Square cabin door limiting device
By designing the combined structure of upper and lower limiters, the problem of difficulty in opening and closing of the cabin door is solved, synchronous opening and closing and stability are achieved, and adapting to the needs of changing environments.
Patent Information
- Application Number
- CN202422053759.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The upper and lower limiters of the existing cabin door are not synchronized, which makes it difficult to open and close, especially in strong wind environments, which is difficult to limit the cabin door to an appropriate opening angle.
The combined structure of the upper limiter and the lower limiter is adopted. The upper limiter includes a right-angle limiting bar, an upper connecting rod, an upper hinge seat, an upper hinge pin and an upper sliding pin. The lower limiter includes a lower hinge seat, a lower connecting rod, a first and a second groove-shaped hinge seat. Through the cooperation of the sliding pin and the hinge pin, the upper and lower connecting rods can be synchronized and the stability of the opening and closing of the hatch door is ensured.
The synchronous opening and closing of the cabin door is realized, which improves the stability of opening and closing and labor-saving operation, and ensures the reliable use of the cabin door in a changing environment.
Smart Images
Figure CN223135889U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a limiting device for a door after it is opened, in particular to a device that can limit the opened square cabin door and can store the utility model after the square cabin door is closed, belonging to the technical field of special vehicle accessories. Background Art
[0002] In order to facilitate the entry and exit of personnel, equipment and instruments into and out of the square cabin, it is necessary to limit the square cabin door at the required opening angle to prevent the frame of the square cabin door from colliding with the cabin body and being damaged. The square cabin door also needs to adapt to changing climate and geographical conditions. Especially in a strong wind environment, it is very difficult to limit the square cabin door at a certain opening angle.
[0003] Currently, the limiter installed on the upper part of the square cabin door often adopts a chute connecting rod structure. One end is installed on the upper inner side of the square cabin door, and the other end is installed inside the cabin body. The opening angle range of the square cabin door is relatively large, and only the limit nut on the sliding pin needs to be tightened to lock the square cabin door. This kind of limiter is widely used in the field of special vehicles. However, if the limiter at the lower part of the square cabin door adopts the same chute connecting rod structure as the limiter at the upper part of the square cabin door, it is impossible to make the upper and lower two connecting rods completely synchronous, seriously affecting the opening and closing of the square cabin door. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a limiting device for a square cabin door with a simple structure, convenient installation and synchronous opening and closing of the upper and lower limiters.
[0005] The utility model is realized through the following technical solutions:
[0006] A limiting device for a mobile cabin door, comprising an upper limiter and a lower limiter, which are respectively arranged on the upper and lower sides of the mobile cabin door and corresponding positions of the door frame; the upper limiter includes a right-angle limiting strip with a longitudinal long groove on the upper side, an upper connecting rod, an upper hinge seat, an upper hinge pin and an upper sliding pin. The right-angle limiting strip is fixed on the upper side of the inner side of the mobile cabin door, the upper hinge seat is vertically fixed on the door frame above the right-angle limiting strip, the lower end of the upper hinge pin vertically passing through the upper hinge seat is screwed into one end of the upper connecting rod, the upper end of the upper sliding pin is screwed into the other end of the upper connecting rod, and the lower end of the upper sliding pin passes through the longitudinal long groove of the right-angle limiting strip. By means of a hand-tightening limit nut screwed on the lower end of the upper sliding pin, the upper connecting rod is slidably connected with the right-angle limiting strip; the lower limiter includes a lower hinge seat, a lower connecting rod, a first lower hinge pin, a second lower hinge pin, a first grooved hinge seat and a second grooved hinge seat. The lower hinge seat is vertically fixed on the corner near the hinge of the mobile cabin door at the lower part of the inner side of the door frame, the first grooved hinge seat is fixed on the middle part of the lower side of the inner side of the mobile cabin door, the second grooved hinge seat is fixed on the side of the lower part of the inner side of the door frame away from the door hinge. One end of the lower connecting rod is hinged to the lower hinge seat through the first lower hinge pin; when the mobile cabin door is opened, the other end of the lower connecting rod is embedded in the first grooved hinge seat, and the second lower hinge pin vertically passes through the first grooved hinge seat and the other end of the lower connecting rod; when the mobile cabin door is opened, the upper sliding pin slides to the corresponding position of the longitudinal long groove along with the mobile cabin door, and the upper connecting rod is locked by tightening the hand-tightening limit nut; when the mobile cabin door is closed, the other end of the lower connecting rod disengages from the first grooved hinge seat and horizontally moves downward to be embedded in the second grooved hinge seat, and the first lower hinge pin vertically moves downward accordingly, and the second lower hinge pin vertically passes through the second grooved hinge seat and the other end of the lower connecting rod; when the mobile cabin door is closed, the upper sliding pin slides to the corresponding position of the longitudinal long groove along with the closed mobile cabin door, and the upper connecting rod is locked by tightening the hand-tightening limit nut.
