CN104934088A - Anti-radiation cab - Google Patents
Anti-radiation cab Download PDFInfo
- Publication number
- CN104934088A CN104934088A CN201510336657.XA CN201510336657A CN104934088A CN 104934088 A CN104934088 A CN 104934088A CN 201510336657 A CN201510336657 A CN 201510336657A CN 104934088 A CN104934088 A CN 104934088A
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- Prior art keywords
- plumbous box
- box
- plumbous
- lead
- lead box
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F3/00—Shielding characterised by its physical form, e.g. granules, or shape of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F1/00—Shielding characterised by the composition of the materials
- G21F1/02—Selection of uniform shielding materials
- G21F1/08—Metals; Alloys; Cermets, i.e. sintered mixtures of ceramics and metals
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F7/00—Shielded cells or rooms
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Metallurgy (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses an anti-radiation cab which comprises a lead-poured outer cab body. The lead-poured outer cab body is composed of a front lead box, a top lead box, a rear lead box, a left lead box, a bottom lead box, a right lead box and a main framework. The front lead box, the top lead box, the rear lead box, the left lead box, the bottom lead box and the right lead box are each formed by welding a cover plate to angle iron. The front lead box, the top lead box, the rear lead box, the left lead box, the right lead box and the bottom lead box are welded to the front face, the upper face, the rear face, the left side face, the right side face and the bottom face of the main framework respectively. Pouring openings are formed in the front lead box, the top lead box, the rear lead box, the left lead box, the bottom lead box and the right lead box. Box iron is welded to the joint of every two adjacent lead boxes and filled with lead. A shielding door is arranged on a door frame of the left lead box. The anti-radiation cab has the advantages that the problem that existing engineering equipment can not carry out construction work due to the poor shielding effect in the nuclear facility decommissioning and nuclear leakage accident emergency processing process is solved, the safe work of the engineering device under the high radiation environment is achieved, and the physical health and life safety of workers are guaranteed.
Description
Technical field
The invention belongs to Nuclear installation decommissioning project machinery production technical field, relate to a kind of radiation proof driving cabin.
Background technology
In the process of nuclear industry development, a large amount of nuclear facilities and uranium mine will enter the date of retirement successively.Retired nuclear facilities process disposal and nuclear leakage emergency management safety work technology comprise the content such as cleaning, cutting, excavation, loading, transport, landfill of nuclear facilities and nuclear activity material.Under existing technical conditions, on the one hand, because above-mentioned operation is by manually completing, the healthy of operating personnel and life security is caused to be subject to the direct threat of nuclear radiation; On the other hand, because manual operation efficiency is low, when nuclear leakage emergency management, very easily causes radioactivity to spread, cause large area public safety accident.Therefore, accelerate research and development and be applicable to safe handling disposal technology under retired nuclear facilities, nuclear leakage and radioactive environment and equipment, realize the safe construction of retired nuclear facilities and the safe handling of nuclear leakage, become the key subjects that public safety field is urgently to be resolved hurrily.
Summary of the invention
The object of this invention is to provide a kind of radiation proof driving cabin, reduce the harm of nuclear radiation to human body, the life security of guarantee driver with very big limit.
The technical solution adopted in the present invention is, a kind of radiation proof driving cabin, comprise and fill with plumbous outer cabin, fill with plumbous outer cabin to be made up of front plumbous box, the plumbous box in top, rear plumbous box, left plumbous box, the end plumbous box, right plumbous box and main framing, front plumbous box, the plumbous box in top, rear plumbous box, left plumbous box, the plumbous box in the end, right plumbous box are welded by cover plate and angle steel; Front plumbous box, the plumbous box in top, rear plumbous box, left plumbous box, right plumbous box, the plumbous box in the end are welded on before main framing respectively, above, below, left surface, right flank and bottom surface, form an airtight driving cabin, front plumbous box, the plumbous box in top, rear plumbous box, left plumbous box, the plumbous box in the end, right plumbous box have sprue gate, adjacent two plumbous box joint welding channel-section steels, channel-section steel inside fills with plumbous, and shield door is arranged on the doorframe of left plumbous box.
