A bus sanding door opening protection tool

By installing window-shaped fixtures, side door protective fixtures, and end door protective fixtures on the bus, the problem of poor sealing during the polishing process of the green bus was solved, achieving tight coverage of the door openings and convenient disassembly and assembly, ensuring convenient cleaning and maintenance of the carriage.

CN224464455UActive Publication Date: 2026-07-07NANJING LONGYUE XINGTAI TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING LONGYUE XINGTAI TECH CO LTD
Filing Date
2025-07-03
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

The existing protective equipment for sandblasting door openings on passenger buses is not properly sealed on green-skinned passenger buses, allowing metal grit to enter the carriage through the gaps. Furthermore, it is inconvenient to disassemble and reassemble, affecting cleaning and maintenance work.

Method used

A protective system was designed, comprising a window-shaped fixture, a side door protective fixture, and an end door protective fixture. The system achieves tight installation and disassembly through components such as window opening locking fixtures, load-bearing connecting angle steel, and threaded ring rods, which facilitates sealing and blocking of door openings and prevents metal and gravel from entering the carriage.

Benefits of technology

It achieves a tight seal on window openings, side doors, and end doors, preventing sand and gravel from entering the carriage during the grinding process, facilitating subsequent cleaning and disassembly, and making it convenient for construction and use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of passenger train sanding door hole protection tool, including train compartment, window hole, side door and end door are respectively provided on the train compartment, the window shape tool holder of being fixed on train compartment is installed on the window hole.The utility model, by installing window shape tool holder in window hole, window shape tool holder is fixedly installed by four window hole lock catch tool, two side door are fixedly installed by two side door protection tool, and end door is fixedly filled by end door protection tool, window hole, side door and end door are sealed, when polishing maintenance is carried out to train compartment, prevent that the metal grit used for polishing enters compartment, later cleaning is convenient, and disassembly and assembly are convenient, suitable for construction use, so that device can be sealed by three toolings corresponding to door hole, prevent that the metal grit used for polishing enters compartment, it is convenient to fixed disassembly, and later cleaning is convenient, convenient for construction use.
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Description

Technical Field

[0001] This utility model relates to the technical field of bus maintenance devices, and in particular to a protective tool for sandblasting door openings in buses. Background Technology

[0002] In the field of railway vehicle maintenance, when sanding the old paint on the surface of green passenger cars, it is necessary to use a protective tool for the sanding door openings to seal and protect the door openings to prevent metal shavings generated during sanding from entering the carriage through windows, side doors, and end doors, which would make cleaning difficult. This protective tool effectively seals the doors and windows during operation, significantly reducing the risk of shavings entering the carriage, ensuring the cleanliness of the vehicle's interior, and facilitating subsequent maintenance work.

[0003] When sanding old paint on the vehicle body, it is necessary to seal the windows, side doors, and end doors to prevent metal shavings used for sanding from entering the passenger compartment and becoming difficult to clean. However, existing protective fixtures for sanding door openings on buses have the problem of inadequate sealing in practical applications. Due to the complex structure of the doors and windows of green buses, the existing protective fixtures cannot completely fit the edges of the doors and windows, leaving gaps. As a result, a large amount of metal shavings can still enter the passenger compartment through these gaps during the sanding process. At the same time, the different shapes and sizes of the lathes, side doors, and end doors inside the passenger compartment make it difficult to install and assemble them, and disassembly and assembly are also inconvenient. Both the initial sanding and sealing and the subsequent disassembly and fixing are quite inconvenient. Therefore, we propose a protective fixture for sanding door openings on buses to solve the above problems. Utility Model Content

[0004] In response to the problems raised, this utility model provides a protective tool for sandblasting door openings in passenger vehicles to solve the aforementioned issues.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A protective tool for sanding door openings in passenger vehicles includes a train carriage, on which window openings, side door openings and end door openings are respectively opened;

[0007] A window-shaped fixture frame is installed on the window opening and is fixed to the train carriage. Window-shaped fixture frames are provided with window opening locks on all four inner sides and are fixed to the window opening. Side door protection fixtures are installed on the side door and end door protection fixtures are installed on the end door.

[0008] Preferably, the window-shaped fixture is fitted and inserted into the inner side of the window opening, and a bottom support plate is provided at the bottom of the inner side of the window-shaped fixture. The bottom support plate is fitted and placed at the bottom of the window opening, and the window-shaped fixture is supported and fixed to the inner side of the window opening by the bottom support plate.

