the right web 9 shown in fig. 3 and 4.
Example 3
When the top plate 8, the left web 7 and the right web 9 each comprise only one set of the slider assemblies, the length of the slider 4 in the first set of the slider assemblies is greater than one-half of the width of the top plate 8, the length of the slider 4 in the second set of the slider assemblies is greater than one-half of the width of the left web 7, and the length of the slider 4 in the third set of the slider assemblies is greater than one-half of the width of the right web 9.
Wherein the first set of the slider assemblies are mounted on the top plate 8 as in the case of the top plate 8 shown in fig. 3 and 4.
Example 4
An adjustable telescopic arm component mounting method comprises the following steps:
Step one, machining through holes 3 with the size matched with a sliding block 4 on a top plate 8, a left web plate 7 and a right web plate 9 of an outer telescopic arm 1, and machining threaded holes with the size matched with a second bolt 13 on the top plate 8, the left web plate 7 and the right web plate 9 of the outer telescopic arm 1;
Step two, fixedly arranging a bottom sliding block 11 on a bottom plate 6 of the outer telescopic arm 1;
Step three, assembling the inner telescopic arm 2 in the outer telescopic arm 1, wherein a certain gap is formed between the outer surface of the inner telescopic arm 2 and the inner surface of the outer telescopic arm 1;
Measuring a gap value between the outer surface of the inner telescopic arm 2 and the inner surface of the outer telescopic arm 1, wherein the gap value comprises a horizontal gap value and a vertical gap value, arranging the adjusting pad 10 with the adaptive thickness in the first group of sliding blocks 4 and the mounting pieces 5 according to the vertical gap value, and arranging the adjusting pad 10 with the adaptive thickness in the second group of sliding blocks 4 and the mounting pieces 5 and the third group of sliding blocks 4 and the mounting pieces 5 according to the horizontal gap value;
and step five, fixedly connecting the sliding blocks 4, the adjusting pads 10 and the mounting pieces 5 in the groups of the sliding blocks 4 and the mounting pieces 5 through first bolts 12, arranging the first group of the sliding blocks 4 and the mounting pieces 5 on the top plate 8 through second bolts 13, arranging the second group of the sliding blocks 4 and the mounting pieces 5 on the left web plate 7, and arranging the third group of the sliding blocks 4 and the mounting pieces 5 on the right web plate 9.
In the fourth step, when the adjusting pad 10 with the adaptive thickness is selected, a plurality of adjusting pads 10 with the same or/and different thicknesses are selected and superposed to form the adjusting pad.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. An adjustable telescopic arm assembly is characterized by comprising an outer telescopic arm (1) and an inner telescopic arm (2), wherein the inner telescopic arm (2) is sleeved on the inner wall of the outer telescopic arm (1) and can be stretched along the inner wall of the outer telescopic arm (1), the outer telescopic arm (1) comprises a bottom plate (6), a left web (7), a top plate (8) and a right web (9), at least one through hole (3) is formed in each of the left web (7), the top plate (8) and the right web (9), each through hole (3) is correspondingly provided with a group of sliding block assemblies, and each group of sliding block assemblies comprises a sliding block (4) and an installation piece (5); each through hole (3) is correspondingly provided with one sliding block (4), each sliding block (4) is fixedly arranged on the outer telescopic arm (1) through the mounting piece (5), and the sliding blocks (4) penetrate through the through holes (3) to be in contact with the outer wall of the inner telescopic arm (2) during fixing;
At least one adjusting pad is arranged between each sliding block (4) and the corresponding mounting piece (5).
2. the adjustable telescopic arm assembly of claim 1, further comprising a bottom slider (11), wherein the bottom slider (11) is bolted to the inner surface of the base plate (6).
3. An adjustable telescopic arm assembly according to any of claims 1-2, c h a r a c t e r i z e d in that the adjustment pad is smaller in size than the slide (4), the adjustment pad being fixed between the slide (4) and the mounting plate (5) by means of a first bolt (12).
4. An adjustable telescopic arm assembly according to claim 3, characterised in that said mounting plate (5) is fixed to said outer telescopic arm (1) by means of a second bolt (13).
5. The adjustable telescopic arm assembly according to claim 4, wherein the slide (4) is square and the through hole (3) is a square through hole (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920399034.0U CN209752011U (en) | 2019-03-27 | 2019-03-27 | Adjustable telescopic arm component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920399034.0U CN209752011U (en) | 2019-03-27 | 2019-03-27 | Adjustable telescopic arm component |
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| CN209752011U true CN209752011U (en) | 2019-12-10 |
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| CN201920399034.0U Active CN209752011U (en) | 2019-03-27 | 2019-03-27 | Adjustable telescopic arm component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109847245A (en) * | 2019-03-27 | 2019-06-07 | 四川川消消防车辆制造有限公司 | A kind of adjustable telescopic arm component and installation method |
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2019
- 2019-03-27 CN CN201920399034.0U patent/CN209752011U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109847245A (en) * | 2019-03-27 | 2019-06-07 | 四川川消消防车辆制造有限公司 | A kind of adjustable telescopic arm component and installation method |
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