The invention has the beneficial effects as follows, solve existing engineer equipment in the elimination of nuclear facilities and the nuclear leakage emergency management process difficult problem that construction operation cannot carry out because of shield effectiveness difference, achieve the engineer equipment safety work under high radioactivity environment, ensure the healthy of operating personnel and life security.
Accompanying drawing explanation
Fig. 1 is radiation proof driving cabin overall pattern.
Fig. 2 is radiation proof driving cabin A-A cut-open view.
Fig. 3 is plumbous box front view before radiation proof driving cabin.
Fig. 4 is plumbous box B-B cut-open view before radiation proof driving cabin.
Fig. 5 is the plumbous box front view in radiation proof driving cabin top.
Fig. 6 is radiation proof driving cabin top plumbous box C-C cut-open view.
Fig. 7 is plumbous box front view after radiation proof driving cabin.
Fig. 8 is plumbous box D-D cut-open view after radiation proof driving cabin.
Fig. 9 is the left plumbous box front view of radiation proof driving cabin.
Figure 10 is the left plumbous box E-E cut-open view of radiation proof driving cabin.
Figure 11 is plumbous box front view at the bottom of radiation proof driving cabin.
Figure 12 is plumbous box F-F cut-open view at the bottom of radiation proof driving cabin.
Figure 13 is the right plumbous box front view of radiation proof driving cabin.
The right plumbous box H-H cut-open view of Figure 14 radiation proof driving cabin.
Figure 15 is main framing axial view.
In figure, 1. plumbous box before, 101. first angle steel, 102. first gussets, plumbous box front shroud before 103., 104. web joint, 105. transparent part for front sights shield plumbous box, 106. lead glass, 107. first leads, 108. antidetonation rubber, 109. lead glass installing frames, 110. spring bumper, plumbous box back shroud before 111., 2. push up plumbous box, 201. air strainer, 202. second angle steel, 203. second gussets, the 204. plumbous box top boards in top, 205. installing plate, 206. closed cylinder, 207. bend pipe, 208. strengthen angle steel, 209. second leads, the 210. plumbous box plates in top, 3. plumbous box after, 301. triangular steels, 302. the 4th angle steel, plumbous box outer panel after 303., plumbous box interior plate after 304., 305. the 3rd leads, 4. left plumbous box, 401. the 5th angle steel, 402. left plumbous box outer panels, 403. hexagonal steels, 404. channel-section steel, 405. doorframe, 406. left plumbous box interior plates, 407. the 4th leads, 408. the 4th gussets, 5. the plumbous box in the end, 501. bolt sleeve, 502. first back up pads, 503. silicon oil shock absorber, 504. operating system installation passages, 505. hydraulic systems install passage, 506. air-conditioning systems install passage, 507. the 5th leads, 508. strip of paper used for sealing, 509. second back up pads, 6. shield door, 7. right plumbous box, 701. heptangle steel, 702. octagonal steels, 703. right plumbous box outer panels, 704. right plumbous box interior plates, 705. the 5th gussets, 706. stereotype, 8. apparatus of oxygen supply, 9. display screen, 10. main framing, 11. radiation dose alarms, 12. first cameras, 13. second cameras.
Embodiment
A kind of radiation proof driving cabin, structure as shown in Figure 1, 2, comprise and fill with plumbous outer cabin, fill with plumbous outer cabin by front plumbous box 1, push up plumbous box 2, rear plumbous box 3, left plumbous box 4, the end plumbous box 5, right plumbous box 7 and main framing 10 form, front plumbous box 1, push up plumbous box 2, rear plumbous box 3, left plumbous box 4, end lead box 5, right plumbous box 7 be welded by cover plate and angle steel; Front plumbous box 1, push up plumbous box 2, rear plumbous box 3, left plumbous box 4, the plumbous box 5 in the end, right plumbous box 7 are welded on before main framing 10 respectively, above, below, left surface, bottom surface and right flank, totally surround an airtight driving cabin, front plumbous box 1, push up plumbous box 2, rear plumbous box 3, left plumbous box 4, the plumbous box 5 in the end, right plumbous box 7 have sprue gate, postwelding is carried out overall lead of filling with and is poured into a mould, and at adjacent two plumbous box joint welding channel-section steels, channel-section steel inside fills with plumbous, improve driving cabin to nuclear radiation shield performance.