[0007] The object of the present utility model can be further achieved by the following technical measures.
[0008] Further, when the mobile cabin door is opened or closed, the upper connecting rod and the lower connecting rod are respectively parallel to the mobile cabin door.
[0009] Further, the groove widths of the first grooved hinge seat and the second grooved hinge seat are equal, and the ratio of the groove width H to the thickness B of the lower connecting rod is: H / B = 2.05 - 2.15.
[0010] Further, when the mobile cabin door is closed, the ratio of the length L1 of the first lower hinge pin shaft extending out of the lower hinge seat after moving downward to the thickness B of the lower connecting rod is: L1 / B = 3.6 - 3.8.
[0011] The upper limiter of the present utility model adopts a structure in which one end of the upper connecting rod is hinged to the upper hinge seat and the other end is hinged to the sliding groove. The lower limiter adopts a structure in which one end of the lower connecting rod is hinged to the lower hinge seat and the other end is respectively hinged to the first grooved hinge seat when the cabin door is opened and the second grooved hinge seat when the cabin door is closed. The opening angle locking of the cabin door and the storage locking of the lower connecting rod when the cabin door is closed are very convenient. The structure of the present utility model is simple, labor-saving and convenient to operate, and solves the problem of difficult opening and closing of the cabin door caused by the out-of-synchronization of the upper limiter and the lower limiter.
[0012] The advantages and features of the present utility model will be illustrated and explained by the following non-restrictive description of preferred embodiments, which are used as examples with reference to the accompanying drawings. Brief Description of the Drawings
[0013] Figure 1 is a structural diagram of the present utility model installed in the cabin with the cabin door closed;
[0014] Figure 2 is Figure 1 the top view of
[0015] Figure 3 is Figure 1 the A-A sectional view of
[0016] Figure 4 is a structural diagram of the present utility model installed in the cabin with the cabin door open;
[0017] Figure 5 is Figure 4 the top view of
[0018] Figure 6 is Figure 4 the B-B sectional view of
[0019] Figure 7 is Figure 1 the enlarged view of part Ⅰ of Detailed Description of the Preferred Embodiments
[0020] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0021] As Figures 1 to 7 shown, the present utility model includes an upper limiter 1 and a lower limiter 2, and the upper limiter 1 and the lower limiter 2 are respectively arranged at the upper and lower sides of the cabin door 10 and the corresponding positions of the door frame 20. The upper limiter 1 includes a right-angle limiting strip 11 with a longitudinal long groove 111 opened on the upper side, an upper connecting rod 12, an upper hinge seat 13, an upper hinge pin 14 and an upper sliding pin 15. The right-angle limiting strip 11 is fixed to Figure 1On the upper left side of the inner surface of the cabin door 10, the upper hinge seat 13 is vertically fixed on the door frame 20 above the right-angle limit bar 11. The lower end of the upper hinge pin 14 vertically passing through the upper hinge seat 13 is screwed into the left end of the upper connecting rod 12. The upper end of the upper sliding pin 15 is screwed into the right end of the upper connecting rod 12. The lower end of the upper sliding pin 15 passes through the longitudinal slot 111 of the right-angle limit bar 11. By means of the hand-tightening limit nut 16 screwed on the lower end of the upper sliding pin 15, the upper connecting rod 12 is slidably connected to the right-angle limit bar 11.
