Negative pressure type trailer toilet

Abstract

The utility model discloses a negative pressure type trailer toilet which comprises a trailer chassis, a towing hook is installed at the front end of the trailer chassis, two wheels are installed at the bottom of the trailer chassis through a suspension, a toilet body is fixedly installed at the top of the trailer chassis, and a negative pressure toilet stool, a hand washing sink and an illuminating lamp are installed in the toilet body. Mounting grooves are formed in the positions, corresponding to a door plate of the toilet body, of the side wall of the trailer chassis, and folding stairs driven by electric cylinders are installed in the mounting grooves. According to the utility model, the motor is started to drive each nut to rotate, so that the nuts are matched with the screw to drive the screw to move downwards, the supporting plate is in contact with the ground, the trailer chassis is jacked up, and the wheels are separated from the ground, so that the stability of the trailer bottom plate and the toilet main body can be ensured, and a user is prevented from shaking when going up and down the toilet; and the electric cylinders are started to drive the folding stairs to extend out of the corresponding mounting grooves, so that a user can conveniently enter and exit the toilet main body, and the use experience is better.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile toilets, in particular to a negative pressure trailer toilet. Background Art

[0002] In daily life, toilets are indispensable, but in many public places without fixed toilets, mobile toilets become the best choice. For public places with fixed toilets, when the flow of people is large, the fixed toilets in the place are often overcrowded, and mobile toilets can be a useful supplement. At present, mobile toilets are divided into powered mobile toilets and non-powered mobile toilets, among which non-powered mobile toilets are mostly trailer-type toilets.

[0003] After searching, the patent with announcement number CN216167139U discloses a water-free environmentally friendly public toilet, which facilitates the movement of the public toilet through a trailer frame, a first pulley and a second pulley structure. It is not limited to a fixed installation in a certain place, and facilitates the flexible use of public toilets in scenic spots and commercial areas.

[0004] However, in actual use, the above solution directly contacts the ground through the wheels, which has poor stability, and the toilet body and the trailer frame are prone to shaking when the user goes in and out of the toilet. In addition, although pedals are provided in this solution to facilitate users to go in and out of the toilet, the trailer frame itself is relatively high, resulting in a large span of a single pedal, which is difficult for children and the elderly to use, and needs to be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a negative pressure trailer toilet to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A negative pressure trailer toilet comprises a trailer chassis, a towing hook is installed at the front end of the trailer chassis, two wheels are installed at the bottom of the trailer chassis through a suspension, a toilet body is fixedly installed on the top of the trailer chassis, a negative pressure toilet, a washbasin and a lighting lamp are installed in the toilet body, mounting grooves are provided at the corresponding positions of the side walls of the trailer chassis and the door panels of the toilet body, folding stairs driven by an electric cylinder are installed in the mounting grooves, and the folding stairs are composed of a plurality of pedals and connecting rods, screws are penetrated near the four corners of the bottom of the trailer chassis, the bottom ends of the screws are rotatably connected to support plates, the outer wall of the screw located in the trailer chassis is fitted with a nut, the nut is rotatably connected to the inner wall of the trailer chassis through a bearing seat, a motor is fixedly installed at the bottom of the trailer chassis, and the nut is drivingly connected to the output shaft of the motor.

[0008] As a further solution of the utility model: the pedal includes a first pedal, a second pedal, a third pedal and a fourth pedal arranged in sequence from top to bottom, the connecting rod includes two first connecting rods, two second connecting rods, two third connecting rods and two fourth connecting rods symmetrically distributed on both sides of the first pedal, the two ends of the first connecting rod are rotatably connected to the first pedal and the second pedal respectively, the second connecting rod is rotatably connected to the first pedal, the second pedal and the third pedal respectively, the third connecting rod is rotatably connected to the second pedal, the third pedal and the fourth pedal respectively, the two ends of the fourth connecting rod are rotatably connected to the third pedal and the fourth pedal respectively, and the first pedal is fixedly installed in the corresponding mounting groove.

[0009] As a further solution of the utility model: two electric cylinders are installed in the installation grooves, the push rod ends of the electric cylinders are hinged to the corresponding first connecting rods, and the other ends of the electric cylinders are hinged to the inner wall of the installation grooves.

[0010] As a further solution of the utility model: the bottom of the nut is fixedly connected to the first sprocket, the output shaft of the motor is fixedly connected to the second sprocket after passing through the trailer chassis, multiple first sprockets are transmission connected to the second sprocket through the same chain, and multiple auxiliary sprockets are rotatably installed in the trailer chassis, and the chain passes around each auxiliary sprocket.

[0011] As a further solution of the utility model: a sleeve is fixedly connected to the top of the trailer chassis and the corresponding position of each screw rod, a slider is slidably connected in the sleeve, and the top end of the screw rod is fixedly connected to the slider after passing through the sleeve.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, the motor is started to drive each nut to rotate, so that the screw is driven to move downward by the cooperation between the nut and the screw, so that the support plate is in contact with the ground, and the trailer chassis is lifted up to separate the wheels from the ground, thereby ensuring the stability of the trailer bottom plate and the toilet body, avoiding shaking when the user goes in and out of the toilet, and starting the electric cylinder to drive the folding stairs to extend out of the corresponding installation groove, so that the user can conveniently enter and exit the toilet body, and the user experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a negative pressure trailer toilet.

