Fixed door threshold assembly

Abstract

The utility model belongs to the technical field of rail traffic equipment, and particularly relates to a fixed door doorsill assembly which comprises a buried foundation strip and a doorsill part, a mounting groove is formed in the upper side of the buried foundation strip, the doorsill part is placed in the mounting groove, and an elastic pressure buffering mechanism is fixedly connected to the inner bottom wall of the mounting groove. The upper end of the elastic pressure buffering mechanism abuts against the inner top wall of the doorsill piece, mounting mechanisms are arranged in the side walls of the two ends of the buried foundation strip, clamping groove openings are formed in the two sides of the doorsill piece, one ends of the two mounting mechanisms are inserted into the two clamping groove openings correspondingly, and the other ends of the two mounting mechanisms are inserted into the other clamping groove openings correspondingly. The mounting mechanism comprises a cavity formed in the side wall of the buried foundation strip, the inner bottom wall of the cavity is rotationally connected with a rotating rod through a bearing seat, the upper end of the rotating rod penetrates through the upper side of the buried foundation strip, and the rotating rod is fixedly connected with a circular gear.

Description

Technical Field

[0001] The present application belongs to the technical field of rail transit equipment, and specifically relates to a fixed door threshold assembly. Background Art

[0002] With the acceleration of the pace of social life, urban rail transit such as subways is developing rapidly. To ensure the safety of passengers, a screen door system is installed next to the platform near the subway track. The screen door system can separate the waiting platform from the track. Sliding doors are generally used in this screen door system. In order to ensure the safety of passengers and prevent unpredictable emergencies, the design and installation of subway screen doors require that the screen doors be isolated and insulated from the surrounding civil structures and other equipment, and that the screen doors fixed on the platform can withstand various loads and adjust to absorb possible settlement deformation of the civil structure.

[0003] In the Chinese patent platform door threshold assembly and platform door (patent number: CN216517527U), the device includes a first threshold assembly, a second threshold assembly, a support frame and multiple adjustment assemblies, the first threshold assembly and the second threshold assembly are arranged side by side, the first support frame of the support frame is fixed to the bottom surface of the first threshold assembly, and the second support frame is fixed to the bottom surface of the second threshold assembly; the first support frame and the second support frame are both movably connected with the adjustment assembly, and the adjustment assembly of the platform door threshold assembly can adjust the flatness of the first threshold assembly and the second threshold assembly when approaching or moving away from the support frame, avoiding the unevenness problem of the first threshold assembly and the second threshold assembly being convex or concave, and ensuring the structural stability of the platform door threshold assembly. However, in this device, since the threshold assembly is often stepped on and easily damaged, it needs to be disassembled, repaired and replaced regularly, and the disassembly and installation of the threshold assembly in this application is more troublesome, affecting the maintenance efficiency. Utility Model Content

[0004] The purpose of this application is to address the shortcomings of the prior art and to design a fixed door threshold assembly by means of an installation mechanism, so that the threshold member and the buried foundation strip can be easily disassembled, thereby solving the problem that the disassembly and installation of the threshold assembly is troublesome, affecting the maintenance efficiency.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] A fixed door threshold assembly, comprising: an underground foundation strip and a threshold piece, wherein the upper side of the underground foundation strip is provided with an installation groove, the threshold piece is placed in the installation groove, an elastic pressure relief mechanism is fixedly connected to the inner bottom wall of the installation groove, the upper end of the elastic pressure relief mechanism is arranged against the inner top wall of the threshold piece, the side walls at both ends of the underground foundation strip are provided with installation mechanisms, the two sides of the threshold piece are provided with card slots, and one end of the two installation mechanisms is respectively inserted into the two card slots;

[0007] The mounting mechanism includes a cavity opened in the side wall of the buried foundation strip, the inner bottom wall of the cavity is rotatably connected to a rotating rod through a bearing seat, the upper end of the rotating rod passes through the upper side of the buried foundation strip, a circular gear is fixedly connected to the rotating rod, one side of the circular gear is meshingly connected to a rack, the rack is a hollow structure, a positioning rod is fixedly connected to the inner wall of the cavity, one end of the positioning rod passes through the rack and is fixedly connected to a slider, a reset spring is fixedly connected between the slider and the inner wall of the rack, one end of the rack is fixedly connected to a clamping block, and one end of the clamping block is inserted in the clamping slot.