[0022] The lower limiter 2 includes a lower hinge seat 21, a lower connecting rod 22, a first lower hinge pin 23, a second lower hinge pin 24, a first grooved hinge seat 25 and a second grooved hinge seat 26. The lower hinge seat 21 is vertically fixed on the corner of the inner side of the lower part of the door frame 20 near the cabin door hinge 30. The first grooved hinge seat 25 is fixed on the middle part of the lower side of the inner surface of the cabin door 10. The second grooved hinge seat 26 is fixed on the left side of the inner surface of the lower part of the door frame 20 away from the door hinge 30. The left end of the lower connecting rod 22 is hinged to the lower hinge seat 21 through the first lower hinge pin 23.
[0023] When the cabin door 10 is opened, the right end of the lower connecting rod 22 is inserted into the first grooved hinge seat 25, and the second lower hinge pin 24 vertically passes through the first grooved hinge seat 25 and the right end of the lower connecting rod 22. The upper sliding pin 15 slides to the corresponding position of the longitudinal slot 111 of the right-angle limit bar 11 as the cabin door 10 is opened, and the upper connecting rod 12 is locked by the tightened hand-tightening limit nut 16. When the cabin door is closed, the right end of the lower connecting rod 22 disengages from the first grooved hinge seat 25 and horizontally moves downward and is inserted into the second grooved hinge seat 26. The first lower hinge pin 23 vertically moves downward accordingly, and the second lower hinge pin 23 vertically passes through the second grooved hinge seat 26 and the right end of the lower connecting rod 22. The upper sliding pin 15 slides to the corresponding position of the longitudinal slot 111 as the closed cabin door 10 slides, and the upper connecting rod 22 is locked by tightening the hand-tightening limit nut 16.
[0024] As Figure 2 、 Figure 3 、 Figure 5 and Figure 6 shown, when the cabin door 10 is opened or closed, the upper connecting rod 12 and the lower connecting rod 22 are respectively parallel to the cabin door 10. When the cabin door 10 is opened, the upper connecting rod 12 and the lower connecting rod 22 respectively occupy the minimum opening space, so that the access space for personnel and equipment is the largest. At the same time Figure 5 the axis of the hinge shaft 301 of the cabin door hinge 30, the upper hinge pin 14 and the upper sliding pin 15 in Figure 6 and the axis of the hinge shaft 301 of the cabin door hinge 30, the first lower hinge pin 23 and the second lower hinge pin 24 in
[0025] As Figure 7As shown, the groove width of the first grooved hinge seat 25 is equal to that of the second grooved hinge seat 26. In this embodiment, the ratio of the groove width H to the thickness B of the lower connecting rod is: H / B = 2.10, which facilitates the horizontal movement of the lower connecting rod 22 in and out of the first grooved hinge seat 25 or the second grooved hinge seat 26, thereby improving the reliability of the lower connecting rod 22 in supporting the opened shelter door 10. When the shelter door 10 is closed, it is more convenient to store the lower connecting rod 22.
[0026] The ratio of the length L1 that the first lower hinge pin 23 extends out of the lower hinge seat 21 after axially moving downward to the thickness B of the lower connecting rod 22 is: L1 / B = 3.7, which facilitates the up and down horizontal movement of the first lower hinge pin 23 with the lower connecting rod 22, and respectively inserts into the first grooved hinge seat 25 or the second grooved hinge seat 26, and respectively realizes the lower connecting rod 22 in supporting the opened shelter door 10 through the second lower hinge pin 24, or stores and locks the lower connecting rod 22 in the second grooved hinge seat 26.
