CN220220956U - Crawler belt derailment prevention thrust wheel of crawler crane - Google Patents
Crawler belt derailment prevention thrust wheel of crawler crane Download PDFInfo
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- CN220220956U CN220220956U CN202321910796.5U CN202321910796U CN220220956U CN 220220956 U CN220220956 U CN 220220956U CN 202321910796 U CN202321910796 U CN 202321910796U CN 220220956 U CN220220956 U CN 220220956U
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- 230000002265 prevention Effects 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims description 25
- 230000000694 effects Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 description 8
- 230000000670 limiting effect Effects 0.000 description 6
- 230000008602 contraction Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a crawler belt derailment prevention thrust wheel of a crawler crane, which comprises a thrust wheel adjusting frame and a thrust wheel, wherein the thrust wheel adjusting frame is arranged on a walking frame in a crawler belt assembly, the thrust wheel is arranged on a mounting frame in the thrust wheel adjusting frame, a sliding block and a first telescopic mechanism are arranged on the mounting frame, and the thrust wheel moves up and down relative to the walking frame under the action of the sliding block and the first telescopic mechanism on the mounting frame. The advantage utilizes the interval of the thrust wheel of thrust wheel alignment jig dynamic adjustment thrust wheel and track upper rail chain of installing on the walking frame, makes the thrust wheel contact with the rail chain always, effectively avoids the thrust wheel derailment problem, utilizes the diameter of the additional wheel dynamic adjustment thrust wheel of setting up the scalable adjustment on the thrust wheel again simultaneously for the thrust wheel contacts with the rail chain always, further strengthens the result of use, avoids the thrust wheel derailment problem.
Description
Technical Field
The utility model particularly relates to a crawler belt derailing prevention thrust wheel of a crawler crane.
Background
The track wheel belongs to one wheel in four wheels of a chassis of crawler engineering machinery, the main effect of the track wheel is to support the weight of the engineering machinery, the track wheel rolls on a guide rail (rail chain link) or a crawler plate surface of a crawler, the track wheel is also used for limiting the crawler to prevent transverse slipping, when a tractor turns, the track wheel forces the crawler to slip on the ground, the track wheel limits the rail chain through flanges at two ends, but the height of the flange is lower (the diameter is small), when the crawler walks, the ground is uneven (especially the heights of two sides of the crawler are uneven) or the crawler is suspended, the track chain can jump up the track wheel, the flange is lost to limit the track, the derailment of the track wheel occurs, the existing device is generally used for welding guard plates at two sides of the track chain, the track wheel is positioned between two mounting beams, the guard plates are limited in height due to the limitation of the crawler, and when the track is jumped up to the flange of the track wheel, the guard plates are easy to jump up the guard plates to derailment due to the fact that the guard plates are in a plate-shaped structure, and the guard plates can always contact with the track rails, so that abrasion is caused.
In chinese patent: 202120529245.9, the name is: the utility model provides a record in anti-derailment wear-resisting thrust wheel, includes main wheel body, sealing plug, pivot and bearing, its characterized in that: the inside of the main wheel body is provided with the sealing plug, be provided with the anticreep structure on the lateral wall of the main wheel body, the anticreep structure includes spacing groove, reinforcing metal ring, spacing post and ceramic particle layer, the spacing groove sets up on the lateral wall of the main wheel body, the inside fixedly connected with of spacing groove strengthens the metal ring, and is provided with the ceramic particle layer on the lateral wall of reinforcing the metal ring, the both sides of spacing groove all are provided with spacing post, the inside fixedly connected with bearing of the main wheel body, and the inside of main wheel body and bearing all runs through there is the pivot, the fixing base is all installed to the both sides of pivot, the both sides of the main wheel body all are provided with dust-proof structure.
As shown in the drawing of patent 202120529245.9, the height of the flange table is mainly increased by using limit posts arranged at two sides of flange beside the limit groove, and the diameter of the flange table is theoretically increased to achieve the aim of preventing derailment, but in practice, the diameter of the flange table is limited by a track shoe and a track chain, and the situation that the flange table cannot be installed due to the increased diameter cannot achieve the expected effect exists.