[0009] Preferably, the window opening locking fixture is evenly installed on the inner side of the window-shaped fixture frame. The window opening locking fixture includes a locking support base, a locking control wrench, and a locking fixing buckle. The four locking support bases are respectively installed on the four sides of the inner support of the window-shaped fixture frame. The locking control wrench is hinged to the top of the locking support base and the locking fixing buckle. The locking fixing buckle is pressed and fixed at the edge of the window opening. The locking fixing buckle is pressed and fastened to the window opening by the locking control wrench.

[0010] Preferably, a flexible baffle is provided on the side door, the side door protection fixture is installed on the inner side of the flexible baffle, a load-bearing connecting angle steel is provided in the middle of the side door protection fixture, two corresponding side door protection fixtures are abutted against the inside of the two side door openings, and a pressing rod is provided between the two side door protection fixtures, the pressing rod is abutted and fixed between the two load-bearing connecting angle steels.

[0011] Preferably, the end door protective fixture is sealed and inserted into the inner side of the end door opening. A bearing crossbar is correspondingly provided in the middle of the end door protective fixture. A threaded ring rod is threaded through the middle of the bearing crossbar. A winding rope is correspondingly provided on the threaded ring rod. A window squeezing rod is provided at the other end of the winding rope.

[0012] Preferably, the bottom of the side of the end door protective fixture is provided with two support rods, which are fixed to the bottom of the inside of the side door. An L-shaped soft rubber pad is provided at the outer edge of the end door protective fixture, and the end door protective fixture is sealed and installed on the end door by the L-shaped soft rubber pad.

[0013] Preferably, the window-shaped fixture, the side door protective fixture, and the end door protective fixture are tightly fitted onto the train carriage.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. This passenger car sandblasting door opening protection fixture consists of window-shaped fixture frames installed at the corresponding window openings. These frames are secured with four window opening locking fixtures, ensuring a tight fit and easy disassembly. Two side door openings are fixedly installed with corresponding side door protection fixtures, and the end door opening is fixedly filled with end door protection fixtures. These three fixtures seal and fill the window openings, side door openings, and end door openings, respectively. This allows the train carriage to be sealed and protected during sanding and paint removal maintenance, preventing metal shavings from entering the carriage. It facilitates subsequent cleaning and disassembly, making it suitable for construction use. The device uses three fixtures to seal and protect the door openings, preventing metal shavings from entering the carriage, and is easy to fix, disassemble, and clean, making it convenient for construction use. Attached Figure Description

[0016] Figure 1This utility model provides a frontal perspective three-dimensional schematic diagram of a protective tool for sandblasting door openings in passenger vehicles;

[0017] Figure 2 This is a rear three-dimensional schematic diagram of the connection structure between the window-shaped fixture frame and the window opening locking fixture of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of structure A;

[0019] Figure 4 This is a top perspective view of the connection structure between the load-bearing connecting angle steel and the extrusion roller of this utility model;

[0020] Figure 5 This is a frontal perspective three-dimensional schematic diagram of the end gate protective fixture and the threaded circular ring rod connection structure of this utility model;

[0021] Figure 6 This is a side perspective three-dimensional schematic diagram of the connection structure between the load-bearing crossbar and the threaded ring rod of this utility model.

[0022] In the diagram: 1. Train carriage; 2. Window opening; 3. Side doorway; 31. Flexible baffle; 4. End doorway; 5. Window-shaped fixture; 51. Bottom support plate; 6. Window opening locking fixture; 61. Locking support seat; 62. Locking control wrench; 63. Locking fixing buckle; 7. Side door protection fixture; 71. Bearing connecting angle steel; 72. Extrusion rod; 8. End door protection fixture; 81. Bearing crossbar; 82. Threaded ring rod; 83. Wrapped rope; 84. Window extrusion rod; 85. Support rod; 86. L-shaped soft rubber pad. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Please see Figures 1-6 A protective tool for sanding door openings in passenger cars includes a train carriage 1, on which window openings 2, side door openings 3 and end door openings 4 are respectively opened;

[0026] A window-shaped fixture 5 is installed on the window opening 2 and is fixed to the train carriage 1. The window-shaped fixture 5 has window opening lock fixtures 6 on all four sides of the inner side of the window opening 2. A side door protection fixture 7 is installed on the side door 3 and an end door protection fixture 8 is installed on the end door 4.

