CN114251412B - Balance type constant force furnace tube hanger - Google Patents
Balance type constant force furnace tube hanger Download PDFInfo
- Publication number
- CN114251412B CN114251412B CN202111318902.6A CN202111318902A CN114251412B CN 114251412 B CN114251412 B CN 114251412B CN 202111318902 A CN202111318902 A CN 202111318902A CN 114251412 B CN114251412 B CN 114251412B
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- China
- Prior art keywords
- suspender
- furnace tube
- hanger
- spring
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 210000004907 gland Anatomy 0.000 claims description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 239000000725 suspension Substances 0.000 abstract description 21
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 238000005336 cracking Methods 0.000 abstract description 5
- 230000010354 integration Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Commercial Cooking Devices (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention belongs to the technical field of furnace tube hangers, and relates to a balanced constant force furnace tube hanger, which comprises a main hanger, wherein two ends of the main hanger are respectively connected with one end of a counterweight rod and one end of an adjustable hanger through a counterweight pin shaft and a hanger pin shaft, and the main hanger is connected with a rooting hanger through a main shaft; the counterweight rod is provided with a counterweight block and a counterweight block; the other end of the adjustable suspender is connected with a spring box, the spring box is connected with a plurality of lower suspenders, the upper part of the lower suspender is connected with the spring box, and the bottom end of the lower suspender is provided with a suspender lifting lug. The invention has simple structure, realizes constant high precision of the furnace tube suspension of the heating furnace, has reliable performance and high integration level, and can realize dense structural layout; the flexible suspension has no additional stress, and can effectively avoid weld cracking and deformation of the furnace tube.
Description
Technical Field
The invention relates to a balanced constant force furnace tube hanger, and belongs to the technical field of furnace tube hangers.
Background
The prior art can not meet higher constant force requirements at all because of the large volume structure of the constant force spring hanger, and the prior art can not meet higher constant force requirements at all because of the structure and manufacturing process of the constant force spring hanger, and the phenomenon of causing additional stress to the furnace tube in the use process, thereby causing the cracking and deformation of the welding seam of the furnace tube, and the replacement of the furnace tube can cause the production stoppage of the whole device, thereby generating great economic loss and potential safety hazard.
Disclosure of Invention
The invention aims to solve the technical problems that: the balance type constant force furnace tube hanger is simple in structure, high in accuracy of the furnace tube suspension moment of the heating furnace is achieved, the performance is reliable, the integration level is high, and dense structural layout can be achieved; the flexible suspension has no additional stress, and can effectively avoid weld cracking and deformation of the furnace tube.
The invention relates to a balanced constant force furnace tube hanger, which comprises a main hanger, wherein two ends of the main hanger are respectively connected with one end of a counterweight rod and one end of an adjustable hanger rod through a counterweight pin shaft and a hanger rod pin shaft, and the main hanger is connected with a rooting hanger through a main shaft; the counterweight rod is provided with a counterweight block and a counterweight block; the other end of the adjustable suspender is connected with a spring box, the spring box is connected with a plurality of lower suspenders, the upper part of the lower suspender is connected with the spring box, and the bottom end of the lower suspender is provided with a suspender lifting lug.
In the use process, the lifting rod lifting lug at the bottom end of the lower lifting rod is connected with the furnace tube lifting lug; the balancing weight is the basic counter weight, the balancing weight has multiple different thicknesses, the balancing weight of polylith different thicknesses is selected according to the specific bearing capacity of spring box, make balancing weight and adjustable jib one end of counter weight pole one end can reach the balance, invariable degree precision is higher, and the spring box is connected a plurality of lower booms, can improve the density of heating furnace unit area boiler tube by a wide margin, the additional stress that current constant force spring hanger caused for the boiler tube because of invariable degree is low has been solved, realize the balance of load and counter weight more than 99%, the flexible suspension to the boiler tube is realized in the setting of spring box, welding seam fracture and deformation appear in the boiler tube is avoided.