Disclosure of Invention
The utility model aims to solve the technical problem that the supporting wheel is easy to derail when the crawler belt walks on uneven ground or is suspended in the air in the technical background.
Aiming at the technical problems, the crawler belt derailing prevention supporting wheel of the crawler crane is provided; the method is realized by the following technical scheme: the utility model provides a crawler crane track anticreep rail thrust wheel, includes thrust wheel alignment jig and thrust wheel, and the thrust wheel alignment jig sets up on the walking frame in the track assembly, and the thrust wheel sets up on the mounting bracket in the thrust wheel alignment jig, is provided with slider and first telescopic machanism on the mounting bracket, the thrust wheel is slider and first telescopic machanism's effect down for the walking frame up-and-down motion on the mounting bracket.
According to the utility model, the interval between the supporting wheel and the track upper rail chain is dynamically adjusted by utilizing the supporting wheel adjusting frame arranged on the walking frame, so that the supporting wheel is always contacted with the track chain, the problem of derailment of the supporting wheel is effectively avoided, and meanwhile, the diameter of the supporting wheel is dynamically adjusted by utilizing the additional wheel which is arranged on the supporting wheel and can be adjusted in an expanding way, so that the supporting wheel is always contacted with the track chain, the using effect is further enhanced, and the problem of derailment of the supporting wheel is avoided.
According to the technical scheme, the side sliding plates are arranged on two sides of the mounting frame, the sliding ways for sliding the sliding blocks are arranged on the side sliding plates, the two side sliding plates are connected through the fixing plate, one end of the first telescopic mechanism is arranged on the mounting frame, the other end of the first telescopic mechanism is arranged on the fixing plate, and the side sliding plates are arranged to facilitate the up-and-down movement of the thrust wheels along the side sliding plates, so that the side sliding frame is convenient to use.
The telescopic mechanism comprises a first sleeve and a first loop bar, wherein the first loop bar is inserted into the first sleeve, and a first reset spring is arranged in the first sleeve and the first loop bar, so that when the crawler belt is suspended, the supporting wheel can automatically extend out, the supporting wheel is always clamped on a track chain, derailment is prevented, and the telescopic mechanism is convenient to use.
According to the technical scheme, at least two sets of telescopic mechanisms are arranged between the fixed plate and the mounting frame, so that stable telescopic of the mounting frame for mounting the thrust wheel is effectively enhanced, and stable operation of the device is ensured.
According to the technical scheme, the track roller comprises an inner roller body and an additional roller covered outside the inner roller body, the inner roller body is connected with the additional roller through a second telescopic mechanism, the additional roller can radially and outwardly expand and contract along the inner roller body under the action of the second telescopic mechanism, and the track roller can automatically expand and increase in diameter when the track is suspended, so that the track roller is always clamped on a track chain, derailment is prevented, and the track roller is convenient to use.
The additional wheel is composed of a plurality of independent arc-shaped wheel pieces, each wheel piece is connected with the inner wheel body through a second telescopic mechanism, a space is reserved between every two wheel pieces, a corrugated sealing bag for sealing the wheel pieces is arranged in the space, the arrangement of the corrugated sealing bag enhances the sealing of the expanded wheel pieces, sundries are prevented from falling in, and the service life of the device is prolonged.
The wheel sheet comprises a flange table and a shoulder, wherein the flange table on the wheel sheet is lapped on the outer side of a rail chain in the crawler assembly, and the arrangement strengthens the limit of the thrust wheel, prevents derailment and is convenient to use.
The corrugated sealing bags are distributed around the wheel sheets, so that the sealing of the periphery of the wheel sheets after expansion is enhanced, sundries are prevented from falling into the corrugated sealing bags, and the service life of the device is prolonged.
The second telescopic mechanism is provided with a plurality of sets on the wheel sheet, so that the stability of the expansion or contraction process of the wheel sheet is enhanced, and the stable operation of the device is ensured.