Strengthen the structural strength of driving cabin and rigidity, the cover plate of each plumbous box is all welded with and strengthens angle steel and gusset, and set the height of plumbous box according to the thickness of each lead, improve the damage resistance of driving cabin in engineer machinery operation process and reach radiation-resistant object.
Shield door 6 is arranged on the doorframe 405 of left plumbous box 4
Plumbous box 1 and left plumbous box 4 junction before the apparatus of oxygen supply 8 of life support system is arranged on driving cabin.Can suitably improve cabin internal gas pressure, prevent radiating gas out of my cabin from entering in cabin, ensure human pilot life security.
Push up before and after plumbous box 2 top and be provided with the first camera 12, second camera 13, cockpit front is provided with display screen 9, for showing driving cabin external circumstances in real time.
Cockpit is provided with radiation dose alarm 11, in real time dosage level in monitoring cabin, and push up plumbous box 2 top and be provided with air strainer 201, extraneous air is filtered by air strainer 201 and delivers in driving cabin again.Radiation dose alarm 11 is installed below air strainer 201.
As shown in Figure 3,4, front plumbous box 1 mainly shields plumbous box 105 by the first angle steel 101, first gusset 102, front plumbous box front shroud 103, web joint 104, transparent part for front sight, lead glass 106, first lead 107, antidetonation rubber 108, lead glass installing frame 109, spring bumper 110, front plumbous box back shroud 111 form.
First angle steel 101 forms front plumbous box main body with front plumbous box front shroud 103 with front plumbous box back shroud 111, front plumbous box front shroud 103 and the surrounding of front plumbous box back shroud 111 are burn-on the first angle steel 101, upper first lead 107 of inner filling, to burn-on in front plumbous box back shroud 111 plate face the first gusset 102, to improve cover plate rigidity, lead glass installing frame 109 is embedded in the middle of front plumbous box 1, lead glass 106 is embedded in lead glass installing frame 109, lead glass 106 and lead glass installing frame 109 contact portion fill antidetonation rubber 108, mounting spring vibroshock 110 below lead glass installing frame 109, to improve shock resistance further, transparent part for front sight shields plumbous box 105 and is buckled by lead glass installing frame 109 from outside to inside, upper first lead 107 of inner filling, to prevent radiant rays from the gap location between lead glass installing frame 109 and front plumbous lid plate 103 through going, transparent part for front sight shields plumbous box 105 surrounding web joint 104 and fixes.
As shown in Figure 5,6, push up plumbous box 2 by air strainer 201, second angle steel 202, second gusset 203, push up plumbous box top board 204, installing plate 205, closed cylinder 206, bend pipe 207, strengthen angle steel 208, second lead 209 and form.
Similar with front plumbous box 1, push up plumbous box top board 204 to form with the plumbous box plate 210 in top and push up plumbous box 2 main body, push up plumbous box plate 210 bottom in plumbous box top board 204 top and top and be welded with reinforcement angle steel 208 and the second gusset 203 respectively, to improve rigidity, push up plumbous box 2 surrounding the second angle steel 202 to weld, push up plumbous box top board 204 upper weld and have installing plate 205, air strainer 201 is arranged on installing plate 205, and be connected with bend pipe 207, its objective is that the air after by filtration is transported to cockpit, radiation leakage gap is there is for preventing bend pipe 207 and pushing up between plumbous box 2, closed cylinder 206 is arranged on bend pipe 207 and plumbous box top board 204 junction, top, push up plumbous box top board 204 inside and pour into the second lead 209, push up plumbous box 2 inside simultaneously and also pour into the second lead 209, with shielded nucleus radiation.