[0027] Before the shelter door 10 is fully opened, first pull out the second lower hinge pin 24 in the second grooved hinge seat 26, loosen the hand-tightening limit nut 16, then move the right end of the lower connecting rod 22 out of the second grooved hinge seat 26, then push up the first lower hinge pin 23, then fully open the shelter door 10, and horizontally move the right end of the lower connecting rod 22 upward and insert it into the first grooved hinge seat 25, then sequentially pass the second lower hinge pin 24 through the first grooved hinge seat 25 and the lower connecting rod 22 to lock the lower connecting rod 22. At the same time, the upper sliding pin 15 slides to the corresponding position of the longitudinal slot 111 of the right-angle limit strip 11 with the fully opened shelter door 10, and finally tighten the hand-tightening limit nut 16 to lock the upper connecting rod 22, so that the shelter door 10 is locked in the fully opened state. When the shelter door 10 is closed, except that the right end of the lower connecting rod 22 disengages from the first grooved hinge seat 25 and then moves downward and inserts into the second grooved hinge seat 26 and is locked with the second lower hinge pin 24, the remaining operation steps are opposite to the operation steps of the shelter door 10 being fully opened as described above.
[0028] In addition to being used for the limit of the shelter door, the utility model can also be used for the limit of the building door. The lower limiter can also be installed separately at the lower part of the door and the door frame, and can also limit the opening and closing of the door.
[0029] In addition to the above embodiments, the utility model can also have other implementation manners. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the utility model.
Claims
1. A limiting device for a mobile cabin door, comprising an upper limiter and a lower limiter, wherein the upper limiter and the lower limiter are respectively arranged at the upper and lower sides of the mobile cabin door and corresponding positions of the door frame; the upper limiter includes a right-angled limiting strip with a longitudinal long groove opened on the upper side, an upper connecting rod, an upper hinge seat, an upper hinge pin and an upper sliding pin. The right-angled limiting strip is fixed on one side of the upper part of the inner side surface of the mobile cabin door, the upper hinge seat is vertically fixed on the door frame above the right-angled limiting strip, the lower end of the upper hinge pin vertically passing through the upper hinge seat is screwed into one end of the upper connecting rod, the upper end of the upper sliding pin is screwed into the other end of the upper connecting rod, the lower end of the upper sliding pin passes through the longitudinal long groove of the right-angled limiting strip, and by means of a hand-tightening limiting nut screwed on the lower end head of the upper sliding pin, the upper connecting rod is slidably connected with the right-angled limiting strip; its feature is that, The lower limiter includes a lower hinge seat, a lower connecting rod, a first lower hinge pin, a second lower hinge pin, a first grooved hinge seat and a second grooved hinge seat. The lower hinge seat is vertically fixed at the corner of the inner side of the door frame near the hinge of the shelter door at the lower part. The first grooved hinge seat is fixed at the middle part of the lower side of the inner side of the shelter door. The second grooved hinge seat is fixed on the side of the inner side of the lower part of the door frame away from the door hinge. One end of the lower connecting rod is hinged to the lower hinge seat through the first lower hinge pin. When the shelter door is opened, the other end of the lower connecting rod is embedded in the first grooved hinge seat, and the second lower hinge pin vertically passes through the first grooved hinge seat and the other end of the lower connecting rod. The upper sliding pin slides to the corresponding position of the longitudinal slot along with the opening of the shelter door, and the upper connecting rod is locked by tightening the hand-tightening limit nut. When the shelter door is closed, the other end of the lower connecting rod disengages from the first grooved hinge seat and horizontally moves downward and is embedded in the second grooved hinge seat, and the first lower hinge pin vertically moves downward accordingly, and the second lower hinge pin vertically passes through the second grooved hinge seat and the other end of the lower connecting rod. The upper sliding pin slides to the corresponding position of the longitudinal slot along with the closing of the shelter door, and the upper connecting rod is locked by tightening the hand-tightening limit nut.
2. The cabin door limiting device according to claim 1, characterized in that, When the shelter door is opened or closed, the upper connecting rod and the lower connecting rod are respectively parallel to the shelter door.
3. The cabin door limit device according to claim 1, characterized in that, The groove widths of the first grooved hinge seat and the second grooved hinge seat are equal, and the ratio of the groove width H to the thickness B of the lower connecting rod is: H / B = 2.05 - 2.
15.
4. The cabin door limiting device according to claim 1, characterized in that, When the shelter door is closed, the ratio of the length L1 that the first lower hinge pin shaft extends downward from the lower hinge seat to the thickness B of the lower connecting rod is: L1 / B = 3.6 - 3.8.