Compared with the prior art, the utility model has the following beneficial effects:
according to the technical scheme, the gap between the supporting wheel and the track upper rail chain is dynamically adjusted by using the supporting wheel adjusting frame arranged on the walking frame, so that the supporting wheel is always contacted with the track chain, the problem of derailment of the supporting wheel is effectively avoided, and meanwhile, the diameter of the supporting wheel is dynamically adjusted by using the additional wheel which is arranged on the supporting wheel and can be adjusted in an expanding manner, so that the supporting wheel is always contacted with the track chain, the using effect is further enhanced, and the problem of derailment of the supporting wheel is avoided.
Drawings
FIG. 1 is a schematic perspective view of embodiment 1 of the present utility model;
FIG. 2 is an exploded view of the thrust wheel adjustment frame;
FIG. 3 is a partial cross-sectional view of the thrust wheel adjustment frame;
FIG. 4 is a schematic perspective view of a thrust wheel;
FIG. 5 is a partial cross-sectional view of the thrust wheel;
FIG. 6 is a schematic perspective view of embodiment 2 of the present utility model;
FIG. 7 is a schematic perspective view of embodiment 3 of the present utility model;
reference numerals illustrate: 1-thrust wheel regulating frame, 101-mounting frame, 102-slider, 103-side slider, 104-slideway, 105-shrouding, 106-fixed plate, 107-first telescopic mechanism, 108-first sleeve, 109-first loop bar, 110-first reset spring, 111-fixed card, 2-thrust wheel, 201-inner wheel body, 202-additional wheel, 203-wheel piece, 204-flange platform, 205-shoulder, 206-ripple seal bag, 207-second telescopic mechanism, 208-second sleeve, 209-second loop bar, 210-second reset spring, 211-limit platform.
Detailed Description
The following describes the technical solution in the embodiment of the present utility model in detail with reference to fig. 1 to 7 in the embodiment of the present utility model.
Example 1
As shown in fig. 1, a crawler belt derailment prevention thrust wheel of a crawler crane mainly comprises a thrust wheel adjusting frame 1 and a thrust wheel 2.
As shown in fig. 1, 2 and 3, the thrust wheel adjusting frame 1 includes a mounting frame 101, a side sliding plate 103 and a fixing plate 106, the mounting frame 101 is a metal clamping plate having a U shape with a certain thickness, the interval between two vertical arms of the mounting frame 101 is slightly larger than the length of the thrust wheel 2, the thrust wheel 2 is guaranteed to be mounted on the mounting frame 101 and can freely rotate around the axial direction, a semicircular through hole is formed in the middle of the end parts of the two vertical arms of the mounting frame 101, a connecting shaft on the thrust wheel 2 can be directly placed in the semicircular hole, in order to fix the thrust wheel 2 on the mounting frame 101, an arc fixing clamp 111 is further fixed on the end parts of the two vertical arms of the mounting frame 101 by screws, an entire circle can be formed by the arc on the fixing clamp 111 and the arc on the straight arm of the mounting frame 101, and the thrust wheel 2 is clamped in the circle and freely rotates around the axial direction.
In order to facilitate the up-and-down sliding of the mounting frame 101, two rectangular metal sliding blocks 102 are welded at two ends of a cross arm above the mounting frame 101, the sliding blocks 102 can slide up and down in a slideway 104 in a side sliding plate 103, and in order to ensure the normal weighing capacity of the thrust wheel 2, the materials of the mounting frame 101, the sliding blocks 102 and the side sliding plate 103 are used and the size of the material meets the use conditions.
The side sliding plate 103 is a T-shaped metal plate with a certain thickness, two side sliding plates are arranged at two vertical arms of the installation frame 101 respectively, the upper ends of the side sliding plates 103 are connected through the fixing plate 106, a rectangular slideway 104 penetrating the side sliding plate 103 is formed on the surface of the side sliding plate 103 perpendicular to the side sliding plate 103, the slideway 104 is rectangular, and the sliding block 102 is placed in the slideway 104 and can move up and down along the slideway 104.
In order to facilitate the mounting and limiting of the side slide plate 103, a boss is outwardly extended near the circular through hole on the two vertical arms of the fixing clip 111, and the side slide plate 103 is placed on the boss.