As Fig. 7,8, shown in, rear plumbous box 3 is made up of triangular steel 301, the 4th angle steel 302, rear plumbous box outer panel 303, rear plumbous box interior plate 304, the 3rd lead 305; Rear plumbous box outer panel 303 forms rear plumbous box 3 main body with rear plumbous box interior plate 304, rear plumbous box outer panel 303 is welded with triangular steel 301 with rear plumbous box interior plate 304 surrounding, the 3rd lead 305 is filled in rear plumbous box 3 inside, the 4th angle steel 302 is welded respectively, to improve the rigidity of rear plumbous box 3 outside rear plumbous box outer panel 303 with inside rear plumbous box interior plate 304.
As shown in Fig. 9,10, left plumbous box 4 is made up of the 5th angle steel 401, left plumbous box outer panel 402, hexagonal steel 403, channel-section steel 404, doorframe 405, left plumbous box interior plate 406, the 4th lead 407, the 4th gusset 408.
Left plumbous box outer panel 402, left plumbous box interior plate 406 and doorframe 405 form the main body of left plumbous box 4, the 5th angle steel 401 is welded with around left plumbous box 4, the 4th lead 407 is poured in the middle of doorframe 405, for improving plumbous box rigidity, be welded with hexagonal steel 403 outside left plumbous box outer panel 402, be welded with the 4th gusset 408 inside left plumbous box interior plate 406, channel-section steel 404 is welded on doorframe 405 surrounding, channel-section steel 404 inside is filled with the 4th lead 407, improves doorframe 405 place shielding property.
As shown in Figure 11,12, plumbous box 5 is made up of bolt sleeve 501, first back up pad 502, silicon oil shock absorber 503, the 5th lead 507, strip of paper used for sealing 508, second back up pad 509 at the end, and the plumbous box 5 in the end is provided with reservation operations system and installs passage 504, hydraulic system installation passage 505, air-conditioning system installation passage 506; Wherein the first back up pad 502, second back up pad 509 forms plumbous box 5 main body in the end, first back up pad 502 surrounding is welded with strip of paper used for sealing 508, plumbous box 5 inside is filled with the 5th lead 507 at the end, and plumbous box 5 surrounding is evenly arranged bolt sleeve 501 at the end, is conveniently arranged on excavator base by plumbous for end box 5; Four silicon oil shock absorbers 503 are evenly arranged on plumbous box 5 four jiaos of places, the end for damping.
As shown in Figure 13,14, right plumbous box 7 is made up of heptangle steel 701, octagonal steel 702, right plumbous box outer panel 703, right plumbous box interior plate 704, the 5th gusset 705, stereotype 706;
Right plumbous box outer panel 703 and interior plate 704 form right plumbous box 7 main part, right plumbous box outer panel 703 and interior plate 704 are welded with heptangle steel 701, right plumbous box 7 inside is filled with stereotype 706, for improving the rigidity of right plumbous box 7, be welded with octagonal steel 702 outside right plumbous box outer panel 703, inside right plumbous box interior plate 704, be welded with the 5th gusset 705.
Design science is reasonable, and the sealing of driving cabin, life support system, intelligent monitor system has ensured the safety work of driver.
Claims (10)
1. a radiation proof driving cabin, it is characterized in that, comprise and fill with plumbous outer cabin, fill with plumbous outer cabin by front plumbous box (1), push up plumbous box (2), rear plumbous box (3), left plumbous box (4), the plumbous box (5) in the end, right plumbous box (7) and main framing (10) and form, front plumbous box (1), push up plumbous box (2), rear plumbous box (3), left plumbous box (4), end lead box (5), right plumbous box (7) be welded by cover plate and angle steel, front plumbous box (1), push up plumbous box (2), rear plumbous box (3), left plumbous box (4), right plumbous box (7), plumbous box (5) is welded on before main framing (10) respectively at the end, above, below, left surface, right flank and bottom surface, form an airtight driving cabin, front plumbous box (1), push up plumbous box (2), rear plumbous box (3), left plumbous box (4), the plumbous box (5) in the end, right plumbous box (7) has sprue gate, adjacent two plumbous box joint welding channel-section steels, channel-section steel inside fills with plumbous, shield door (6) is arranged on the doorframe (405) of left plumbous box (4).