Preferably, the spring box comprises a box body, a plurality of pairs of corresponding through holes are formed in a top plate and a bottom plate of the box body, a lower suspender penetrates through the top plate and the bottom plate of the box body from the through holes, a spring is sleeved on the periphery of the lower suspender in the box body, the upper part of the lower suspender in the box body penetrates through a gland, a first nut is arranged on the top surface of the gland in the box body and is in threaded connection with the lower suspender, and two ends of the spring are respectively abutted with the bottom plate of the box body and the gland; the adjustable suspender is connected with the top plate of the box body. The adjustable suspender consists of a screw rod with a lifting lug and a flower basket nut, the bottom end of the adjustable suspender is connected with a box top plate, the box top plate is fixedly connected with the side wall of the box through a bolt, and the installation height of the spring box can be adjusted by adjusting the adjustable suspender; the lifting rod lifting lug is connected with the furnace pipe lifting lug, the furnace pipe lifting lug downwards pulls the lower lifting rod to drive the gland compression spring, and the suspension moment of each furnace pipe can be finely adjusted through the position of the first adjusting nut so as to realize the matching with furnace pipes with different lengths; the lower suspender, the gland and the spring cooperate to realize flexible suspension of the furnace tube. The first nut is a double nut, and the locking effect is good. During installation, the top end of the lower suspender on the upper part of the spring box is provided with a second nut, so that the lower suspender is convenient to lock and install, the second nut can be taken down after installation is finished, the second nut can be reserved, and the second nut can not influence the normal operation of the lower suspender.
Preferably, a guide sleeve is additionally arranged on the periphery of the lower suspender below the gland, the gland is in a ladder shape, the top of the guide sleeve is in threaded connection with the small-diameter end of the gland, the lower part of the guide sleeve penetrates out of the bottom plate of the box body, and the spring is sleeved on the periphery of the guide sleeve. The guide sleeve can move up and down along with the up-and-down movement of the gland and the lower suspender, and the lower suspender can swing in a certain amplitude in the guide sleeve, and the guide sleeve enables the lower suspender to have a certain swinging space, so that the lower suspender is more in line with the flexible connection of the spring box and the furnace tube.
Preferably, the main hanger is an A-shaped frame, the counterweight rod is connected with the tip end of the A-shaped frame, the adjustable hanger rod is connected with the opening end of the A-shaped frame, and the two brackets at the opening end of the A-shaped frame are respectively connected with the spring box through the adjustable hanger rod. The two brackets of the A-shaped frame suspend the spring box through the adjustable suspension rod respectively, so that the suspension of the spring box is more stable and reliable, and the spring box is more favorable for keeping a balance state.
The lower suspenders can be arranged in two rows, and the lower suspenders in two rows are arranged in a staggered manner. The two rows of lower suspenders are completely staggered, the two rows of lower suspenders are respectively close to two ends of the spring box, one spring box can suspend 6-12 furnace tubes, the integration level is high, and the suspension device can be widely used for suspending furnace tubes of heating furnaces of petrochemical devices. The arrangement position of the lower boom can be determined according to the position of the actual furnace tube.
Preferably, a positioning plate is fixed at the main hanging bracket connected with the rooting lifting lug, the positioning plate is arc-shaped, a plurality of positioning holes are formed in the positioning plate, the positioning holes are arc-shaped, and the upper part of the rooting lifting lug is connected with the positioning holes through positioning shafts; the top end of the rooting lifting lug is fixedly connected with a rooting beam. During installation, the positioning shaft is inserted into the rooting lifting lug and a proper positioning hole, so that the rooting lifting lug is prevented from shaking all the time, and the installation is convenient; after the installation is finished, the positioning shaft is pulled out, so that the rooting lifting lug can freely rotate in cooperation with the main shaft.
Preferably, a graphite-based self-lubricating shaft sleeve is arranged between the main hanging frame and the main shaft, so that dry self-lubrication is realized.
Preferably, the distance between the main shaft and the counterweight pin shaft is larger than the distance between the main shaft and the suspender pin shaft, so that the counterweight block and the counterweight block with the same weight can balance the furnace tube with larger weight.
Compared with the prior art, the invention has the following beneficial effects:
the invention has simple structure, realizes constant high precision of the suspension moment of the furnace tube of the heating furnace, has reliable performance and high integration level, and can realize dense structural layout; the flexible suspension has no additional stress, and can effectively avoid weld cracking and deformation of the furnace tube.
Drawings
FIG. 1 is a schematic diagram of a balanced constant force furnace tube hanger;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
fig. 4 is a partial enlarged view of C.