In order to facilitate the protection of the slide 104 and prevent larger sundries from falling into the slide 104, a sealing plate 105 is fixed outside the side sliding plate 103 by screws, the outer contour of the sealing plate 105 is communicated with the side sliding plate 103, a rectangular through hole corresponding to the slide 104 is also formed in the sealing plate 105, the size of the rectangular through hole is smaller than that of the slide 104, the large sundries cannot fall into the slide 104, the small sundries can be discharged through the hole or manually drawn out, and the through hole can be freely adjusted according to requirements for facilitating the practical use.
In order to facilitate the up-and-down movement of the thrust wheel 2 along the slide 104, two first telescopic mechanisms 107 are installed between the mounting frame 101 and the fixing plate 106, the first telescopic mechanisms 107 mainly comprise a first sleeve 108 and a first sleeve 109, the first sleeve 108 is a hollow cylindrical tube, one end of the first sleeve 108 is welded on the fixing plate 106, the first sleeve 109 is a hollow cylindrical rod, one end of the first sleeve 109 is welded on a cross arm of the mounting frame 101, the first sleeve 109 is inserted in the first sleeve 108 and can move freely up and down, a first return spring 110 is placed in the first sleeve 108 and the first sleeve 109, the first return spring 110 is a compression spring, and when the first sleeve 108 and the first sleeve 109 are close, the first return spring 110 is compressed, and when the force applied to the first sleeve 108 and the first sleeve 109 is eliminated or reduced, the first return spring 110 rebounds.
Regarding the length dynamic adjustment mode of the thrust wheel adjusting frame 1, when the track is normally used, the thrust wheel 2 arranged on the thrust wheel adjusting frame 1 is contacted with the rail chain, so that the normal limiting effect is achieved, and when the track is suspended, the mounting frame 101 on the thrust wheel adjusting frame 1 extends along the slideway 104 under the action of the first reset spring 110 in the first telescopic mechanism 107, so that the thrust wheel 2 is always contacted with the rail chain, and derailment is prevented.
As shown in fig. 1, 4 and 5, the thrust wheel 2 includes an inner wheel body 201 and an additional wheel 202 covered on the outer side of the inner wheel body 201, and the inner wheel body 201 and the additional wheel 202 are connected by a second telescopic mechanism 207.
The inner wheel 201 is a cylindrical metal column, a circular through hole for installing a connecting shaft is formed in the circular side surface of the inner wheel 201 and perpendicular to the side surface through the center of a circle, and in order to facilitate the rotation of the thrust wheel 2 along the connecting shaft, bearings (not shown in the figure) are respectively arranged in the holes at the two ends of the inner wheel 201, the inner wheel 201 can freely rotate along the axial direction through the bearings, and in order to ensure the stable operation of the device, sealing covers for preventing sundries from entering are arranged at the bearings.
The additional wheel 202 is composed of a plurality of independent arc-shaped wheel pieces 203, in this embodiment, four wheel pieces 203 are connected with the inner wheel body 201 through a second telescopic mechanism 207, a space is reserved between every two wheel pieces 203, a ripple sealing bag 206 for sealing the wheel pieces 203 is arranged in the space, one end of the ripple sealing bag 206 is connected to the inner wheel body 201, the other end of the ripple sealing bag 206 is connected to the wheel pieces 203, when the wheel pieces 203 expand under the action of the second telescopic mechanism 207, the ripple sealing bag 206 can be expanded along with the expansion, sundries are prevented from falling in, in order to ensure the sealing effect, the ripple sealing bag 206 is arranged around the wheel pieces 203, in order to prevent the ripple sealing bag 206 from influencing the normal expansion and contraction of the wheel pieces 203, the ripple sealing bag 206 is arranged on the side walls around the wheel pieces 203 and cannot be contacted with the upper working surface and the lower working surface of the wheel pieces 203.
The bellows seal 206 is a conventional device, which can be used directly, and the bellows seal 206 can be replaced by a device with similar function to the bellows seal 206 and can play the same role, and can be selected according to requirements and conditions.
