Connecting rod type side-opening access door

Abstract

The utility model relates to the technical field of concrete mixing equipment, and particularly discloses a connecting rod type side-opening access door which comprises a left access door body, a right access door body and a door frame, the left access door body is installed on a mixer cover through a side-opening connecting rod and a support, and the right access door body is installed on the mixer cover through a side-opening connecting rod and a support. The left access door body and the right access door body rotate around the support through the side-opening connecting rods and are sealed at the door frame when closed. According to the utility model, a connecting rod type lateral door opening mode is adopted, so that the effective opening size of the access hole is increased, and field equipment maintainers can conveniently enter a stirring main machine to overhaul and maintain the equipment; the unfavorable factor that the opening and closing angle of the access door is limited due to the limited space of the mixing station is effectively avoided, the risk of accidents such as collision when maintainers enter and exit from a host is reduced, and the structure is reasonable, maintenance-free, safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete mixing equipment, in particular to a connecting rod type side-opening inspection door. Background Art

[0002] A concrete mixing plant is a combined device used for centralized concrete mixing. Due to its high degree of mechanization and automation, it boasts high productivity, guaranteed concrete quality, and cement savings. It is commonly used in large and medium-sized water conservancy, power, and bridge projects, where concrete volumes are large, construction periods are long, and construction sites are concentrated. With the development of municipal construction, batching plants that utilize centralized mixing and provide commercial concrete have shown significant advantages, leading to rapid growth and creating opportunities for the promotion of concrete pumping construction and the integrated operation of mixing, conveying, and pouring machinery.

[0003] With the continuous progress and development of my country's construction industry, the footprint of concrete mixing plants is shrinking. The space utilization rate of concrete mixing equipment is constantly improving, resulting in limited internal space in the mixing plant. Maintenance of the concrete mixer requires access to the main unit tank through the side access door on the top cover of the main unit. Traditional flip-up access doors, due to space limitations in the mixing plant, have a narrow opening angle, making it difficult for personnel to enter and exit, or for material transfer.

[0004] Therefore, there is an urgent need to design a connecting rod type side opening inspection door to solve the problem of limited space in existing concrete mixing plants and inconvenience for maintenance personnel in entering and exiting the mixing main unit. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the present utility model is to provide a connecting rod type side-opening inspection door.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a connecting rod type side-opening inspection door, including a left inspection door body, a right inspection door body and a door frame, the left inspection door body is installed on the mixer cover through a side-opening connecting rod and a support, the right inspection door body is installed on the mixer cover through a side-opening connecting rod and a support, the left inspection door body and the right inspection door body are both rotated around the support through the side-opening connecting rod, and the left inspection door body and the right inspection door body are sealed at the door frame when closed.

[0007] Specifically, a limit switch pressure plate is fixed on the door body of the left inspection door. When the door body of the left inspection door is closed, the limit switch pressure plate presses and triggers the limit switch, and the limit switch is installed on the mixer cover.

[0008] Specifically, the left inspection door body and the right inspection door body are both provided with locking plates, and a "U"-shaped groove is provided on the outside of the locking plate. A screw is inserted into the "U"-shaped groove of the locking plate, and the bottom of the screw is fixed on the mixer cover. The locking plate is fixed by a nut on the screw. The locking plate and the screw cooperate to form a locking device for the left inspection door body and the right inspection door body.

[0009] Specifically, sealing strips are provided on the outer peripheries of the left inspection door body and the right inspection door body. After the left inspection door body and the right inspection door body are closed, they are combined with the door frame to form a sealing structure.

[0010] Specifically, the support is fixed to the mixer cover by bolts or welding.

[0011] Specifically, the left inspection door body and the right inspection door body are movably connected to the side-opening connecting rod through a pin shaft or a bearing, and the side-opening connecting rod is movably connected to the support through a pin shaft or a bearing.