[0015] Figure 2 This is a schematic diagram of the structure of the folding stairs in the negative pressure trailer toilet.

[0016] Figure 3 for Figure 1 A partial cross-sectional view of .

[0017] Figure 4 This is a schematic diagram of the distribution structure of the first sprocket in a negative pressure trailer toilet.

[0018] Among them, trailer chassis 1, towing hook 2, wheel 3, toilet body 4, mounting groove 5, folding stairs 6, first pedal 7, second pedal 8, third pedal 9, fourth pedal 10, first connecting rod 11, second connecting rod 12, third connecting rod 13, fourth connecting rod 14, electric cylinder 15, sleeve 16, slider 17, screw 18, support plate 19, nut 20, first sprocket 21, motor 22, second sprocket 23, auxiliary sprocket 24, switch 25. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention will be further described in detail in conjunction with the embodiments below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0021] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation in the specification, and therefore cannot be understood as a limitation on the present invention.

[0022] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0023] See also Figures 1 to 4In the embodiment of the utility model, the negative pressure trailer toilet comprises a trailer chassis 1, a towing hook 2 is installed at the front end of the trailer chassis 1, two wheels 3 are installed at the bottom of the trailer chassis 1 through a suspension, a toilet body 4 is fixedly installed on the top of the trailer chassis 1, and a negative pressure toilet, a wash basin and a lighting lamp are installed in the toilet body 4. The negative pressure toilet is a toilet commonly used in trailer toilets and other mobile toilets. It uses a vacuum feces collection system and can use the negative pressure generated by the vacuum pump to suck feces into the feces collection box during flushing, thereby reducing the use of flushing water, so as to achieve the effect of saving water and reducing the vehicle load. The side wall of the trailer chassis 1 corresponds to the door panel of the toilet body 4. A mounting groove 5 is provided at each location, and a folding staircase 6 driven by an electric cylinder 15 is installed in each mounting groove 5, and the folding staircase 6 is composed of a plurality of pedals and a connecting rod. A screw rod 18 is provided at the bottom of the trailer chassis 1 near the four corners, and a support plate 19 is rotatably connected to the bottom end of the screw rod 18. A nut 20 is sleeved on the outer wall of the screw rod 18 located in the trailer chassis 1, and the nut 20 is rotatably connected to the inner wall of the trailer chassis 1 through a bearing seat. A motor 22 is fixedly installed at the bottom of the trailer chassis 1, and the nut 20 is drivingly connected to the output shaft of the motor 22. A switch 25 for controlling the electric cylinder 15 and the motor 22 is installed on the side wall of the toilet body 4.

[0024] By adopting the above scheme, when in use, the utility model uses a towing vehicle to tow the trailer chassis 1 to the target position, separates the towing hook 2 from the towing vehicle, and then starts the motor 22 to drive each nut 22 to rotate, so that the screw 18 is driven to move downward by the cooperation between the nut 20 and the screw 18, so that the support plate 19 contacts the ground, and lifts up the trailer chassis 1 to separate the wheel 3 from the ground, thereby ensuring the stability of the trailer bottom plate 1 and the toilet body 4, avoiding shaking when the user goes up and down the toilet, and by starting the electric cylinder 15 to drive the folding ladder 6 to extend out of the corresponding installation groove 5, it is convenient for the user to enter and exit the toilet body 4, and the user experience is better.

[0025] Specific combination Figure 1 and Figure 2In one embodiment of the utility model, the pedal includes a first pedal 7, a second pedal 8, a third pedal 9 and a fourth pedal 10 arranged in sequence from top to bottom, and the connecting rod includes two first connecting rods 11, two second connecting rods 12, two third connecting rods 13 and two fourth connecting rods 14 symmetrically distributed on both sides of the first pedal 7, the two ends of the first connecting rod 11 are rotatably connected to the first pedal 7 and the second pedal 8 respectively, the second connecting rod 12 is rotatably connected to the first pedal 7, the second pedal 8 and the third pedal 9 respectively, the third connecting rod 13 is rotatably connected to the second pedal 8, the third pedal 9 and the fourth pedal 10 respectively, the two ends of the fourth connecting rod 14 are rotatably connected to the third pedal 9 and the fourth pedal 10 respectively, and the first pedal 7 is fixedly installed in the corresponding mounting groove 5.

[0026] Furthermore, two electric cylinders 15 are installed in each of the installation slots 5 , a push rod end of the electric cylinder 15 is hinged to the corresponding first connecting rod 11 , and the other end of the electric cylinder 15 is hinged to the inner wall of the installation slot 5 .