The wheel piece 203 is an arc-shaped metal piece with a certain length, the length of the wheel piece 203 is the same as that of the inner wheel body 201, the radian of the inner surface of the wheel piece 203 is the same as that of the outer surface of the inner wheel body 201, the whole wheel piece 203 can be tightly attached to the surface of the inner wheel body 201, and a plurality of wheel pieces 203 are uniformly distributed on the surface of the inner wheel body 201.
On the arc terminal surface of wheel piece 203 both sides, along wheel piece 203 surface along wheel piece 203 radian, outwards extend there is a rectangular flange platform 204, the whole rail chain department of card on the track of flange platform 204 carries out spacingly to thrust wheel 2, inwards extend along the wheel piece 203 profile at the medial surface of flange platform 204 has the circular bead 205 of one section slope, such setting can make thrust wheel 2 and rail chain's joint department have circular bead 205 buffering, prevent that the rail chain is direct to contact with flange platform 204, lead to flange platform 204 wearing and tearing, prolonged the life of flange platform 204.
On the arc surface of the inner wheel body 201, a plurality of circular holes for mounting the second socket rods 209 are formed perpendicular to the inner wheel body 201, and the second socket rods 209 are fixed in the circular holes by screws.
The second telescopic mechanism 207 mainly comprises a second sleeve 208 and a second sleeve rod 209, the inner diameter of the second sleeve 208 is slightly larger than the outer diameter of the second sleeve rod 209, the second sleeve 208 is a hollow cylindrical tube, one end of the second sleeve rod 209 is fixed on the inner surface of the wheel piece 203 through a screw, the second sleeve rod 209 is a hollow cylindrical rod, one end of the second sleeve rod 209 is fixed in a circular hole on the inner wheel body 201 through a screw, the second sleeve rod 209 is inserted in the second sleeve 208 and can move freely up and down, a second reset spring 210 is placed in the second sleeve 208 and the second sleeve rod 209, the second reset spring 210 is a compression spring, when the second sleeve 208 and the second sleeve rod 209 are close, the second reset spring 210 compresses, and when the force applied to the second sleeve 208 and the second sleeve rod 209 is eliminated or reduced, the second reset spring 210 rebounds.
In order to limit the space between the second sleeve rod 209 and the second sleeve rod 208, a section of limiting table 211 is protruded along a cylindrical arc at the end ports of the second sleeve rod 208 and the second sleeve rod 209, and the limiting tables 211 on the second sleeve rod 208 and the second sleeve rod 209 are mutually overlapped to prevent the second sleeve rod 209 from falling off from the second sleeve rod 208.
In order to facilitate use and ensure stability of operation of the wheel 203, the second telescopic mechanism 207 is provided with three sets in the wheel 203, and the wheel 203 can be detached individually for replacement by releasing the screws between the wheel 203 and the second telescopic mechanism 207.
Regarding the length dynamic adjustment mode of the thrust wheel 2, when the track is normally used, the thrust wheel 2 arranged on the thrust wheel adjusting frame 1 is contacted with the rail chain, so that the normal limiting effect is achieved, when the track is suspended, the wheel piece 203 arranged on the inner wheel body 201 is radially and outwards expanded along the inner wheel body 201 under the action of the second telescopic mechanism 207, the flange table 204 on the wheel piece 203 is always contacted with the rail chain, derailment is prevented, and when the track is contacted with the ground again, the wheel piece 203 is retracted again under the action of the second telescopic mechanism 207.
Example 2
As shown in fig. 6, the thrust wheel adjusting frame 1 and the thrust wheel 2 of the present utility model may be used in combination or separately, and the thrust wheel 2 which may be adjusted in embodiment 1 may be replaced with an existing conventional thrust wheel based on the thrust wheel adjusting frame 1 in embodiment 1, and the thrust wheel adjusting frame 1 may be used separately to play a role in adjusting derailment prevention.