[0008] Preferably, the elastic pressure-relieving mechanism includes three sleeve rods fixed at equal intervals on the bottom wall of the mounting groove, the upper ends of the three sleeve rods are sleeved with sleeves, two sides of the sleeves are hingedly connected to two obliquely symmetrically arranged hydraulic rods, the inner wall of the mounting groove is hingedly connected to the lower end of the hydraulic rod, a pressure-relieving spring is sleeved on the hydraulic rod, the upper ends of the three sleeves are fixedly connected to a support plate, and the upper side of the support plate is arranged to abut against the inner top wall of the threshold member.

[0009] Preferably, the outer side wall of the sleeve rod is slidably connected to the inner wall of the sleeve.

[0010] Preferably, a sliding opening is provided at one end of the rack, and the positioning rod is arranged through the sliding opening.

[0011] Preferably, an avoidance groove is provided on the upper side wall of the buried foundation strip, and the upper end of the rotating rod is located in the avoidance groove and is fixedly connected to a handwheel block.

[0012] Preferably, a through hole communicating with the mounting groove is formed on the side wall of the cavity, and the clamping block is disposed through the through hole.

[0013] Preferably, the front view cross section of the threshold piece is arranged in a concave structure, and the two slots are respectively arranged at two ends of the threshold piece.

[0014] Preferably, two anti-slip strips arranged at equal intervals are fixedly connected to the upper side wall of the threshold.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] 1. The installation mechanism in the present application is arranged so that when the threshold piece needs to be removed from the buried foundation strip, it is only necessary to rotate the rotating rod to drive the circular gear to rotate. Since the circular gear is meshed with the rack, the card block fixed to the rack can be driven to move on the positioning rod. At this time, the reset spring can be squeezed and contracted to generate elastic force until the card block is completely separated from the card slot. At this time, the displacement of the threshold piece is no longer restricted, and the threshold piece can be taken out of the installation slot. After replacing the new threshold piece, the rotating rod is loosened, and the elastic force of the reset spring is used to push the card block to automatically insert into the card slot, thereby limiting the displacement of the threshold piece and realizing fixed installation of the threshold piece. The installation and disassembly are convenient, and subsequent maintenance and replacement are convenient.

[0017] 2. The elastic pressure-relieving mechanism in the present application is arranged such that when a pedestrian steps on the threshold piece, the sleeve is squeezed and moves downward on the sleeve rod. At this time, the hydraulic rod and the pressure-relieving spring swing and generate elastic force due to the squeezing and contraction. The elastic force can be used to buffer the pressure on the threshold piece, prevent the threshold piece from being squeezed and deformed, improve the pressure resistance of the threshold piece, and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of this application;

[0019] Figure 2 This is a schematic diagram of the front cross-sectional structure of the buried foundation strip in this application;

[0020] Figure 3 For this application Figure 2 A schematic diagram of the enlarged structure at point A;

[0021] Figure 4 It is a schematic diagram of the local cross-sectional structure of the buried foundation strip in this application.

[0022] Among them: 1. buried foundation strip; 2. threshold piece; 3. installation groove; 4. slot; 5. cavity; 6. rotating rod; 7. circular gear; 8. rack; 9. positioning rod; 10. slider; 11. reset spring; 12. block; 13. sleeve rod; 14. sleeve; 15. hydraulic rod; 16. pressure relief spring; 17. support plate; 18. avoidance groove; 19. handwheel block; 20. anti-slip strip. DETAILED DESCRIPTION

[0023] See also Figure 1-4A fixed door threshold assembly comprises: an underground foundation strip 1 and a threshold member 2. A pre-buried pit is dug in advance on the ground where the subway track door is installed. The underground foundation strip 1 is placed in the pre-buried pit so that the threshold member 2 is flush with the ground for easy walking. An installation groove 3 is fixed on the upper side of the underground foundation strip 1. The threshold member 2 is placed in the installation groove 3. An elastic pressure relief mechanism is fixedly connected to the inner bottom wall of the installation groove 3. The upper end of the elastic pressure relief mechanism is set against the inner top wall of the threshold member 2. Installation mechanisms are set in the side walls at both ends of the underground foundation strip 1. Card slots 4 are set on both sides of the threshold member 2. One end of the two installation mechanisms is respectively inserted into the two card slots 4.