[0012] Specifically, an overlapping plate is provided on the inner side of the right inspection door body, and a groove is provided on the inner side of the left inspection door body, in which the overlapping plate is adapted to be inserted. Sealing strips are provided on the edges of the overlapping plate and the groove, and the overlapping plate and the groove form an overlapping sealing structure of the left inspection door body and the right inspection door body.

[0013] The utility model has the following beneficial effects:

[0014] The connecting rod side-opening inspection door designed by the utility model adopts the connecting rod side-opening method as a whole, which increases the effective opening size of the inspection port, making it convenient for on-site equipment maintenance personnel to enter the mixing host to inspect and maintain the equipment more conveniently. The inspection door body opens to the left and right sides respectively, which effectively avoids the unfavorable factor of the limited opening and closing angle of the inspection door due to the limited space of the mixing station, and reduces the risk of accidents such as bumps and other accidents when maintenance personnel enter and exit the host.

[0015] The connecting rod type side opening inspection door designed by the utility model has a reasonable structure, is maintenance-free, safe and reliable, and effectively solves the disadvantage of the traditional upper lift type inspection door having a small opening and closing angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the connecting rod type side opening inspection door in the closed state.

[0017] Figure 2 It is a structural diagram of the connecting rod type side opening inspection door when it is in the open state.

[0018] Figure 3 It is a structural diagram of a connecting rod type side-opening inspection door.

[0019] In the figure: 1-left inspection door body; 2-right inspection door body; 3-side opening connecting rod; 4-support; 5-door frame; 6-overlapping plate; 7-limit switch pressure plate; 8-limit switch; 9-mixer cover; 10-locking plate; 11-screw. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely further describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 3 As shown, a connecting rod type side-opening inspection door includes a left inspection door body 1, a right inspection door body 2, a side-opening connecting rod 3, a support 4, a door frame 5, a limit switch 8 and a locking plate 10. The left inspection door body 1 is installed on the mixer cover 9 through the side-opening connecting rod 3 and the support 4, and the right inspection door body 2 is installed on the mixer cover 9 through the side-opening connecting rod 3 and the support 4. The left inspection door body 1 and the right inspection door body 2 both rotate around the support 4 through the side-opening connecting rod 3. When the left inspection door body 1 and the right inspection door body 2 are closed, they are sealed at the door frame 5.

[0022] A limit switch pressure plate 7 is fixed on the left inspection door body 1. When the left inspection door body 1 is closed, the limit switch pressure plate 7 presses and triggers the limit switch 8. The limit switch 8 is installed on the mixer cover 9 to detect whether the inspection door is closed.

[0023] Two locking plates 10 are provided on the left inspection door body 1 and the right inspection door body 2. A "U"-shaped groove is provided on the outer side of the locking plate 10. A screw 11 is inserted into the "U"-shaped groove of the locking plate 10. The bottom of the screw 11 is fixed on the mixer cover 9. The screw 11 is threaded with a nut to fix the locking plate 10. The locking plate 10 and the screw 11 cooperate to form a locking device for the left inspection door body 1 and the right inspection door body 2.

[0024] Sealing strips are provided on the outer peripheries of the left inspection door body 1 and the right inspection door body 2. When the left inspection door body 1 and the right inspection door body 2 are closed, they are combined with the door frame 5 to form a sealing structure.

[0025] The support 4 is fixed on the mixer cover 9 by bolts or welding. The left inspection door body 1 and the right inspection door body 2 are movably connected to the side opening connecting rod 3 through a pin shaft or a bearing, and the side opening connecting rod 3 is movably connected to the support 4 through a pin shaft or a bearing.

[0026] An overlapping plate 6 is provided on the inner side of the right inspection door body 2, and a groove is provided on the inner side of the left inspection door body 1, in which the overlapping plate 6 is adapted to be inserted. Sealing strips are provided on the edges of the overlapping plate 6 and the groove. The overlapping plate 6 and the groove form an overlapping sealing structure of the left inspection door body 1 and the right inspection door body 2.