[0027] The beneficial effects of this solution are as follows: The window-shaped fixture 5 is secured to the window opening 2 by four window-hole locking fixtures 6, ensuring a tight fit and easy disassembly. The two side door openings 3 are fixedly installed by two corresponding side door protective fixtures 7, and the end door opening 4 is fixedly filled by an end door protective fixture 8. These three fixtures respectively seal and fill the window opening 2, side door openings 3, and end door opening 4. This allows the train carriage 1 to be sealed and protected during maintenance such as grinding and paint removal, preventing metal shavings from entering the carriage. This facilitates subsequent cleaning and disassembly, making it suitable for construction use. The device can be sealed and protected by three fixtures corresponding to the door openings, preventing metal shavings from entering the carriage, facilitating fixing and disassembly, and making subsequent cleaning convenient and easy for construction use.

[0028] Furthermore, the window-shaped fixture 5 is fitted and inserted into the inner side of the window opening 2. The bottom of the inner side of the window-shaped fixture 5 is provided with a bottom support plate 51. The bottom support plate 51 is fitted and placed at the bottom of the window opening 2. The window-shaped fixture 5 is supported and fixed to the inner side of the window opening 2 by the bottom support plate 51.

[0029] Specifically, the bottom of the inner side of the window-shaped fixture 5 is provided with a bottom support plate 51, which makes it easy for the window-shaped fixture 5 to be installed and hung in the window opening 2, and easy to insert and fix.

[0030] Furthermore, the window opening locking fixture 6 is evenly installed on the inner side of the window-shaped fixture frame 5. The window opening locking fixture 6 includes a locking support seat 61, a locking control wrench 62, and a locking fixing buckle 63. The four locking support seats 61 are respectively installed on the four sides of the inner side bracket of the window-shaped fixture frame 5. The locking control wrench 62 is hinged to the top of the locking support seat 61 and the locking fixing buckle 63. The locking fixing buckle 63 is pressed and fixed at the edge of the window opening 2. The locking fixing buckle 63 is pressed and fastened to the window opening 2 by the locking control wrench 62.

[0031] Specifically, the back of the window-shaped fixture 5 is equipped with window opening locking fixtures 6 on the top, bottom, left, and right sides. Each window opening locking fixture 6 includes a locking support base 61, a locking control wrench 62, and a locking fixing buckle 63. The locking support base 61 provides hinge support for the locking control wrench 62 and the locking fixing buckle 63. Pressing the locking control wrench 62 controls the locking fixing buckle 63 to press against the window opening 2, which facilitates the installation and fixing of the locking fixing buckle 63. The locking and fixing effect is good. The four window opening locking fixtures 6 can lock and fix in four directions, so that the window-shaped fixture 5 can be fastened to the window opening 2 by the window opening locking fixtures 6. The sealing and covering effect is good, and the disassembly and assembly are convenient in the later stage.

[0032] Furthermore, a flexible baffle 31 is provided on the side door 3, and the side door protection fixture 7 is installed on the inner side of the flexible baffle 31. A load-bearing connecting angle steel 71 is provided in the middle of the side door protection fixture 7. The two corresponding side door protection fixtures 7 are abutted against the inside of the two side door 3. A pressing rod 72 is provided between the two side door protection fixtures 7. The pressing rod 72 is abutted against and fixed between the two load-bearing connecting angle steels 71.

[0033] Specifically, a flexible baffle 31 is provided on the side door 3. After the side door protection fixture 7 is installed and fixed, it has a good sealing and protection effect, preventing the entry of external metal waste. The middle of the side door protection fixture 7 is provided with a load-bearing connecting angle steel 71. The two side door protection fixtures 7 are installed by compression. The compression roller 72 is pressed against the two load-bearing connecting angle steels 71, generating compression stress on the two side door protection fixtures 7, so that the two side door protection fixtures 7 are inserted and sealed in the two side door 3 to complete the sealing and fixing installation. Disassembly can be completed by simply removing the compression roller 72. The initial sealing is stable and the subsequent disassembly and assembly are convenient and easy to use.

[0034] Furthermore, the end door protection fixture 8 is sealed and inserted into the inner side of the end door 4. The middle part of the end door protection fixture 8 is provided with a bearing crossbar 81. The middle part of the bearing crossbar 81 is threaded through a threaded ring rod 82. The threaded ring rod 82 is provided with a winding rope 83. The other end of the winding rope 83 is provided with a window squeezing rod 84.