In the figure: 1. balancing weight; 2. a balance weight; 3. a weight bar; 4. a counterweight pin shaft; 5. a main hanger; 6.a positioning plate; 7. positioning a shaft; 8. rooting beams; 9. rooting lifting eyes; 10. positioning holes; 11. a main shaft; 12. a boom pin shaft; 13. an adjustable boom; 14. a boom lifting lug; 15. furnace tube lifting lug; 16. graphite-based self-lubricating shaft sleeve; 17. a case; 18. a guide sleeve; 19. a bottom plate; 20. a spring; 21. a second nut; 22. a lower boom; 23. a gland; 24. a first nut; 25. a top plate; 26.a spring box.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
1-4, the balanced constant force furnace tube hanger comprises a main hanger 5, wherein two ends of the main hanger 5 are respectively connected with one end of a counterweight rod 3 and one end of an adjustable hanger rod 13 through a counterweight pin shaft 4 and a hanger rod pin shaft 12, and the main hanger 5 is connected with a rooting hanger 9 through a main shaft 11; the counter weight rod 3 is provided with a counter weight 1 and a counter weight 2; the other end of the adjustable boom 13 is connected with a spring box 26, the spring box 26 is connected with a plurality of lower booms 22, the upper part of the lower boom 22 is connected with the spring box 26, and the bottom end of the lower boom 22 is provided with a boom lifting lug 14.
In this embodiment:
the spring box 26 comprises a box body 17, a plurality of pairs of corresponding through holes are formed in a top plate 25 and a bottom plate 19 of the box body 17, a lower suspension rod 22 penetrates through the top plate 25 and the bottom plate 19 of the box body 17 from the through holes, a spring 20 is sleeved on the periphery of the lower suspension rod 22 in the box body 17, a gland 23 penetrates through the upper part of the lower suspension rod 22 in the box body 17, a first nut 24 is arranged on the top surface of the gland 23 in the box body 17, the first nut 24 is in threaded connection with the lower suspension rod 22, and two ends of the spring 20 are respectively abutted against the bottom plate 19 and the gland 23 of the box body 17; the adjustable boom 13 is connected to the top plate 25 of the housing 17. The adjustable suspender 13 consists of a screw rod with a lifting lug and a flower basket nut, the bottom end of the adjustable suspender 13 is connected with the top plate 25 of the box body 17, the top plate 25 of the box body 17 is fixedly connected with the side wall of the box body 17 through bolts, and the installation height of the spring box 26 can be adjusted by adjusting the adjustable suspender 13; the lifting rod lifting lug 14 is connected with the furnace pipe lifting lug 15, the furnace pipe lifting lug 15 pulls the lower lifting rod 22 downwards to drive the gland 23 to compress the spring 20, and the suspension moment of each furnace pipe can be finely adjusted through the position of the first adjusting nut 24 so as to realize the matching with furnace pipes with different lengths; the lower suspender 22, the gland 23 and the spring 20 cooperate to realize flexible suspension of the furnace tube. The first nut 24 is a double nut, and the locking effect is good. During installation, the top end of the lower suspender 22 at the upper part of the spring box 26 is provided with a second nut 21, so that each part of structure at the lower suspender 22 is conveniently locked and installed, the second nut 21 can be taken down after the installation is finished, the second nut 21 can be reserved, and the reserved second nut 21 cannot influence the normal operation of the lower suspender 22.
The lower boom 22 periphery below the gland 23 is additionally provided with a guide sleeve 18, the gland 23 is in a ladder shape, the top of the guide sleeve 18 is in threaded connection with the small diameter end of the gland 23, the lower part of the guide sleeve 18 penetrates out of the bottom plate 19 of the box 17, and the spring 20 is sleeved on the periphery of the guide sleeve 18. The guide sleeve can move up and down along with the up and down movement of the gland 23 and the lower suspender 22, and the lower suspender 22 can swing within a certain range in the guide sleeve 18, and the arrangement of the guide sleeve 18 enables the lower suspender 22 to have a certain swinging space, so that the flexible connection of the spring box 26 and the furnace tube is more met.
The main hanging bracket 5 is an A-shaped frame, the counterweight rod 3 is connected with the tip end of the A-shaped frame, the adjustable hanging rod 13 is connected with the opening end of the A-shaped frame, and the two brackets at the opening end of the A-shaped frame are respectively connected with the spring box 26 through the adjustable hanging rod 13. The two brackets of the A-shaped bracket suspend the spring box 26 through the adjustable suspension rod 13 respectively, so that the suspension of the spring box 26 is more stable and reliable, and the spring box 26 is more favorable for keeping a balance state.