2. a kind of radiation proof driving cabin according to claim 1, is characterized in that, plumbous box (1) and left plumbous box (4) junction before the apparatus of oxygen supply (8) of life support system is arranged on driving cabin.
3. a kind of radiation proof driving cabin according to claim 1, it is characterized in that, be separately installed with the first camera (12), second camera (13) before and after plumbous box (2) top, described top, cockpit front is provided with display screen (9).
4. a kind of radiation proof driving cabin according to claim 1, it is characterized in that, cockpit is provided with radiation dose alarm (11), push up plumbous box (2) top and be provided with air strainer (201), in air strainer (201) below, radiation dose alarm (11) is installed.
5. a kind of radiation proof driving cabin according to claim 1, it is characterized in that, described front plumbous box (1) shields plumbous box (105) by the first angle steel (101), the first gusset (102), front plumbous box front shroud (103), web joint (104), transparent part for front sight, lead glass (106), the first lead (107), antidetonation rubber (108), lead glass installing frame (109), spring bumper (110), front plumbous box back shroud (111) form;
Plumbous box main body before first angle steel (101) and front plumbous box front shroud (103) and front plumbous box back shroud (111) form, the surrounding of front plumbous box front shroud (103) and front plumbous box back shroud (111) is burn-on the first angle steel (101), upper first lead (107) of inner filling, to burn-on in front plumbous box back shroud (111) plate face the first gusset (102), lead glass installing frame (109) is embedded in the middle of front plumbous box (1), lead glass (106) is embedded in lead glass installing frame (109), lead glass (160) and lead glass installing frame (109) contact portion fill antidetonation rubber (108), lead glass installing frame (109) below mounting spring vibroshock (110), transparent part for front sight shields plumbous box (105) and is buckled by lead glass installing frame (109) from outside to inside, upper first lead (107) of inner filling, transparent part for front sight shields plumbous box (105) surrounding web joint (104) and fixes.
6. a kind of radiation proof driving cabin according to claim 1, it is characterized in that, the plumbous box in described top (2) by air strainer (201), the second angle steel (202), the second gusset (203), push up plumbous box top board (204), installing plate (205), closed cylinder (206), bend pipe (207), strengthen angle steel (208), the second lead (209) forms;
Push up plumbous box top board (204) to form push up plumbous box (2) main body with the plumbous box plate in top (210), push up plumbous box top board (204) top and push up plumbous box plate (210) bottom and be welded with reinforcement angle steel (208) and the second gusset (203) respectively, push up plumbous box (2) surrounding the second angle steel (202) welding, push up plumbous box top board (204) upper weld and have installing plate (205), air strainer (201) is arranged on installing plate (205), and be connected with bend pipe (207), closed cylinder (206) is arranged on bend pipe (207) and plumbous box top board (204) junction, top, push up plumbous box top board (204) inside and pour into the second lead (209), push up plumbous box (2) inside simultaneously and also pour into the second lead (209).
7. a kind of radiation proof driving cabin according to claim 1, it is characterized in that, described rear plumbous box (3) is made up of triangular steel (301), the 4th angle steel (302), rear plumbous box outer panel (303), rear plumbous box interior plate (304), the 3rd lead (305); Plumbous box (3) main body after rear plumbous box outer panel (303) and rear plumbous box interior plate (304) are formed, rear plumbous box outer panel (303) and rear plumbous box interior plate (304) surrounding are welded with triangular steel (301), the 3rd lead (305) is filled in rear plumbous box (3) inside, and the 4th angle steel (302) is welded respectively with rear plumbous box interior plate (304) inner side in rear plumbous box outer panel (303) outside.