[0035] Specifically, the end door protection fixture 8 is provided with a load-bearing crossbar 81 in the middle, which can bolt a threaded ring rod 82. The ring of the threaded ring rod 82 is installed on the outside of the end door protection fixture 8. The end door protection fixture 8 is filled and fixed to the inside of the end door 4. When a tight installation is required, the ring of the threaded ring rod 82 can be used to suspend and connect a rope 83. The other end of the rope 83 is provided with a window compression rod 84, which makes it easy for the window compression rod 84 to be pressed and fixed on the train car 1, and easy to stretch and fix the end door protection fixture 8. The installation is tight and the sealing is good. Metal is not easy to enter the interior of the car during grinding, and the disassembly and assembly are convenient in the later stage.

[0036] Furthermore, two support rods 85 are provided at the bottom of the side of the end door protective fixture 8. The two support rods 85 support and fix the bottom of the inner side of the side door 3. An L-shaped soft rubber pad 86 is provided at the outer edge of the end door protective fixture 8. The end door protective fixture 8 is sealed and installed on the end door 4 by the L-shaped soft rubber pad 86.

[0037] Specifically, the top of the end gate protective fixture 8 is equipped with a support rod 85, which can stably support and fix it on the end gate 4. The L-shaped soft rubber pad 86 plays a role in sealing and preventing leakage during installation, and the sealing installation effect is good.

[0038] Furthermore, the window-shaped fixture 5, the side door protective fixture 7, and the end door protective fixture 8 are tightly fitted onto the train carriage 1;

[0039] Specifically, the window-shaped fixture 5, the side door protective fixture 7, and the end door protective fixture 8 are tightly fitted onto the train car 1. The three sets of fixtures can be installed and sealed onto the window opening 2, the side door opening 3, and the end door opening 4, respectively, so that the entire train car 1 can be sealed. They have excellent adaptability and good installation tightness.

[0040] How to use and how to work this device:

[0041] By providing window openings 2, side doors 3, and end doors 4 on the train carriage 1, and installing window-shaped fixtures 5 on the window openings 2, the window-shaped fixtures 5 are secured to the window openings 2 by four window opening locking fixtures 6, ensuring tight installation and easy disassembly. The two side doors 3 are fixedly installed by two side door protective fixtures 7, and the end doors 4 are fixedly filled by end door protective fixtures 8. The three fixtures respectively seal and fill the window openings 2, side doors 3, and end doors 4, so that when the train carriage 1 is subjected to maintenance such as grinding and paint removal, the three fixtures can seal and shield it, preventing metal shavings used for grinding from entering the carriage, and facilitating subsequent cleaning.

[0042] The bottom of the inner side of the window-shaped fixture 5 is provided with a bottom support plate 51, which facilitates the installation and hanging of the window-shaped fixture 5 in the window opening 2. The insertion and fixing are convenient. The back of the window-shaped fixture 5 is provided with window opening locking fixtures 6 on the top, bottom, left and right sides. The window opening locking fixtures 6 include a locking support base 61, a locking control wrench 62 and a locking fixing buckle 63. The locking support base 61 provides hinge support for the locking control wrench 62 and the locking fixing buckle 63. Pressing the locking control wrench 62 can control the locking fixing buckle 63 to squeeze the window opening 2, which facilitates the installation and fixing of the locking fixing buckle 63. The locking and fixing effect is good. The four window opening locking fixtures 6 can lock and fix in four directions, so that the window-shaped fixture 5 can be fastened and fixed to the window opening 2 by the window opening locking fixtures 6. The sealing and covering effect is good, and the disassembly and assembly are convenient in the later stage.

[0043] A flexible baffle 31 is provided on the side door 3. After the side door protection fixture 7 is installed and fixed, it plays a good sealing and protection role, preventing the entry of external metal waste. The middle of the side door protection fixture 7 is provided with a load-bearing connecting angle steel 71. The two side door protection fixtures 7 are installed by compression. The compression roller 72 is pressed against the two load-bearing connecting angle steels 71, generating compression stress on the two side door protection fixtures 7, so that the two side door protection fixtures 7 are inserted and sealed in the two side door 3 to complete the sealing and fixing installation. Disassembly can be completed by simply removing the compression roller 72. The initial sealing is stable and the subsequent disassembly and assembly are convenient and easy to use.