[0027] The implementation process of this utility model:

[0028] The support 4 is fixedly mounted around the inspection opening of the mixer cover 9. One end of the side-opening connecting rod 3 is connected to the support 4, and the other end is connected to the left inspection door body 1 and the right inspection door body 2. Both ends can rotate. When in use, the unlocking locking device is released and the left inspection door body 1 and the right inspection door body 2 are pulled to the left and right respectively. The left inspection door body 1 and the right inspection door body 2 rotate around the support 4 under the action of the side-opening connecting rod 3 and move laterally to the left or right, thereby exposing the inspection opening. When closing the door, the side-opening connecting rod 3 is pulled in the opposite direction. The inspection door moves toward the center of the inspection opening and covers the inspection opening, sealing the inspection opening. The sealing strip is pressed against the door frame 5 by the locking device to form a seal. At the same time, the limit switch pressure plate 7 presses the limit switch 8.

[0029] The limit switch pressing plate 7 is welded to the side of the left inspection door body 1. When the left inspection door body 1 covers the inspection port, the limit switch pressing plate 7 just presses the limit switch 8 to detect whether the inspection door is closed.

[0030] The locking devices are arranged on the upper and lower sides of the left inspection door body 1 and the right inspection door body 2. The mixer cover 9 is provided with a screw 11 matching the locking plate 10. The inspection port is closed and the locking device is used to lock the door body.

[0031] The present invention is not limited to the above-mentioned embodiments. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the scope of protection of the present invention.

[0032] The technology, shape and structure that are not described in detail in this utility model are all well-known technologies.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connecting rod type side opening inspection door, characterized in that: It includes a left inspection door body, a right inspection door body and a door frame. The left inspection door body is installed on the mixer cover through a side-opening connecting rod and a support. The right inspection door body is installed on the mixer cover through a side-opening connecting rod and a support. Both the left inspection door body and the right inspection door body rotate around the support through the side-opening connecting rod. When the left inspection door body and the right inspection door body are closed, they are sealed at the door frame.

2. The connecting rod type side opening inspection door according to claim 1, characterized in that: A limit switch pressing plate is fixed on the door body of the left inspection door. When the door body of the left inspection door is closed, the limit switch pressing plate presses and triggers the limit switch, which is installed on the mixer cover.

3. The connecting rod type side opening inspection door according to claim 1, characterized in that: The left inspection door body and the right inspection door body are both provided with locking plates, and a "U"-shaped groove is provided on the outer side of the locking plate. A screw is inserted into the "U"-shaped groove of the locking plate, and the bottom of the screw is fixed on the mixer cover. The screw is threaded with a nut to fix the locking plate. The locking plate and the screw cooperate to form a locking device for the left inspection door body and the right inspection door body.

4. The connecting rod type side opening inspection door according to claim 1, characterized in that: The outer peripheries of the left inspection door body and the right inspection door body are provided with sealing strips, and after the left inspection door body and the right inspection door body are closed, they are combined with the door frame to form a sealing structure.

5. The connecting rod type side opening inspection door according to claim 1, characterized in that: The support is fixed on the mixer cover by bolts or welding.

6. The connecting rod type side opening inspection door according to claim 5, characterized in that: The left inspection door body and the right inspection door body are movably connected to the side opening connecting rod through a pin shaft or a bearing, and the side opening connecting rod is movably connected to the support through a pin shaft or a bearing.

7. The connecting rod type side opening inspection door according to claim 1, characterized in that: The inner side of the right inspection door body is provided with an overlapping plate, and the inner side of the left inspection door body is provided with a groove, in which the overlapping plate is adapted to be inserted. The edges of the overlapping plate and the groove are provided with sealing strips. The overlapping plate and the groove form an overlapping sealing structure of the left inspection door body and the right inspection door body.

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