8. a kind of radiation proof driving cabin according to claim 1, it is characterized in that, described left plumbous box (4) is made up of the 5th angle steel (401), left plumbous box outer panel (402), hexagonal steel (403), channel-section steel (404), doorframe (405), left plumbous box interior plate (406), the 4th lead (407), the 4th gusset (408);
Left plumbous box outer panel (402), left plumbous box interior plate (406) and doorframe (405) form the main body of left plumbous box (4), left plumbous box (4) is welded with the 5th angle steel (401) around, the 4th lead (407) is poured in the middle of doorframe (405), left plumbous box outer panel (402) outside is welded with hexagonal steel (403), left plumbous box interior plate (406) inner side is welded with the 4th gusset (408), channel-section steel (404) is welded on doorframe (405) surrounding, and channel-section steel (404) inside is filled with the 4th lead (407).
9. a kind of radiation proof driving cabin according to claim 1, it is characterized in that, plumbous box (5) is made up of bolt sleeve (501), the first back up pad (502), silicon oil shock absorber (503), the 5th lead (507), strip of paper used for sealing (508), the second back up pad (509) at the described end;
The plumbous box (5) in the end is provided with reservation operations system and installs passage (504), hydraulic system installation passage (505), air-conditioning system installation passage (506); Wherein the first back up pad (502), the second back up pad (509) form plumbous box (5) main body in the end, first back up pad (502) surrounding is welded with strip of paper used for sealing (508), plumbous box (5) inside is filled with the 5th lead (507) at the end, and plumbous box (5) surrounding is evenly arranged bolt sleeve (501) at the end; Four silicon oil shock absorbers (503) are evenly arranged on plumbous box (5) corner place, the end.
10. a kind of radiation proof driving cabin according to claim 1, it is characterized in that, described right plumbous box (7) is made up of heptangle steel (701), octagonal steel (702), right plumbous box outer panel (703), right plumbous box interior plate (704), the 5th gusset (705), stereotype (706);
Right plumbous box outer panel (703) and interior plate (704) form right plumbous box (7) main part, right plumbous box outer panel (703) and interior plate (704) are welded with heptangle steel (701), right plumbous box (7) inside is filled with stereotype (706), right plumbous box outer panel (703) outside is welded with octagonal steel (702), and right plumbous box interior plate (704) inner side is welded with the 5th gusset (705).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510336657.XA CN104934088A (en) | 2015-06-16 | 2015-06-16 | Anti-radiation cab |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510336657.XA CN104934088A (en) | 2015-06-16 | 2015-06-16 | Anti-radiation cab |
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| CN104934088A true CN104934088A (en) | 2015-09-23 |
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| CN201510336657.XA Pending CN104934088A (en) | 2015-06-16 | 2015-06-16 | Anti-radiation cab |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752753A (en) * | 2019-03-14 | 2019-05-14 | 山东海强环保科技有限公司 | A kind of combined shielding equipment |
| CN110714504A (en) * | 2019-10-08 | 2020-01-21 | 天津瀚侨车体制造有限公司 | Radiation-proof cab shielding device for excavator |
| CN110820838A (en) * | 2019-09-25 | 2020-02-21 | 天津瀚侨车体制造有限公司 | Shield door of radiation-proof cockpit of excavator |
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| CN109752753A (en) * | 2019-03-14 | 2019-05-14 | 山东海强环保科技有限公司 | A kind of combined shielding equipment |
| CN110820838A (en) * | 2019-09-25 | 2020-02-21 | 天津瀚侨车体制造有限公司 | Shield door of radiation-proof cockpit of excavator |
| CN110714504A (en) * | 2019-10-08 | 2020-01-21 | 天津瀚侨车体制造有限公司 | Radiation-proof cab shielding device for excavator |
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