The plurality of lower booms 22 may be arranged in two rows, with the two rows of lower booms 22 being offset. The two rows of lower suspenders 22 are completely staggered, the two rows of lower suspenders 22 are respectively close to two ends of the spring box 26, one spring box 26 can suspend 6-12 furnace tubes, the integration level is high, and the suspension device can be widely used for suspending furnace tubes of heating furnaces of petrochemical devices. The placement of lower boom 22 may be determined based on the position of the actual furnace tube.
A positioning plate 6 is fixed at the position of the main hanging bracket 5 connected with a rooting hanging lug 9, the positioning plate 6 is arc-shaped, a plurality of positioning holes 10 are formed in the positioning plate 6, the positioning holes 10 are arc-shaped, and the upper part of the rooting hanging lug 9 is connected with the positioning holes 10 through a positioning shaft 7; the top end of the rooting lifting lug 9 is fixedly connected with a rooting beam 8. During installation, the positioning shaft 7 is inserted into the rooting lifting lug 9 and a proper positioning hole 10, so that the rooting lifting lug 9 is prevented from shaking all the time, and the installation is convenient; after the installation is finished, the positioning shaft 7 is pulled out, so that the rooting lifting lug 9 can freely rotate in cooperation with the main shaft 11.
A graphite-based self-lubricating shaft sleeve 16 is arranged between the main hanging bracket 5 and the main shaft 11, so that dry self-lubrication is realized.
The distance between the main shaft 11 and the counterweight pin shaft 4 is larger than the distance between the main shaft 11 and the hanger rod pin shaft 12, so that the counterweight 1 and the counterweight 2 with the same weight can balance a furnace tube with larger weight.
In the use process, the lifting rod lifting lug 14 at the bottom end of the lower lifting rod 22 is connected with the furnace tube lifting lug 15; the balancing weight 1 is a basic balancing weight, the balancing weight 2 has various different thicknesses, the balancing weight 2 with various thicknesses is selected according to the specific bearing capacity of the spring box 26, the balancing weight 1 and the balancing weight 2 at one end of the balancing weight rod 3 can reach balance with one end of the adjustable hanging rod 13, the precision of the constant degree is higher, the spring box 26 is connected with a plurality of lower hanging rods 22, the density of a furnace tube in unit area of the heating furnace can be greatly improved, the additional stress of the existing constant force spring 20 hanging frame caused to the furnace tube due to low constant degree is solved, the balance between the load and the balancing weight by more than 99% is realized, the flexible hanging of the furnace tube is realized through the arrangement of the spring box 26, and the cracking and deformation of the welding seam of the furnace tube are avoided.
Claims (4)
1. A balanced constant force furnace tube hanger is characterized in that: the device comprises a main hanging bracket (5), wherein two ends of the main hanging bracket (5) are respectively connected with one end of a counterweight rod (3) and one end of an adjustable hanging rod (13) through a counterweight pin shaft (4) and a hanging rod pin shaft (12), and the main hanging bracket (5) is connected with a rooting hanging lug (9) through a main shaft (11); a counter weight (1) and a counter weight (2) are arranged on the counter weight rod (3); the other end of the adjustable suspender (13) is connected with a spring box (26), the spring box (26) is connected with a plurality of lower suspenders (22), the upper part of the lower suspender (22) is connected with the spring box (26), and the bottom end of the lower suspender (22) is provided with a suspender lifting lug (14);
the spring box (26) comprises a box body (17), a plurality of pairs of corresponding through holes are formed in a box body top plate (25) and a bottom plate (19), a lower hanging rod (22) penetrates through the box body top plate (25) and the bottom plate (19) from the through holes, a spring (20) is sleeved on the periphery of the lower hanging rod (22) in the box body (17), a gland (23) penetrates through the upper part of the lower hanging rod (22) in the box body (17), a first nut (24) is arranged on the top surface of the gland (23) in the box body (17), the first nut (24) is in threaded connection with the lower hanging rod (22), and two ends of the spring (20) are respectively abutted with the box body bottom plate (19) and the gland (23); the adjustable suspender (13) is connected with the box top plate (25);
a guide sleeve (18) is additionally arranged on the periphery of a lower boom (22) below a gland (23), the gland (23) is in a step shape, the top of the guide sleeve (18) is in threaded connection with the small diameter end of the gland (23), the lower part of the guide sleeve (18) penetrates out of a box bottom plate (19), and a spring (20) is sleeved on the periphery of the guide sleeve (18);
a positioning plate (6) is fixed at the position of the main hanging bracket (5) connected with a rooting lifting lug (9), the positioning plate (6) is in an arc shape, a plurality of positioning holes (10) are formed in the positioning plate (6), the plurality of positioning holes (10) are in arc arrangement, and the upper part of the rooting lifting lug (9) is connected with the positioning holes (10) through a positioning shaft (7); the top end of the rooting lifting lug (9) is fixedly connected with a rooting beam (8);
the top end of a lower suspender (22) at the upper part of the spring box (26) is provided with a second nut (21).