[0027] The first connecting rod 11 is driven to move by the electric cylinder 15, and the first pedal 7, the second pedal 8, the third pedal 9 and the fourth pedal 10 can be used in coordination with the first connecting rod 11, the second connecting rod 12, the third connecting rod 13 and the fourth connecting rod 14 to extend the second pedal 8, the third pedal 9 and the fourth pedal 10 to the outside of the mounting groove 5 and form a step with a smaller span for convenience of use by children and the elderly.

[0028] Specific combination Figure 1 , Figure 3 and Figure 4 In one embodiment of the utility model, the bottom of the nut 20 is fixedly connected to the first sprocket 21, and the output shaft of the motor 22 is fixedly connected to the second sprocket 23 after passing through the trailer chassis 1. Multiple first sprockets 21 are transmission connected to the second sprocket 23 through the same chain. Multiple auxiliary sprockets 24 are rotatably installed in the trailer chassis 1, and the chain is passed around each auxiliary sprocket 24.

[0029] By starting the motor 22, the second sprocket 23 can be driven to rotate, thereby utilizing the chain to drive each first sprocket 21 to rotate. Through the practical use of multiple auxiliary sprockets 24, the chain can be guided so that the chain's wrap angle with each sprocket is greater than 120°, thereby ensuring the stability of the chain and sprocket cooperation.

[0030] Specific combination Figure 3 In one embodiment of the utility model, a square tube-shaped sleeve 16 is fixedly connected to the top of the trailer chassis 1 and the corresponding position of each screw rod 18, a rectangular slider 17 is slidably connected in the sleeve 16, and the top end of the screw rod 18 is fixedly connected to the slider 17 after passing through the sleeve 16.

[0031] The cooperation between the sleeve 16 and the slider 17 can guide the screw 18, thereby improving the stability of the screw 18 moving up and down, and the cooperation between the square tube-shaped sleeve 16 and the rectangular slider 17 can prevent the screw 18 and the water nut 20 from rotating.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. Negative pressure trailer toilet, characterized by: The trailer chassis (1) comprises a trailer hook (2) installed at the front end of the trailer chassis (1), two wheels (3) installed at the bottom of the trailer chassis (1) via a suspension, a toilet body (4) fixedly installed at the top of the trailer chassis (1), a negative pressure toilet, a wash basin and a lighting lamp installed in the toilet body (4), and mounting grooves (5) are provided at the corresponding positions of the side wall of the trailer chassis (1) and the door panel of the toilet body (4), and a folding staircase (6) driven by an electric cylinder (15) is installed in the mounting groove (5), and the folding staircase (6) driven by an electric cylinder (15) is installed in the mounting groove (5). The stacked stairs (6) are composed of a plurality of pedals and connecting rods. The bottom of the trailer chassis (1) is provided with screw rods (18) near the four corners. The bottom ends of the screw rods (18) are rotatably connected to support plates (19). The outer wall of the screw rods (18) located inside the trailer chassis (1) is fitted with a nut (20). The nut (20) is rotatably connected to the inner wall of the trailer chassis (1) through a bearing seat. A motor (22) is fixedly installed at the bottom of the trailer chassis (1), and the nuts (20) are drivingly connected to the output shaft of the motor (22).

2. The negative pressure trailer toilet according to claim 1, characterized in that: The pedal comprises a first pedal (7), a second pedal (8), a third pedal (9) and a fourth pedal (10) arranged in sequence from top to bottom; the connecting rod comprises two first connecting rods (11), two second connecting rods (12), two third connecting rods (13) and two fourth connecting rods (14) symmetrically distributed on both sides of the first pedal (7); the two ends of the first connecting rod (11) are rotatably connected to the first pedal (7) and the second pedal (8); the second connecting rod (12) is rotatably connected to the first pedal (7), the second pedal (8) and the third pedal (9); the third connecting rod (13) is rotatably connected to the second pedal (8), the third pedal (9) and the fourth pedal (10); the two ends of the fourth connecting rod (14) are rotatably connected to the third pedal (9) and the fourth pedal (10); the first pedal (7) is fixedly mounted in the corresponding mounting groove (5).

3. The negative pressure trailer toilet according to claim 2, characterized in that: Two electric cylinders (15) are installed in each of the installation grooves (5); the push rod ends of the electric cylinders (15) are hinged to the corresponding first connecting rods (11), and the other ends of the electric cylinders (15) are hinged to the inner wall of the installation groove (5).

4. The negative pressure trailer toilet according to claim 1, characterized in that: The bottom of each nut (20) is fixedly connected to a first sprocket (21); the output shaft of the motor (22) is inserted into the trailer chassis (1) and fixedly connected to a second sprocket (23); a plurality of the first sprockets (21) are transmission-connected to the second sprocket (23) via a same chain; a plurality of auxiliary sprockets (24) are rotatably mounted in the trailer chassis (1); the chain passes around each auxiliary sprocket (24).

5. The negative pressure trailer toilet according to claim 4, characterized in that: A sleeve (16) is fixedly connected to the top of the trailer chassis (1) and the corresponding position of each screw rod (18), a slider (17) is slidably connected inside the sleeve (16), and the top end of the screw rod (18) is inserted into the sleeve (16) and fixedly connected to the slider (17).

Images