[0044] The end door protection fixture 8 is provided with a load-bearing crossbar 81 in the middle, which can bolt the threaded ring rod 82. The ring of the threaded ring rod 82 is installed on the outside of the end door protection fixture 8. The end door protection fixture 8 is filled and fixed to the inside of the end door 4. The top of the end door protection fixture 8 is provided with a support rod 85, which can stably support and fix it on the end door 4. The L-shaped soft rubber pad 86 plays a role in sealing and preventing leakage during installation. When it is necessary to tighten the installation, the ring of the threaded ring rod 82 can be used to hang the winding rope 83. The other end of the winding rope 83 is provided with a window squeezing rod 84, which makes it easy for the window squeezing rod 84 to squeeze and fix it on the train car 1. It is also easy to stretch and fix the end door protection fixture 8. The installation is tight and the sealing is good. Metal is not easy to enter the interior of the car during grinding. It is convenient for disassembly and assembly in the later stage.

[0045] The device can be sealed and blocked by three tooling fixtures to prevent metal shavings used for grinding from entering the carriage. It is easy to fix and disassemble, and easy to clean later, making it convenient for construction and use.

[0046] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A passenger car sanding door opening protection tooling comprising a railway car (1) characterized by: The train carriage (1) is provided with window openings (2), side door openings (3) and end door openings (4); A window-shaped fixture (5) is installed on the window opening (2) and fixed to the train carriage (1). The window-shaped fixture (5) has window opening lock fixtures (6) that are fixed to the window opening (2) on all four sides of the inner side. A side door protection fixture (7) is installed on the side door (3), and an end door protection fixture (8) is installed on the end door (4).

2. A transit sanding door opening protection tool as defined in claim 1, wherein: The window-shaped fixture (5) is fitted and inserted into the inner side of the window opening (2). The bottom of the inner side of the window-shaped fixture (5) is provided with a bottom support plate (51). The bottom support plate (51) is fitted and placed at the bottom of the window opening (2). The window-shaped fixture (5) is supported and fixed to the inner side of the window opening (2) by the bottom support plate (51).

3. The protective fixture for sandblasting door openings in passenger vehicles according to claim 1, characterized in that: The window opening locking fixture (6) is evenly installed on the inner side of the window-shaped fixture frame (5). The window opening locking fixture (6) includes a locking support seat (61), a locking control wrench (62), and a locking fixing buckle (63). The four locking support seats (61) are respectively installed on the four sides of the inner support of the window-shaped fixture frame (5). The locking control wrench (62) is hinged to the top of the locking support seat (61) and the locking fixing buckle (63). The locking fixing buckle (63) is pressed and fixed at the edge of the window opening (2). The locking fixing buckle (63) is pressed and fastened to the window opening (2) by the locking control wrench (62).

4. The protective fixture for sandblasting door openings in passenger vehicles according to claim 1, characterized in that: A flexible baffle (31) is provided on the side door (3). The side door protection fixture (7) is installed on the inner side of the flexible baffle (31). A load-bearing connecting angle steel (71) is provided in the middle of the side door protection fixture (7). The two corresponding side door protection fixtures (7) abut against the two side door doors (3). A pressing rod (72) is provided between the two side door protection fixtures (7). The pressing rod (72) abuts against and is fixed between the two load-bearing connecting angle steels (71).

5. The protective fixture for sandblasting door openings in passenger vehicles according to claim 1, characterized in that: The end door protection fixture (8) is sealed and inserted into the inner side of the end door (4). The middle part of the end door protection fixture (8) is provided with a bearing crossbar (81). The middle part of the bearing crossbar (81) is threaded through a threaded ring rod (82). The threaded ring rod (82) is provided with a winding rope (83). The other end of the winding rope (83) is provided with a window squeezing rod (84).

6. The protective fixture for sandblasting door openings in passenger vehicles according to claim 5, characterized in that: The bottom of the side of the end door protective fixture (8) is provided with two support rods (85). The two support rods (85) are fixed to the bottom of the inside of the side door (3). The outer edge of the end door protective fixture (8) is provided with an L-shaped soft rubber pad (86). The end door protective fixture (8) is sealed and installed on the end door (4) by the L-shaped soft rubber pad (86).

7. The protective fixture for sandblasting door openings in passenger vehicles according to claim 1, characterized in that: The window-shaped fixture (5), the side door protective fixture (7), and the end door protective fixture (8) are tightly fitted onto the train carriage (1).