[0024] The mounting mechanism includes a cavity 5 opened in the side wall of the buried foundation strip 1, and the inner bottom wall of the cavity 5 is rotatably connected to a rotating rod 6 through a bearing seat. The upper end of the rotating rod 6 penetrates the upper side of the buried foundation strip 1, and a circular gear 7 is fixedly connected to the rotating rod 6. One side of the circular gear 7 is meshingly connected to a rack 8. The rack 8 is a hollow structure, and a positioning rod 9 is fixedly connected to the inner wall of the cavity 5. One end of the positioning rod 9 penetrates into the rack 8 and is fixedly connected to a slider 10. A reset spring 11 is fixedly connected between the slider 10 and the inner wall of the rack 8. One end of the rack 8 is fixedly connected to a clamping block 12, and one end of the clamping block 12 is inserted into the clamping slot 4.

[0025] In this embodiment, when it is necessary to remove the threshold member 2 from the buried foundation strip 1, it is only necessary to rotate the rotating rod 6 to drive the circular gear 7 to rotate. Since the circular gear 7 is meshed with the rack 8, the block 12 fixed to the rack 8 can be driven to move on the positioning rod 9. At this time, the reset spring 11 can be squeezed and contracted to generate elastic force until the block 12 is completely separated from the slot 4. At this time, the displacement of the threshold member 2 is no longer restricted, and the threshold member 2 can be taken out of the installation groove 3. After replacing the new threshold member 2, the rotating rod 6 is loosened, and the elastic force of the reset spring 11 is used to push the block 12 to automatically insert into the slot 4, thereby limiting the displacement of the threshold member 2 and achieving fixed installation of the threshold member 2. The installation and disassembly are convenient, and subsequent maintenance and replacement are convenient.

[0026] As a preferred method, Figure 2As shown, the elastic pressure-relief mechanism includes three sleeve rods 13 fixed on the inner bottom wall of the mounting groove 3 at equal intervals, the upper ends of the three sleeve rods 13 are sleeved with sleeves 14, and two sides of the sleeves 14 are hingedly connected to two hydraulic rods 15 arranged obliquely and symmetrically, the inner wall of the mounting groove 3 is hingedly connected to the lower end of the hydraulic rod 15, and the hydraulic rod 15 is sleeved with a pressure-relief spring 16, and the upper ends of the three sleeves 14 are fixedly connected to support plates 17, and the upper side of the support plate 17 is set against the inner top wall of the threshold member 2, but is not fixedly connected. When a pedestrian steps on the threshold member 2, the sleeve 14 is squeezed and moves downward on the sleeve rod 13. At this time, the hydraulic rod 15 and the pressure-relief spring 16 swing and generate elastic force due to squeezing and contraction. The elastic force can be used to buffer the pressure on the threshold member 2 to prevent the threshold member 2 from being squeezed and deformed, thereby improving the pressure resistance and protection of the threshold member 2 and extending its service life.

[0027] As a preferred method, Figure 2 As shown, the outer wall of the sleeve rod 13 is slidably connected to the inner wall of the sleeve 14 to facilitate the displacement of the sleeve 14 on the sleeve rod 13.

[0028] As a preferred method, Figure 4 As shown, a sliding opening is provided at one end of the rack 8, and the positioning rod 9 is arranged through the sliding opening to facilitate the displacement of the rack 8 on the positioning rod 9.

[0029] As a preferred method, Figure 3 As shown, an avoidance groove 18 is provided on the upper side wall of the buried foundation strip 1, and the upper end of the rotating rod 6 is located in the avoidance groove 18 and is fixedly connected to a handwheel block 19 to prevent the rotating rod 6 from rotating due to accidental contact with the handwheel block 19.