2. The balanced constant force furnace tube hanger of claim 1, wherein: the main hanging bracket (5) is an A-shaped bracket, the counterweight rod (3) is connected with the tip end of the A-shaped bracket, the adjustable hanging rod (13) is connected with the opening end of the A-shaped bracket, and the two brackets at the opening end of the A-shaped bracket are respectively connected with the spring box (26) through the adjustable hanging rod (13).
3. The balanced constant force furnace tube hanger of claim 1, wherein: a graphite-based self-lubricating shaft sleeve (16) is arranged between the main hanging bracket (5) and the main shaft (11).
4. The balanced constant force furnace tube hanger of claim 1, wherein: the distance between the main shaft (11) and the counterweight pin shaft (4) is larger than the distance between the main shaft (11) and the boom pin shaft (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111318902.6A CN114251412B (en) | 2021-11-09 | 2021-11-09 | Balance type constant force furnace tube hanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111318902.6A CN114251412B (en) | 2021-11-09 | 2021-11-09 | Balance type constant force furnace tube hanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114251412A CN114251412A (en) | 2022-03-29 |
| CN114251412B true CN114251412B (en) | 2023-12-08 |
Family
ID=80790695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111318902.6A Active CN114251412B (en) | 2021-11-09 | 2021-11-09 | Balance type constant force furnace tube hanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114251412B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003021272A (en) * | 2001-07-06 | 2003-01-24 | Babcock Hitachi Kk | Spring hanger |
| CN205678265U (en) * | 2016-03-29 | 2016-11-09 | 江苏信泰机械有限公司 | A kind of lever balance suspension and support |
| CN206458911U (en) * | 2017-01-06 | 2017-09-01 | 河南大森机电股份有限公司 | A kind of cable channel suspension and support with vibration-damping function |
| CN108167539A (en) * | 2018-01-31 | 2018-06-15 | 北京石油化工工程有限公司 | Constant hanger device |
| JP3227483U (en) * | 2020-05-29 | 2020-08-27 | 日本建設工業株式会社 | Loading equipment |
| CN212657366U (en) * | 2020-04-30 | 2021-03-05 | 广西壮族自治区特种设备检验研究院 | Lever type adjustable load supporting and hanging frame |
| CN113586808A (en) * | 2020-04-30 | 2021-11-02 | 广西壮族自治区特种设备检验研究院 | Lever type adjustable load supporting and hanging frame |
-
2021
- 2021-11-09 CN CN202111318902.6A patent/CN114251412B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003021272A (en) * | 2001-07-06 | 2003-01-24 | Babcock Hitachi Kk | Spring hanger |
| CN205678265U (en) * | 2016-03-29 | 2016-11-09 | 江苏信泰机械有限公司 | A kind of lever balance suspension and support |
| CN206458911U (en) * | 2017-01-06 | 2017-09-01 | 河南大森机电股份有限公司 | A kind of cable channel suspension and support with vibration-damping function |
| CN108167539A (en) * | 2018-01-31 | 2018-06-15 | 北京石油化工工程有限公司 | Constant hanger device |
| CN212657366U (en) * | 2020-04-30 | 2021-03-05 | 广西壮族自治区特种设备检验研究院 | Lever type adjustable load supporting and hanging frame |
| CN113586808A (en) * | 2020-04-30 | 2021-11-02 | 广西壮族自治区特种设备检验研究院 | Lever type adjustable load supporting and hanging frame |
| JP3227483U (en) * | 2020-05-29 | 2020-08-27 | 日本建設工業株式会社 | Loading equipment |
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| Publication number | Publication date |
|---|---|
| CN114251412A (en) | 2022-03-29 |
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