Example 3
As shown in fig. 7, the thrust wheel adjusting frame 1 and the thrust wheel 2 of the present utility model may be used in combination, or may be used alone, and on the basis of the thrust wheel 2 in embodiment 1, the thrust wheel 2 may be directly mounted on an existing track assembly to replace the existing thrust wheel, and the thrust wheel 2 alone may be used to achieve the effect of adjusting derailment by using dynamic expansion and contraction of the thrust wheel 2 itself.
The above embodiments are only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited thereto, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the present utility model.
Claims (9)
1. The utility model provides a crawler crane track anticreep rail thrust wheel which characterized in that: including thrust wheel alignment jig (1) and thrust wheel (2), thrust wheel alignment jig (1) sets up on the walking frame in the track assembly, and thrust wheel (2) set up on mounting bracket (101) in thrust wheel alignment jig (1), are provided with slider (102) and first telescopic machanism (107) on mounting bracket (101), thrust wheel (2) are slider (102) and first telescopic machanism's (107) effect down for the walking frame up-and-down motion on mounting bracket (101).
2. The crawler belt derailment prevention thrust wheel of a crawler crane according to claim 1, wherein: the two sides of the installation frame (101) are provided with side sliding plates (103), the side sliding plates (103) are provided with sliding ways (104) for sliding of the sliding blocks (102), the two side sliding plates (103) are connected through the fixing plate (105), one end of the first telescopic mechanism (107) is arranged on the installation frame (101), and the other end of the first telescopic mechanism is arranged on the fixing plate (105).
3. The crawler belt derailment prevention thrust wheel of a crawler crane according to claim 1, wherein: the telescopic mechanism (107) comprises a first sleeve (108) and a first sleeve rod (109), wherein the first sleeve rod (109) is inserted into the first sleeve (108), and a first reset spring (110) is arranged in the first sleeve (108) and the first sleeve rod (109).
4. A crawler belt derailment prevention thrust wheel for a crawler crane according to claim 3, wherein: at least two telescopic mechanisms (107) are arranged between the fixed plate (105) and the mounting frame (101).
5. The crawler belt derailment prevention thrust wheel of a crawler crane according to claim 1, wherein: the thrust wheel (2) comprises an inner wheel body (201) and an additional wheel (202) covered outside the inner wheel body (201), wherein the inner wheel body (201) and the additional wheel (202) are connected through a second telescopic mechanism (207), and the additional wheel (202) can radially expand and contract outwards along the inner wheel body (201) under the action of the second telescopic mechanism (207).
6. The crawler belt derailment prevention thrust wheel for a crawler crane according to claim 5, wherein: the additional wheel (202) is composed of a plurality of independent arc-shaped wheel pieces (203), each wheel piece (203) is connected with the inner wheel body (201) through a second telescopic mechanism (207), a space is reserved between every two wheel pieces (203), and a corrugated sealing bag (206) for sealing the wheel pieces (203) is arranged in the space.
7. The crawler belt derailment prevention thrust wheel for a crawler crane according to claim 6, wherein: the wheel plate (203) comprises a flange table (204) and a shoulder (205), and the flange table (204) on the wheel plate (203) is lapped on the outer side of a rail chain in the crawler assembly.
8. The crawler belt derailment prevention thrust wheel for a crawler crane according to claim 6, wherein: the ripple sealing bags (206) are arranged in a plurality, and are distributed around the wheel piece (203).
9. The crawler belt derailment prevention thrust wheel for a crawler crane according to claim 5 or 6, wherein: the second telescopic mechanism (207) is provided with a plurality of sets on the wheel piece (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321910796.5U CN220220956U (en) | 2023-07-20 | 2023-07-20 | Crawler belt derailment prevention thrust wheel of crawler crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321910796.5U CN220220956U (en) | 2023-07-20 | 2023-07-20 | Crawler belt derailment prevention thrust wheel of crawler crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220220956U true CN220220956U (en) | 2023-12-22 |
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ID=89178144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321910796.5U Active CN220220956U (en) | 2023-07-20 | 2023-07-20 | Crawler belt derailment prevention thrust wheel of crawler crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220220956U (en) |
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2023
- 2023-07-20 CN CN202321910796.5U patent/CN220220956U/en active Active
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