[0030] As a preferred method, Figure 3 As shown, a through hole communicating with the mounting groove 3 is provided on the side wall of the cavity 5 , and the clamping block 12 is arranged through the through hole to facilitate the displacement of the clamping block 12 .

[0031] As a preferred method, Figure 2 As shown, the front cross-section of the threshold member 2 is arranged in a concave structure, and two slots 4 are respectively arranged at the two ends of the threshold member 2, and the locking connection is firm.

[0032] As a preferred method, Figure 1 As shown, the upper side wall of the threshold member 2 is fixedly connected with two anti-slip strips 20 arranged at equal intervals to improve the anti-slip property.

Claims

1. A fixed door threshold assembly, characterized in that: include: A buried foundation strip (1) and a threshold member (2), wherein a mounting groove (3) is provided on the upper side of the buried foundation strip (1), the threshold member (2) is placed in the mounting groove (3), an elastic pressure relief mechanism is fixedly connected to the inner bottom wall of the mounting groove (3), the upper end of the elastic pressure relief mechanism is arranged to abut against the inner top wall of the threshold member (2), mounting mechanisms are provided in the side walls at both ends of the buried foundation strip (1), and slot openings (4) are provided on both sides of the threshold member (2), and one end of the two mounting mechanisms are respectively inserted into the two slot openings (4); The mounting mechanism comprises a cavity (5) formed in the side wall of the buried foundation strip (1); the inner bottom wall of the cavity (5) is rotatably connected to a rotating rod (6) via a bearing seat; the upper end of the rotating rod (6) is arranged to penetrate the upper side of the buried foundation strip (1); a circular gear (7) is fixedly connected to the rotating rod (6); one side of the circular gear (7) is meshingly connected to a rack (8); the rack (8) is a hollow structure; a positioning rod (9) is fixedly connected to the inner wall of the cavity (5); one end of the positioning rod (9) penetrates into the rack (8) and is fixedly connected to a slider (10); a reset spring (11) is fixedly connected between the slider (10) and the inner wall of the rack (8); one end of the rack (8) is fixedly connected to a clamping block (12); one end of the clamping block (12) is inserted into the clamping slot (4).

2. A fixed door threshold assembly according to claim 1, characterized in that: The elastic pressure relief mechanism comprises three sleeve rods (13) fixed at equal intervals on the inner bottom wall of the installation groove (3); the upper ends of the three sleeve rods (13) are sleeved with sleeves (14); two sides of the sleeves (14) are hingedly connected to two hydraulic rods (15) arranged obliquely and symmetrically; the inner wall of the installation groove (3) is hingedly connected to the lower end of the hydraulic rod (15); a pressure relief spring (16) is sleeved on the hydraulic rod (15); the upper ends of the three sleeves (14) are fixedly connected to support plates (17); the upper side of the support plate (17) is arranged to abut against the inner top wall of the threshold member (2).

3. A fixed door threshold assembly according to claim 2, characterized in that: The outer wall of the sleeve rod (13) is slidably connected to the inner wall of the sleeve (14).

4. A fixed door threshold assembly according to claim 1, characterized in that: One end of the rack (8) is provided with a sliding opening, and the positioning rod (9) is arranged through the sliding opening.

5. The fixed door threshold assembly according to claim 1, characterized in that: An escape groove (18) is provided on the upper side wall of the buried foundation strip (1), and the upper end of the rotating rod (6) is located in the escape groove (18) and is fixedly connected to a hand wheel block (19).

6. The fixed door threshold assembly according to claim 1, characterized in that: A through hole communicating with the mounting groove (3) is provided on the side wall of the cavity (5), and the clamping block (12) is disposed through the through hole.

7. The fixed door threshold assembly according to claim 1, characterized in that: The front view cross section of the threshold member (2) is arranged in a concave structure, and the two slot openings (4) are respectively arranged at the two ends of the threshold member (2).

8. The fixed door threshold assembly according to claim 1, characterized in that: The upper side wall of the threshold member (2) is fixedly connected to two anti-slip strips (20) arranged at equal intervals.

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